[third-party] Update pexpect to 4.6.

Reviewers: labath, jdevlieghere

Subscribers: lldb-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59159

llvm-svn: 355967

136 files changed, 17049 insertions, 0 deletions

diff --git a/lldb/third_party/Python/module/pexpect-4.6/.gitignore b/lldb/third_party/Python/module/pexpect-4.6/.gitignore
new file mode 100644
index 00000000000..22cd4785f71
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/.gitignore
@@ -0,0 +1,11 @@
+*.pyc
+doc/_build
+tests/log
+build/
+dist/
+MANIFEST
+*~
+.coverage*
+htmlcov
+*.egg-info/
+.cache/
diff --git a/lldb/third_party/Python/module/pexpect-4.6/.travis.yml b/lldb/third_party/Python/module/pexpect-4.6/.travis.yml
new file mode 100644
index 00000000000..40d96229501
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/.travis.yml
@@ -0,0 +1,31 @@
+language: python
+
+python:
+  - 2.7
+  - 3.3
+  - 3.4
+  - 3.5
+  - 3.6
+  - pypy
+  - nightly
+
+matrix:
+  allow_failures:
+    # PyPy on Travis is currently incompatible with Cryptography.
+    - python: pypy
+
+install:
+  - export PYTHONIOENCODING=UTF8
+  - pip install coveralls pytest-cov ptyprocess
+
+script:
+    - ./tools/display-sighandlers.py
+    - ./tools/display-terminalinfo.py
+    - py.test --cov pexpect --cov-config .coveragerc
+
+after_success:
+  - coverage combine
+  - coveralls
+
+# Use new Travis stack, should be faster
+sudo: false
diff --git a/lldb/third_party/Python/module/pexpect-4.6/DEVELOPERS.rst b/lldb/third_party/Python/module/pexpect-4.6/DEVELOPERS.rst
new file mode 100644
index 00000000000..bf2bb9f30f8
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/DEVELOPERS.rst
@@ -0,0 +1,12 @@
+To run the tests, use `py.test <http://pytest.org/latest/>`_::
+
+    py.test tests
+
+The tests are all located in the tests/ directory. To add a new unit
+test all you have to do is create the file in the tests/ directory with a
+filename in this format::
+
+    test_*.py
+
+New test case classes may wish to inherit from ``PexpectTestCase.PexpectTestCase``
+in the tests directory, which sets up some convenient functionality.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/LICENSE b/lldb/third_party/Python/module/pexpect-4.6/LICENSE
new file mode 100644
index 00000000000..754db5afcb8
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/LICENSE
@@ -0,0 +1,20 @@
+ISC LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2013-2014, Pexpect development team
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+    
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/MANIFEST.in b/lldb/third_party/Python/module/pexpect-4.6/MANIFEST.in
new file mode 100644
index 00000000000..32c72ba1712
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/MANIFEST.in
@@ -0,0 +1,6 @@
+recursive-include doc *
+prune doc/_build
+recursive-include examples *
+include .coveragerc README.rst LICENSE pexpect/bashrc.sh
+recursive-include tests *
+global-exclude __pycache__ *.pyc *~
diff --git a/lldb/third_party/Python/module/pexpect-4.6/README.rst b/lldb/third_party/Python/module/pexpect-4.6/README.rst
new file mode 100644
index 00000000000..0f5cb98ceb9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/README.rst
@@ -0,0 +1,55 @@
+.. image:: https://travis-ci.org/pexpect/pexpect.svg?branch=master
+   :target: https://travis-ci.org/pexpect/pexpect
+   :align: right
+   :alt: Build status
+
+Pexpect is a Pure Python Expect-like module
+
+Pexpect makes Python a better tool for controlling other applications.
+
+Pexpect is a pure Python module for spawning child applications; controlling
+them; and responding to expected patterns in their output. Pexpect works like
+Don Libes' Expect. Pexpect allows your script to spawn a child application and
+control it as if a human were typing commands.
+
+Pexpect can be used for automating interactive applications such as ssh, ftp,
+passwd, telnet, etc. It can be used to a automate setup scripts for duplicating
+software package installations on different servers. It can be used for
+automated software testing. Pexpect is in the spirit of Don Libes' Expect, but
+Pexpect is pure Python.
+
+The main features of Pexpect require the pty module in the Python standard
+library, which is only available on Unix-like systems. Some features—waiting
+for patterns from file descriptors or subprocesses—are also available on
+Windows.
+
+If you want to work with the development version of the source code then please
+read the DEVELOPERS.rst document in the root of the source code tree.
+
+Free, open source, and all that good stuff.
+
+You can install Pexpect using pip::
+
+    pip install pexpect
+
+`Docs on ReadTheDocs <https://pexpect.readthedocs.io/>`_
+
+PEXPECT LICENSE::
+
+    http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2013-2016, Pexpect development team
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+This license is approved by the OSI and FSF as GPL-compatible.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/FAQ.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/FAQ.rst
new file mode 100644
index 00000000000..1964b12002a
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/FAQ.rst
@@ -0,0 +1,145 @@
+FAQ
+===
+
+**Q: Where can I get help with pexpect?  Is there a mailing list?**
+
+A: You can use the `pexpect tag on Stackoverflow <http://stackoverflow.com/questions/tagged/pexpect>`__
+to ask questions specifically related to Pexpect. For more general Python
+support, there's the python-list_ mailing list, and the `#python`_
+IRC channel.  Please refrain from using github for general
+python or systems scripting support.
+
+.. _python-list: https://mail.python.org/mailman/listinfo/python-list
+.. _#python: https://www.python.org/community/irc/
+
+**Q: Why don't shell pipe and redirect (| and >) work when I spawn a command?**
+
+A: Remember that Pexpect does NOT interpret shell meta characters such as
+redirect, pipe, or wild cards (``>``, ``|``, or ``*``). That's done by a shell not
+the command you are spawning. This is a common mistake. If you want to run a
+command and pipe it through another command then you must also start a shell.
+For example::
+
+    child = pexpect.spawn('/bin/bash -c "ls -l | grep LOG > log_list.txt"')
+    child.expect(pexpect.EOF)
+
+The second form of spawn (where you pass a list of arguments) is useful in
+situations where you wish to spawn a command and pass it its own argument list.
+This can make syntax more clear. For example, the following is equivalent to the
+previous example::
+
+    shell_cmd = 'ls -l | grep LOG > log_list.txt'
+    child = pexpect.spawn('/bin/bash', ['-c', shell_cmd])
+    child.expect(pexpect.EOF)
+
+**Q: The `before` and `after` properties sound weird.**
+
+A: This is how the -B and -A options in grep works, so that made it
+easier for me to remember. Whatever makes my life easier is what's best.
+Originally I was going to model Pexpect after Expect, but then I found
+that I didn't actually like the way Expect did some things. It was more
+confusing. The `after` property can be a little confusing at first,
+because it will actually include the matched string. The `after` means
+after the point of match, not after the matched string.
+
+**Q: Why not just use Expect?**
+
+A: I love it. It's great. I has bailed me out of some real jams, but I
+wanted something that would do 90% of what I need from Expect; be 10% of
+the size; and allow me to write my code in Python instead of TCL.
+Pexpect is not nearly as big as Expect, but Pexpect does everything I
+have ever used Expect for.
+
+.. _whynotpipe:
+
+**Q: Why not just use a pipe (popen())?**
+
+A: A pipe works fine for getting the output to non-interactive programs.
+If you just want to get the output from ls, uname, or ping then this
+works. Pipes do not work very well for interactive programs and pipes
+will almost certainly fail for most applications that ask for passwords
+such as telnet, ftp, or ssh.
+
+There are two reasons for this.
+
+* First an application may bypass stdout and print directly to its
+  controlling TTY. Something like SSH will do this when it asks you for
+  a password. This is why you cannot redirect the password prompt because
+  it does not go through stdout or stderr.
+
+* The second reason is because most applications are built using the C
+  Standard IO Library (anything that uses ``#include <stdio.h>``). One
+  of the features of the stdio library is that it buffers all input and
+  output. Normally output is line buffered when a program is printing to
+  a TTY (your terminal screen). Everytime the program prints a line-feed
+  the currently buffered data will get printed to your screen. The
+  problem comes when you connect a pipe. The stdio library is smart and
+  can tell that it is printing to a pipe instead of a TTY. In that case
+  it switches from line buffer mode to block buffered. In this mode the
+  currently buffered data is flushed when the buffer is full. This
+  causes most interactive programs to deadlock. Block buffering is more
+  efficient when writing to disks and pipes. Take the situation where a
+  program prints a message ``"Enter your user name:\n"`` and then waits
+  for you type type something. In block buffered mode, the stdio library
+  will not put the message into the pipe even though a linefeed is
+  printed. The result is that you never receive the message, yet the
+  child application will sit and wait for you to type a response. Don't
+  confuse the stdio lib's buffer with the pipe's buffer. The pipe buffer
+  is another area that can cause problems. You could flush the input
+  side of a pipe, whereas you have no control over the stdio library buffer.
+
+More information: the Standard IO library has three states for a
+``FILE *``. These are: _IOFBF for block buffered; _IOLBF for line buffered;
+and _IONBF for unbuffered. The STDIO lib will use block buffering when
+talking to a block file descriptor such as a pipe. This is usually not
+helpful for interactive programs. Short of recompiling your program to
+include fflush() everywhere or recompiling a custom stdio library there
+is not much a controlling application can do about this if talking over
+a pipe.
+
+The program may have put data in its output that remains unflushed
+because the output buffer is not full; then the program will go and
+deadlock while waiting for input -- because you never send it any
+because you are still waiting for its output (still stuck in the STDIO's
+output buffer).
+
+The answer is to use a pseudo-tty. A TTY device will force line
+buffering (as opposed to block buffering). Line buffering means that you
+will get each line when the child program sends a line feed. This
+corresponds to the way most interactive programs operate -- send a line
+of output then wait for a line of input.
+
+I put "answer" in quotes because it's ugly solution and because there is
+no POSIX standard for pseudo-TTY devices (even though they have a TTY
+standard...). What would make more sense to me would be to have some way
+to set a mode on a file descriptor so that it will tell the STDIO to be
+line-buffered. I have investigated, and I don't think there is a way to
+set the buffered state of a child process. The STDIO Library does not
+maintain any external state in the kernel or whatnot, so I don't think
+there is any way for you to alter it. I'm not quite sure how this
+line-buffered/block-buffered state change happens internally in the
+STDIO library. I think the STDIO lib looks at the file descriptor and
+decides to change behavior based on whether it's a TTY or a block file
+(see isatty()).
+
+I hope that this qualifies as helpful. Don't use a pipe to control
+another application.
+
+**Q: Can I do screen scraping with this thing?**
+
+A: That depends. If your application just does line-oriented output then
+this is easy. If a program emits many terminal sequences, from video
+attributes to screen addressing, such as programs using curses, then
+it may become very difficult to ascertain what text is displayed on a screen.
+
+We suggest using the `pyte <https://github.com/selectel/pyte>`_ library to
+screen-scrape.  The module :mod:`pexpect.ANSI` released with previous versions
+of pexpect is now marked deprecated and may be removed in the future.
+
+**Q: I get strange behavior with pexect and gevent**
+
+A: Pexpect uses fork(2), exec(2), select(2), waitpid(2), and implements its
+own selector in expect family of calls. pexpect has been known to misbehave
+when paired with gevent.  A solution might be to isolate your pexpect
+dependent code from any frameworks that manipulate event selection behavior
+by running it in an another process entirely.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/Makefile b/lldb/third_party/Python/module/pexpect-4.6/doc/Makefile
new file mode 100644
index 00000000000..ced8a685263
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/Makefile
@@ -0,0 +1,153 @@
+# Makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line.
+SPHINXOPTS    =
+SPHINXBUILD   = sphinx-build
+PAPER         =
+BUILDDIR      = _build
+
+# Internal variables.
+PAPEROPT_a4     = -D latex_paper_size=a4
+PAPEROPT_letter = -D latex_paper_size=letter
+ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+# the i18n builder cannot share the environment and doctrees with the others
+I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+
+.PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest gettext
+
+help:
+	@echo "Please use \`make <target>' where <target> is one of"
+	@echo "  html       to make standalone HTML files"
+	@echo "  dirhtml    to make HTML files named index.html in directories"
+	@echo "  singlehtml to make a single large HTML file"
+	@echo "  pickle     to make pickle files"
+	@echo "  json       to make JSON files"
+	@echo "  htmlhelp   to make HTML files and a HTML help project"
+	@echo "  qthelp     to make HTML files and a qthelp project"
+	@echo "  devhelp    to make HTML files and a Devhelp project"
+	@echo "  epub       to make an epub"
+	@echo "  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
+	@echo "  latexpdf   to make LaTeX files and run them through pdflatex"
+	@echo "  text       to make text files"
+	@echo "  man        to make manual pages"
+	@echo "  texinfo    to make Texinfo files"
+	@echo "  info       to make Texinfo files and run them through makeinfo"
+	@echo "  gettext    to make PO message catalogs"
+	@echo "  changes    to make an overview of all changed/added/deprecated items"
+	@echo "  linkcheck  to check all external links for integrity"
+	@echo "  doctest    to run all doctests embedded in the documentation (if enabled)"
+
+clean:
+	-rm -rf $(BUILDDIR)/*
+
+html:
+	$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
+
+dirhtml:
+	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
+
+singlehtml:
+	$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
+	@echo
+	@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
+
+pickle:
+	$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
+	@echo
+	@echo "Build finished; now you can process the pickle files."
+
+json:
+	$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
+	@echo
+	@echo "Build finished; now you can process the JSON files."
+
+htmlhelp:
+	$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
+	@echo
+	@echo "Build finished; now you can run HTML Help Workshop with the" \
+	      ".hhp project file in $(BUILDDIR)/htmlhelp."
+
+qthelp:
+	$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
+	@echo
+	@echo "Build finished; now you can run "qcollectiongenerator" with the" \
+	      ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
+	@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/Pexpect.qhcp"
+	@echo "To view the help file:"
+	@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/Pexpect.qhc"
+
+devhelp:
+	$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
+	@echo
+	@echo "Build finished."
+	@echo "To view the help file:"
+	@echo "# mkdir -p $$HOME/.local/share/devhelp/Pexpect"
+	@echo "# ln -s $(BUILDDIR)/devhelp $$HOME/.local/share/devhelp/Pexpect"
+	@echo "# devhelp"
+
+epub:
+	$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
+	@echo
+	@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
+
+latex:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo
+	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
+	@echo "Run \`make' in that directory to run these through (pdf)latex" \
+	      "(use \`make latexpdf' here to do that automatically)."
+
+latexpdf:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo "Running LaTeX files through pdflatex..."
+	$(MAKE) -C $(BUILDDIR)/latex all-pdf
+	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
+
+text:
+	$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
+	@echo
+	@echo "Build finished. The text files are in $(BUILDDIR)/text."
+
+man:
+	$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
+	@echo
+	@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
+
+texinfo:
+	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	@echo
+	@echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
+	@echo "Run \`make' in that directory to run these through makeinfo" \
+	      "(use \`make info' here to do that automatically)."
+
+info:
+	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	@echo "Running Texinfo files through makeinfo..."
+	make -C $(BUILDDIR)/texinfo info
+	@echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."
+
+gettext:
+	$(SPHINXBUILD) -b gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
+	@echo
+	@echo "Build finished. The message catalogs are in $(BUILDDIR)/locale."
+
+changes:
+	$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
+	@echo
+	@echo "The overview file is in $(BUILDDIR)/changes."
+
+linkcheck:
+	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
+	@echo
+	@echo "Link check complete; look for any errors in the above output " \
+	      "or in $(BUILDDIR)/linkcheck/output.txt."
+
+doctest:
+	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
+	@echo "Testing of doctests in the sources finished, look at the " \
+	      "results in $(BUILDDIR)/doctest/output.txt."
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/api/fdpexpect.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/api/fdpexpect.rst
new file mode 100644
index 00000000000..3ddf2cdb228
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/api/fdpexpect.rst
@@ -0,0 +1,20 @@
+fdpexpect - use pexpect with a file descriptor
+==============================================
+
+.. automodule:: pexpect.fdpexpect
+
+fdspawn class
+-------------
+
+.. autoclass:: fdspawn
+   :show-inheritance:
+
+   .. automethod:: __init__
+   .. automethod:: isalive
+   .. automethod:: close
+
+   .. method:: expect
+               expect_exact
+               expect_list
+
+      As :class:`pexpect.spawn`.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/api/index.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/api/index.rst
new file mode 100644
index 00000000000..5277d1cd00a
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/api/index.rst
@@ -0,0 +1,18 @@
+API documentation
+=================
+
+.. toctree::
+   :maxdepth: 2
+
+   pexpect
+   fdpexpect
+   popen_spawn
+   replwrap
+   pxssh
+
+The modules ``pexpect.screen`` and ``pexpect.ANSI`` have been deprecated in
+Pexpect version 4. They were separate from the main use cases for Pexpect, and
+there are better maintained Python terminal emulator packages, such as
+`pyte <https://pypi.python.org/pypi/pyte>`__.
+These modules are still present for now, but we don't advise using them in new
+code.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/api/pexpect.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/api/pexpect.rst
new file mode 100644
index 00000000000..79bbcefffc5
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/api/pexpect.rst
@@ -0,0 +1,115 @@
+Core pexpect components
+=======================
+
+.. automodule:: pexpect
+
+spawn class
+-----------
+
+.. autoclass:: spawn
+
+   .. automethod:: __init__
+   .. automethod:: expect
+   .. automethod:: expect_exact
+   .. automethod:: expect_list
+   .. automethod:: compile_pattern_list
+   .. automethod:: send
+   .. automethod:: sendline
+   .. automethod:: write
+   .. automethod:: writelines
+   .. automethod:: sendcontrol
+   .. automethod:: sendeof
+   .. automethod:: sendintr
+   .. automethod:: read
+   .. automethod:: readline
+   .. automethod:: read_nonblocking
+   .. automethod:: eof
+   .. automethod:: interact
+
+   .. attribute:: logfile
+                  logfile_read
+                  logfile_send
+
+      Set these to a Python file object (or :data:`sys.stdout`) to log all
+      communication, data read from the child process, or data sent to the child
+      process.
+
+      .. note::
+
+         With :class:`spawn` in bytes mode, the log files should be open for
+         writing binary data. In unicode mode, they should
+         be open for writing unicode text. See :ref:`unicode`.
+
+Controlling the child process
+`````````````````````````````
+
+.. class:: spawn
+
+   .. automethod:: kill
+   .. automethod:: terminate
+   .. automethod:: isalive
+   .. automethod:: wait
+   .. automethod:: close
+   .. automethod:: getwinsize
+   .. automethod:: setwinsize
+   .. automethod:: getecho
+   .. automethod:: setecho
+   .. automethod:: waitnoecho
+
+   .. attribute:: pid
+
+      The process ID of the child process.
+
+   .. attribute:: child_fd
+
+      The file descriptor used to communicate with the child process.
+
+.. _unicode:
+
+Handling unicode
+````````````````
+
+By default, :class:`spawn` is a bytes interface: its read methods return bytes,
+and its write/send and expect methods expect bytes. If you pass the *encoding*
+parameter to the constructor, it will instead act as a unicode interface:
+strings you send will be encoded using that encoding, and bytes received will
+be decoded before returning them to you. In this mode, patterns for
+:meth:`~spawn.expect` and :meth:`~spawn.expect_exact` should also be unicode.
+
+.. versionchanged:: 4.0
+
+   :class:`spawn` provides both the bytes and unicode interfaces. In Pexpect
+   3.x, the unicode interface was provided by a separate ``spawnu`` class.
+
+For backwards compatibility, some Unicode is allowed in bytes mode: the
+send methods will encode arbitrary unicode as UTF-8 before sending it to the
+child process, and its expect methods can accept ascii-only unicode strings.
+
+.. note::
+
+   Unicode handling with pexpect works the same way on Python 2 and 3, despite
+   the difference in names. I.e.:
+
+   - Bytes mode works with ``str`` on Python 2, and :class:`bytes` on Python 3,
+   - Unicode mode works with ``unicode`` on Python 2, and :class:`str` on Python 3.
+
+run function
+------------
+
+.. autofunction:: run
+
+Exceptions
+----------
+
+.. autoclass:: EOF
+
+.. autoclass:: TIMEOUT
+
+.. autoclass:: ExceptionPexpect
+
+Utility functions
+-----------------
+
+.. autofunction:: which
+
+.. autofunction:: split_command_line
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/api/popen_spawn.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/api/popen_spawn.rst
new file mode 100644
index 00000000000..64cae1561ea
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/api/popen_spawn.rst
@@ -0,0 +1,24 @@
+popen_spawn - use pexpect with a piped subprocess
+=================================================
+
+.. automodule:: pexpect.popen_spawn
+
+PopenSpawn class
+----------------
+
+.. autoclass:: PopenSpawn
+
+   .. automethod:: __init__
+   .. automethod:: send
+   .. automethod:: sendline
+   .. automethod:: write
+   .. automethod:: writelines
+   .. automethod:: kill
+   .. automethod:: sendeof
+   .. automethod:: wait
+   
+   .. method:: expect
+               expect_exact
+               expect_list
+
+      As :class:`pexpect.spawn`.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/api/pxssh.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/api/pxssh.rst
new file mode 100644
index 00000000000..b947f4b5ace
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/api/pxssh.rst
@@ -0,0 +1,34 @@
+pxssh - control an SSH session
+==============================
+
+.. automodule:: pexpect.pxssh
+
+.. autoclass:: ExceptionPxssh
+
+pxssh class
+-----------
+
+.. autoclass:: pxssh
+
+   .. automethod:: __init__
+
+   .. attribute:: PROMPT
+
+      The regex pattern to search for to find the prompt. If you call :meth:`login`
+      with ``auto_prompt_reset=False``, you must set this attribute manually.
+
+   .. attribute:: force_password
+
+      If this is set to True, public key authentication is disabled, forcing the
+      server to ask for a password. Note that the sysadmin can disable password
+      logins, in which case this won't work.
+
+   .. attribute:: options
+
+      The dictionary of user specified SSH options, eg, ``options = dict(StrictHostKeyChecking="no", UserKnownHostsFile="/dev/null")``
+
+   .. automethod:: login
+   .. automethod:: logout
+   .. automethod:: prompt
+   .. automethod:: sync_original_prompt
+   .. automethod:: set_unique_prompt
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/api/replwrap.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/api/replwrap.rst
new file mode 100644
index 00000000000..bf44a948db8
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/api/replwrap.rst
@@ -0,0 +1,26 @@
+replwrap - Control read-eval-print-loops
+========================================
+
+.. automodule:: pexpect.replwrap
+
+.. versionadded:: 3.3
+
+.. autoclass:: REPLWrapper
+
+   .. automethod:: run_command
+
+.. data:: PEXPECT_PROMPT
+
+   A string that can be used as a prompt, and is unlikely to be found in output.
+
+Using the objects above, it is easy to wrap a REPL. For instance, to use a
+Python shell::
+
+    py = REPLWrapper("python", ">>> ", "import sys; sys.ps1={!r}; sys.ps2={!r}")
+    py.run_command("4+7")
+
+Convenience functions are provided for Python and bash shells:
+
+.. autofunction:: python
+
+.. autofunction:: bash
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/clean.css b/lldb/third_party/Python/module/pexpect-4.6/doc/clean.css
new file mode 100644
index 00000000000..e8d98ddb2e5
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/clean.css
@@ -0,0 +1,103 @@
+
+body {
+	margin:0px;
+	padding:0px;
+	font-family:verdana, arial, helvetica, sans-serif; 
+	color:#333;
+	background-color:white;
+	}
+pre {
+  background: #eeeeee;
+  border: 1px solid #888888;
+  color: black;
+  padding: 1em;
+  white-space: pre;
+}
+h1 {
+	margin:5px 0px 5px 0px;
+	padding:0px;
+	font-size:20px;
+	line-height:28px;
+	font-weight:900;
+	color:#44f;
+	}
+h2 {
+	margin:5px 0px 5px 0px;
+	padding:0px;
+	font-size:17px;
+	line-height:28px;
+	font-weight:900;
+	color:#226;
+	}
+h3 {
+	margin:5px 0px 5px 0px;
+	padding:0px;
+	font-size:15px;
+	line-height:28px;
+	font-weight:900;
+	}
+p
+{
+	margin:0px 0px 16px 0px;
+	font:11px/20px verdana, arial, helvetica, sans-serif;
+	padding:0px;
+}
+table 
+{
+    font-size: 10pt; 
+	color: #000000;
+}
+td{border:1px solid #999;}
+
+table.pymenu {color: #000000; background-color: #99ccff}
+th.pymenu {color: #ffffff; background-color: #003366}
+
+.code 
+{
+	font-family: "Lucida Console", monospace; font-weight: bold;
+	color: #007700; background-color: #eeeeee
+}
+
+#Content>p {margin:0px;}
+#Content>p+p {text-indent:30px;}
+
+a {
+	text-decoration:none;
+	font-weight:600;
+	font-family:verdana, arial, helvetica, sans-serif;
+	color: #900;
+}
+//a:link {color:#09c;}
+//a x:visited {color:#07a;}
+a:hover {background-color:#ee0;}
+
+#Header {
+	margin:10px 0px 10px 0px;
+	padding:10px 0px 10px 20px;
+	/* For IE5/Win's benefit height = [correct height] + [top padding] + [top and bottom border widths] */
+	height:33px; /* 14px + 17px + 2px = 33px */
+	border-style:solid;
+	border-color:black;
+	border-width:1px 0px; /* top and bottom borders: 1px; left and right borders: 0px */
+	line-height:33px;
+	background-color:#eee;
+	height:66px; /* the correct height */
+	}
+
+#Content {
+	margin:0px 210px 50px 10px;
+	padding:10px;
+	}
+
+#Menu {
+	position:absolute;
+	top:100px;
+	right:20px;
+	width:172px;
+	padding:10px;
+	background-color:#eee;
+	border:1px solid #999; // dashed #999;
+	line-height:17px;
+	width:150px;
+	font-size:11px;
+	}
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/commonissues.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/commonissues.rst
new file mode 100644
index 00000000000..f60085e2aaa
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/commonissues.rst
@@ -0,0 +1,101 @@
+Common problems
+===============
+
+Threads
+-------
+
+On Linux (RH 8) you cannot spawn a child from a different thread and pass the
+handle back to a worker thread. The child is successfully spawned but you can't
+interact with it. The only way to make it work is to spawn and interact with the
+child all in the same thread. [Adam Kerrison]
+
+Timing issue with send() and sendline()
+---------------------------------------
+
+This problem has been addressed and should not affect most users.
+
+It is sometimes possible to read an echo of the string sent with
+:meth:`~pexpect.spawn.send` and :meth:`~pexpect.spawn.sendline`. If you call
+:meth:`~pexpect.spawn.send` and then immediately call :meth:`~pexpect.spawn.readline`,
+you may get part of your output echoed back. You may read back what you just
+wrote even if the child application does not explicitly echo it. Timing is
+critical. This could be a security issue when talking to an application that
+asks for a password; otherwise, this does not seem like a big deal. But why do
+TTYs do this?
+
+People usually report this when they are trying to control SSH or some other
+login. For example, if your code looks something like this::
+
+    child.expect ('[pP]assword:')
+    child.sendline (my_password)
+
+
+1. SSH prints "password:" prompt to the user.
+2. SSH turns off echo on the TTY device.
+3. SSH waits for user to enter a password.
+
+When scripting with Pexpect what can happen is that Pexpect will respond to the
+"password:" prompt before SSH has had time to turn off TTY echo. In other words,
+Pexpect sends the password between steps 1. and 2., so the password gets echoed
+back to the TTY. I would call this an SSH bug.
+
+Pexpect now automatically adds a short delay before sending data to a child
+process. This more closely mimics what happens in the usual human-to-app
+interaction. The delay can be tuned with the ``delaybeforesend`` attribute of the
+spawn class. In general, this fixes the problem for everyone and so this should
+not be an issue for most users. For some applications you might with to turn it
+off::
+
+    child = pexpect.spawn ("ssh user@example.com")
+    child.delaybeforesend = None
+
+Truncated output just before child exits
+----------------------------------------
+
+So far I have seen this only on older versions of Apple's MacOS X. If the child
+application quits it may not flush its output buffer. This means that your
+Pexpect application will receive an EOF even though it should have received a
+little more data before the child died. This is not generally a problem when
+talking to interactive child applications. One example where it is a problem is
+when trying to read output from a program like *ls*. You may receive most of the
+directory listing, but the last few lines will get lost before you receive an EOF.
+The reason for this is that *ls* runs; completes its task; and then exits. The
+buffer is not flushed before exit so the last few lines are lost. The following
+example demonstrates the problem::
+
+    child = pexpect.spawn('ls -l')
+    child.expect(pexpect.EOF)
+    print child.before       
+
+Controlling SSH on Solaris
+--------------------------
+
+Pexpect does not yet work perfectly on Solaris. One common problem is that SSH
+sometimes will not allow TTY password authentication. For example, you may
+expect SSH to ask you for a password using code like this::
+
+    child = pexpect.spawn('ssh user@example.com')
+    child.expect('password')
+    child.sendline('mypassword')
+
+You may see the following error come back from a spawned child SSH::
+
+    Permission denied (publickey,keyboard-interactive). 
+
+This means that SSH thinks it can't access the TTY to ask you for your password.
+The only solution I have found is to use public key authentication with SSH.
+This bypasses the need for a password. I'm not happy with this solution. The
+problem is due to poor support for Solaris Pseudo TTYs in the Python Standard
+Library.
+
+child does not receive full input, emits BEL
+--------------------------------------------
+
+You may notice when running for example cat(1) or base64(1), when sending a
+very long input line, that it is not fully received, and the BEL ('\a') may
+be found in output.
+
+By default the child terminal matches the parent, which is often in "canonical
+mode processing". You may wish to disable this mode. The exact limit of a line
+varies by operating system, and details of disabling canonical mode may be
+found in the docstring of :meth:`~pexpect.spawn.send`.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/conf.py b/lldb/third_party/Python/module/pexpect-4.6/doc/conf.py
new file mode 100644
index 00000000000..a7341473b69
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/conf.py
@@ -0,0 +1,250 @@
+# -*- coding: utf-8 -*-
+#
+# Pexpect documentation build configuration file, created by
+# sphinx-quickstart on Tue Sep 17 11:05:11 2013.
+#
+# This file is execfile()d with the current directory set to its containing dir.
+#
+# Note that not all possible configuration values are present in this
+# autogenerated file.
+#
+# All configuration values have a default; values that are commented out
+# serve to show the default.
+
+import sys, os
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+sys.path.insert(0, os.path.abspath('sphinxext'))
+
+# -- General configuration -----------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#needs_sphinx = '1.0'
+
+# Add any Sphinx extension module names here, as strings. They can be extensions
+# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+extensions = ['sphinx.ext.autodoc', 'sphinx.ext.intersphinx',
+              'sphinx.ext.viewcode', 'github',  # for easy GitHub links
+              ]
+
+github_project_url = "https://github.com/pexpect/pexpect"
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# The suffix of source filenames.
+source_suffix = '.rst'
+
+# The encoding of source files.
+#source_encoding = 'utf-8-sig'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General information about the project.
+project = u'Pexpect'
+copyright = u'2013, Noah Spurrier and contributors'
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+#
+# The short X.Y version.
+version = '4.6'
+# The full version, including alpha/beta/rc tags.
+release = version
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#language = None
+
+# There are two options for replacing |today|: either, you set today to some
+# non-false value, then it is used:
+#today = ''
+# Else, today_fmt is used as the format for a strftime call.
+#today_fmt = '%B %d, %Y'
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+exclude_patterns = ['_build']
+
+# The reST default role (used for this markup: `text`) to use for all documents.
+#default_role = None
+
+# If true, '()' will be appended to :func: etc. cross-reference text.
+#add_function_parentheses = True
+
+# If true, the current module name will be prepended to all description
+# unit titles (such as .. function::).
+#add_module_names = True
+
+# If true, sectionauthor and moduleauthor directives will be shown in the
+# output. They are ignored by default.
+#show_authors = False
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = 'sphinx'
+
+# A list of ignored prefixes for module index sorting.
+#modindex_common_prefix = []
+
+
+# -- Options for HTML output ---------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+html_theme = 'default'
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#html_theme_options = {}
+
+# Add any paths that contain custom themes here, relative to this directory.
+#html_theme_path = []
+
+# The name for this set of Sphinx documents.  If None, it defaults to
+# "<project> v<release> documentation".
+#html_title = None
+
+# A shorter title for the navigation bar.  Default is the same as html_title.
+#html_short_title = None
+
+# The name of an image file (relative to this directory) to place at the top
+# of the sidebar.
+#html_logo = None
+
+# The name of an image file (within the static path) to use as favicon of the
+# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
+# pixels large.
+#html_favicon = None
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_static']
+
+# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
+# using the given strftime format.
+#html_last_updated_fmt = '%b %d, %Y'
+
+# If true, SmartyPants will be used to convert quotes and dashes to
+# typographically correct entities.
+#html_use_smartypants = True
+
+# Custom sidebar templates, maps document names to template names.
+#html_sidebars = {}
+
+# Additional templates that should be rendered to pages, maps page names to
+# template names.
+#html_additional_pages = {}
+
+# If false, no module index is generated.
+#html_domain_indices = True
+
+# If false, no index is generated.
+#html_use_index = True
+
+# If true, the index is split into individual pages for each letter.
+#html_split_index = False
+
+# If true, links to the reST sources are added to the pages.
+#html_show_sourcelink = True
+
+# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
+#html_show_sphinx = True
+
+# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
+#html_show_copyright = True
+
+# If true, an OpenSearch description file will be output, and all pages will
+# contain a <link> tag referring to it.  The value of this option must be the
+# base URL from which the finished HTML is served.
+#html_use_opensearch = ''
+
+# This is the file name suffix for HTML files (e.g. ".xhtml").
+#html_file_suffix = None
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'Pexpectdoc'
+
+
+# -- Options for LaTeX output --------------------------------------------------
+
+latex_elements = {
+# The paper size ('letterpaper' or 'a4paper').
+#'papersize': 'letterpaper',
+
+# The font size ('10pt', '11pt' or '12pt').
+#'pointsize': '10pt',
+
+# Additional stuff for the LaTeX preamble.
+#'preamble': '',
+}
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title, author, documentclass [howto/manual]).
+latex_documents = [
+  ('index', 'Pexpect.tex', u'Pexpect Documentation',
+   u'Noah Spurrier and contributors', 'manual'),
+]
+
+# The name of an image file (relative to this directory) to place at the top of
+# the title page.
+#latex_logo = None
+
+# For "manual" documents, if this is true, then toplevel headings are parts,
+# not chapters.
+#latex_use_parts = False
+
+# If true, show page references after internal links.
+#latex_show_pagerefs = False
+
+# If true, show URL addresses after external links.
+#latex_show_urls = False
+
+# Documents to append as an appendix to all manuals.
+#latex_appendices = []
+
+# If false, no module index is generated.
+#latex_domain_indices = True
+
+
+# -- Options for manual page output --------------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
+man_pages = [
+    ('index', 'pexpect', u'Pexpect Documentation',
+     [u'Noah Spurrier and contributors'], 1)
+]
+
+# If true, show URL addresses after external links.
+#man_show_urls = False
+
+
+# -- Options for Texinfo output ------------------------------------------------
+
+# Grouping the document tree into Texinfo files. List of tuples
+# (source start file, target name, title, author,
+#  dir menu entry, description, category)
+texinfo_documents = [
+  ('index', 'Pexpect', u'Pexpect Documentation',
+   u'Noah Spurrier and contributors', 'Pexpect', 'One line description of project.',
+   'Miscellaneous'),
+]
+
+# Documents to append as an appendix to all manuals.
+#texinfo_appendices = []
+
+# If false, no module index is generated.
+#texinfo_domain_indices = True
+
+# How to display URL addresses: 'footnote', 'no', or 'inline'.
+#texinfo_show_urls = 'footnote'
+
+
+# Example configuration for intersphinx: refer to the Python standard library.
+intersphinx_mapping = {'http://docs.python.org/3/': None}
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/examples.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/examples.rst
new file mode 100644
index 00000000000..6338b5c01cd
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/examples.rst
@@ -0,0 +1,63 @@
+Examples
+========
+
+Under the distribution tarball directory you should find an "examples" directory.
+This is the best way to learn to use Pexpect. See the descriptions of Pexpect
+Examples.
+
+`topip.py <https://github.com/pexpect/pexpect/blob/master/examples/topip.py>`_
+  This runs `netstat` on a local or remote server. It calculates some simple
+  statistical information on the number of external inet connections. This can
+  be used to detect if one IP address is taking up an excessive number of
+  connections. It can also send an email alert if a given IP address exceeds a
+  threshold between runs of the script. This script can be used as a drop-in
+  Munin plugin or it can be used stand-alone from cron. I used this on a busy
+  web server that would sometimes get hit with denial of service attacks. This
+  made it easy to see if a script was opening many multiple connections. A
+  typical browser would open fewer than 10 connections at once. A script might
+  open over 100 simultaneous connections.
+
+`hive.py <https://github.com/pexpect/pexpect/blob/master/examples/hive.py>`_
+  This script creates SSH connections to a list of hosts that you provide.
+  Then you are given a command line prompt. Each shell command that you
+  enter is sent to all the hosts. The response from each host is collected
+  and printed. For example, you could connect to a dozen different
+  machines and reboot them all at once.
+
+`script.py <https://github.com/pexpect/pexpect/blob/master/examples/script.py>`_
+  This implements a command similar to the classic BSD "script" command.
+  This will start a subshell and log all input and output to a file.
+  This demonstrates the :meth:`~pexpect.spawn.interact` method of Pexpect.
+
+`ftp.py <https://github.com/pexpect/pexpect/blob/master/examples/ftp.py>`_
+  This demonstrates an FTP "bookmark". This connects to an ftp site;
+  does a few ftp tasks; and then gives the user interactive control over
+  the session. In this case the "bookmark" is to a directory on the
+  OpenBSD ftp server. It puts you in the i386 packages directory. You
+  can easily modify this for other sites. This demonstrates the
+  :meth:`~pexpect.spawn.interact` method of Pexpect.
+
+`monitor.py <https://github.com/pexpect/pexpect/blob/master/examples/monitor.py>`_
+  This runs a sequence of commands on a remote host using SSH. It runs a
+  simple system checks such as uptime and free to monitor the state of
+  the remote host.
+
+`passmass.py <https://github.com/pexpect/pexpect/blob/master/examples/passmass.py>`_
+  This will login to each given server and change the password of the
+  given user. This demonstrates scripting logins and passwords.
+
+`python.py <https://github.com/pexpect/pexpect/blob/master/examples/python.py>`_
+  This starts the python interpreter and prints the greeting message
+  backwards. It then gives the user iteractive control of Python. It's
+  pretty useless!
+
+`ssh_tunnel.py <https://github.com/pexpect/pexpect/blob/master/examples/ssh_tunnel.py>`_
+  This starts an SSH tunnel to a remote machine. It monitors the
+  connection and restarts the tunnel if it goes down.
+
+`uptime.py <https://github.com/pexpect/pexpect/blob/master/examples/uptime.py>`_
+  This will run the uptime command and parse the output into variables.
+  This demonstrates using a single regular expression to match the
+  output of a command and capturing different variable in match groups.
+  The grouping regular expression handles a wide variety of different
+  uptime formats. 
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/history.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/history.rst
new file mode 100644
index 00000000000..41a591819b3
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/history.rst
@@ -0,0 +1,338 @@
+History
+=======
+
+Releases
+--------
+
+Version 4.6
+```````````
+
+* The :meth:`.pxssh.login` method now supports an ``ssh_config`` parameter,
+  which can be used to specify a file path to an SSH config file
+  (:ghpull:`490`).
+* Improved compatability for the ``crlf`` parameter of :class:`~.PopenSpawn`
+  (:ghpull:`493`)
+* Fixed an issue in read timeout handling when using :class:`~.spawn` and
+  :class:`~.fdspawn` with the ``use_poll`` parameter (:ghpull:`492`).
+
+Version 4.5
+```````````
+
+* :class:`~.spawn` and :class:`~.fdspawn` now have a ``use_poll`` parameter.
+  If this is True, they will use :func:`select.poll` instead of :func:`select.select`.
+  ``poll()`` allows file descriptors above 1024, but it must be explicitly
+  enabled due to compatibility concerns (:ghpull:`474`).
+* The :meth:`.pxssh.login` method has several new and changed options:
+
+  * The option ``password_regex`` allows changing
+    the password prompt regex, for servers that include ``password:`` in a banner
+    before reaching a prompt (:ghpull:`468`).
+  * :meth:`~.pxssh.login` now allows for setting up SSH tunnels to be requested once
+    logged in to the remote server. This option is ``ssh_tunnels`` (:ghpull:`473`).
+    The structure should be like this::
+
+          {
+            'local': ['2424:localhost:22'],   # Local SSH tunnels
+            'remote': ['2525:localhost:22'],  # Remote SSH tunnels
+            'dynamic': [8888],                # Dynamic/SOCKS tunnels
+          }
+
+  * The option ``spawn_local_ssh=False`` allows subsequent logins from the
+    remote session and treats the session as if it was local (:ghpull:`472`).
+  * Setting ``sync_original_prompt=False`` will prevent changing the prompt to
+    something unique, in case the remote server is sensitive to new lines at login
+    (:ghpull:`468`).
+  * If ``ssh_key=True`` is passed, the SSH client forces forwarding the authentication
+    agent to the remote server instead of providing a key (:ghpull:`473`).
+
+Version 4.4
+```````````
+
+* :class:`~.PopenSpawn` now has a ``preexec_fn`` parameter, like :class:`~.spawn`
+  and :class:`subprocess.Popen`, for a function to be called in the child
+  process before executing the new command. Like in ``Popen``, this works only
+  in POSIX, and can cause issues if your application also uses threads
+  (:ghpull:`460`).
+* Significant performance improvements when processing large amounts of data
+  (:ghpull:`464`).
+* Ensure that ``spawn.closed`` gets set by :meth:`~.spawn.close`, and improve
+  an example for passing ``SIGWINCH`` through to a child process (:ghpull:`466`).
+
+Version 4.3.1
+`````````````
+
+* When launching bash for :mod:`pexpect.replwrap`, load the system ``bashrc``
+  from a couple of different common locations (:ghpull:`457`), and then unset
+  the ``PROMPT_COMMAND`` environment variable, which can interfere with the
+  prompt we're expecting (:ghpull:`459`).
+
+Version 4.3
+```````````
+
+* The ``async=`` parameter to integrate with asyncio has become ``async_=``
+  (:ghpull:`431`), as *async* is becoming a Python keyword from Python 3.6.
+  Pexpect will still recognise ``async`` as an alternative spelling.
+* Similarly, the module ``pexpect.async`` became ``pexpect._async``
+  (:ghpull:`450`). This module is not part of the public API.
+* Fix problems with asyncio objects closing file descriptors during garbage
+  collection (:ghissue:`347`, :ghpull:`376`).
+* Set the ``.pid`` attribute of a :class:`~.PopenSpawn` object (:ghpull:`417`).
+* Fix passing Windows paths to :class:`~.PopenSpawn` (:ghpull:`446`).
+* :class:`~.PopenSpawn` on Windows can pass string commands through to ``Popen``
+  without splitting them into a list (:ghpull:`447`).
+* Stop ``shlex`` trying to read from stdin when :class:`~.PopenSpawn` is
+  passed ``cmd=None`` (:ghissue:`433`, :ghpull:`434`).
+* Ensure that an error closing a Pexpect spawn object raises a Pexpect error,
+  rather than a Ptyprocess error (:ghissue:`383`, :ghpull:`386`).
+* Cleaned up invalid backslash escape sequences in strings (:ghpull:`430`,
+  :ghpull:`445`).
+* The pattern for a password prompt in :mod:`pexpect.pxssh` changed from
+  ``password`` to ``password:`` (:ghpull:`452`).
+* Correct docstring for using unicode with spawn (:ghpull:`395`).
+* Various other improvements to documentation.
+
+Version 4.2.1
+`````````````
+
+* Fix to allow running ``env`` in replwrap-ed bash.
+* Raise more informative exception from pxssh if it fails to connect.
+* Change ``passmass`` example to not log passwords entered.
+
+Version 4.2
+```````````
+
+* Change: When an ``env`` parameter is specified to the :class:`~.spawn` or
+  :class:`~.run` family of calls containing a value for ``PATH``, its value is
+  used to discover the target executable from a relative path, rather than the
+  current process's environment ``PATH``.  This mirrors the behavior of
+  :func:`subprocess.Popen` in the standard library (:ghissue:`348`).
+
+* Regression: Re-introduce capability for :meth:`read_nonblocking` in class
+  :class:`fdspawn` as previously supported in version 3.3 (:ghissue:`359`).
+
+Version 4.0
+```````````
+
+* Integration with :mod:`asyncio`: passing ``async=True`` to :meth:`~.spawn.expect`,
+  :meth:`~.spawn.expect_exact` or :meth:`~.spawn.expect_list` will make them return a
+  coroutine. You can get the result using ``yield from``, or wrap it in an
+  :class:`asyncio.Task`. This allows the event loop to do other things while
+  waiting for output that matches a pattern.
+* Experimental support for Windows (with some caveats)—see :ref:`windows`.
+* Enhancement: allow method as callbacks of argument ``events`` for
+  :func:`pexpect.run` (:ghissue:`176`).
+* It is now possible to call :meth:`~.spawn.wait` multiple times, or after a process
+  is already determined to be terminated without raising an exception
+  (:ghpull:`211`).
+* New :class:`pexpect.spawn` keyword argument, ``dimensions=(rows, columns)``
+  allows setting terminal screen dimensions before launching a program
+  (:ghissue:`122`).
+* Fix regression that prevented executable, but unreadable files from
+  being found when not specified by absolute path -- such as
+  /usr/bin/sudo (:ghissue:`104`).
+* Fixed regression when executing pexpect with some prior releases of
+  the multiprocessing module where stdin has been closed (:ghissue:`86`).
+
+Backwards incompatible changes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+* Deprecated ``pexpect.screen`` and ``pexpect.ANSI``. Please use other packages
+  such as `pyte <https://pypi.python.org/pypi/pyte>`__ to emulate a terminal.
+* Removed the independent top-level modules (``pxssh fdpexpect FSM screen ANSI``)
+  which were installed alongside Pexpect. These were moved into the Pexpect
+  package in 3.0, but the old names were left as aliases.
+* Child processes created by Pexpect no longer ignore SIGHUP by default: the
+  ``ignore_sighup`` parameter of :class:`pexpect.spawn` defaults to False. To
+  get the old behaviour, pass ``ignore_sighup=True``.
+
+Version 3.3
+```````````
+
+* Added a mechanism to wrap REPLs, or shells, in an object which can conveniently
+  be used to send commands and wait for the output (:mod:`pexpect.replwrap`).
+* Fixed issue where pexpect would attempt to execute a directory because
+  it has the 'execute' bit set (:ghissue:`37`).
+* Removed the ``pexpect.psh`` module. This was never documented, and we found
+  no evidence that people use it. The new :mod:`pexpect.replwrap` module
+  provides a more flexible alternative.
+* Fixed ``TypeError: got <type 'str'> ('\r\n') as pattern`` in :meth:`spawnu.readline`
+  method (:ghissue:`67`).
+* Fixed issue where EOF was not correctly detected in :meth:`~.interact`, causing
+  a repeating loop of output on Linux, and blocking before EOF on BSD and
+  Solaris (:ghissue:`49`).
+* Several Solaris (SmartOS) bugfixes, preventing :exc:`IOError` exceptions, especially
+  when used with cron(1) (:ghissue:`44`).
+* Added new keyword argument ``echo=True`` for :class:`spawn`.  On SVR4-like
+  systems, the method :meth:`~.isatty` will always return *False*: the child pty
+  does not appear as a terminal.  Therefore, :meth:`~.setecho`, :meth:`~.getwinsize`,
+  :meth:`~.setwinsize`, and :meth:`~.waitnoecho` are not supported on those platforms.
+
+After this, we intend to start working on a bigger refactoring of the code, to
+be released as Pexpect 4. There may be more bugfix 3.x releases, however.
+
+Version 3.2
+```````````
+
+* Fix exception handling from :func:`select.select` on Python 2 (:ghpull:`38`).
+  This was accidentally broken in the previous release when it was fixed for
+  Python 3.
+* Removed a workaround for ``TIOCSWINSZ`` on very old systems, which was causing
+  issues on some BSD systems (:ghpull:`40`).
+* Fixed an issue with exception handling in :mod:`~pexpect.pxssh` (:ghpull:`43`)
+
+The documentation for :mod:`~pexpect.pxssh` was improved.
+
+Version 3.1
+```````````
+
+* Fix an issue that prevented importing pexpect on Python 3 when ``sys.stdout``
+  was reassigned (:ghissue:`30`).
+* Improve prompt synchronisation in :mod:`~pexpect.pxssh` (:ghpull:`28`).
+* Fix pickling exception instances (:ghpull:`34`).
+* Fix handling exceptions from :func:`select.select` on Python 3 (:ghpull:`33`).
+
+The examples have also been cleaned up somewhat - this will continue in future
+releases.
+
+Version 3.0
+```````````
+
+The new major version number doesn't indicate any deliberate API incompatibility.
+We have endeavoured to avoid breaking existing APIs. However, pexpect is under
+new maintenance after a long dormancy, so some caution is warranted.
+
+* A new :ref:`unicode API <unicode>` was introduced.
+* Python 3 is now supported, using a single codebase.
+* Pexpect now requires at least Python 2.6 or 3.2.
+* The modules other than pexpect, such as :mod:`pexpect.fdpexpect` and
+  :mod:`pexpect.pxssh`, were moved into the pexpect package. For now, wrapper
+  modules are installed to the old locations for backwards compatibility (e.g.
+  ``import pxssh`` will still work), but these will be removed at some point in
+  the future.
+* Ignoring ``SIGHUP`` is now optional - thanks to Kimmo Parviainen-Jalanko for
+  the patch.
+
+We also now have `docs on ReadTheDocs <https://pexpect.readthedocs.io/>`_,
+and `continuous integration on Travis CI <https://travis-ci.org/pexpect/pexpect>`_.
+
+Version 2.4
+```````````
+
+* Fix a bug regarding making the pty the controlling terminal when the process
+  spawning it is not, actually, a terminal (such as from cron)
+
+Version 2.3
+```````````
+
+* Fixed OSError exception when a pexpect object is cleaned up. Previously, you
+  might have seen this exception::
+
+      Exception exceptions.OSError: (10, 'No child processes')
+      in <bound method spawn.__del__ of <pexpect.spawn instance at 0xd248c>> ignored
+
+  You should not see that anymore. Thanks to Michael Surette.
+* Added support for buffering reads. This greatly improves speed when trying to
+  match long output from a child process. When you create an instance of the spawn
+  object you can then set a buffer size. For now you MUST do the following to turn
+  on buffering -- it may be on by default in future version::
+
+      child = pexpect.spawn ('my_command')
+      child.maxread=1000 # Sets buffer to 1000 characters.
+
+* I made a subtle change to the way TIMEOUT and EOF exceptions behave.
+  Previously you could either expect these states in which case pexpect
+  will not raise an exception, or you could just let pexpect raise an
+  exception when these states were encountered. If you expected the
+  states then the ``before`` property was set to everything before the
+  state was encountered, but if you let pexpect raise the exception then
+  ``before`` was not set. Now, the ``before`` property will get set either
+  way you choose to handle these states.
+* The spawn object now provides iterators for a *file-like interface*.
+  This makes Pexpect a more complete file-like object. You can now write
+  code like this::
+
+      child = pexpect.spawn ('ls -l')
+      for line in child:
+          print line
+
+* write and writelines() no longer return a value. Use send() if you need that
+  functionality. I did this to make the Spawn object more closely match a
+  file-like object.
+* Added the attribute ``exitstatus``. This will give the exit code returned
+  by the child process. This will be set to ``None`` while the child is still
+  alive. When ``isalive()`` returns 0 then ``exitstatus`` will be set.
+* Made a few more tweaks to ``isalive()`` so that it will operate more
+  consistently on different platforms. Solaris is the most difficult to support.
+* You can now put ``TIMEOUT`` in a list of expected patterns. This is just like
+  putting ``EOF`` in the pattern list. Expecting for a ``TIMEOUT`` may not be
+  used as often as ``EOF``, but this makes Pexpect more consistent.
+* Thanks to a suggestion and sample code from Chad J. Schroeder I added the ability
+  for Pexpect to operate on a file descriptor that is already open. This means that
+  Pexpect can be used to control streams such as those from serial port devices. Now,
+  you just pass the integer file descriptor as the "command" when constructing a
+  spawn open. For example on a Linux box with a modem on ttyS1::
+
+      fd = os.open("/dev/ttyS1", os.O_RDWR|os.O_NONBLOCK|os.O_NOCTTY)
+      m = pexpect.spawn(fd) # Note integer fd is used instead of usual string.
+      m.send("+++") # Escape sequence
+      m.send("ATZ0\r") # Reset modem to profile 0
+      rval = m.expect(["OK", "ERROR"])
+
+* ``read()`` was renamed to ``read_nonblocking()``. Added new ``read()`` method
+  that matches file-like object interface. In general, you should not notice
+  the difference except that ``read()`` no longer allows you to directly set the
+  timeout value. I hope this will not effect any existing code. Switching to
+  ``read_nonblocking()`` should fix existing code.
+* Changed the name of ``set_echo()`` to ``setecho()``.
+* Changed the name of ``send_eof()`` to ``sendeof()``.
+* Modified ``kill()`` so that it checks to make sure the pid ``isalive()``.
+* modified ``spawn()`` (really called from ``__spawn()``) so that it does not
+  raise an exception if ``setwinsize()`` fails. Some platforms such as Cygwin
+  do not like setwinsize. This was a constant problem and since it is not a
+  critical feature I decided to just silence the error.  Normally I don't like
+  to do that, but in this case I'm making an exception.
+* Added a method ``close()`` that does what you think. It closes the file
+  descriptor of the child application. It makes no attempt to actually kill the
+  child or wait for its status.
+* Add variables ``__version__`` and ``__revision__`` (from cvs) to the pexpect
+  modules.  This is mainly helpful to me so that I can make sure that I'm testing
+  with the right version instead of one already installed.
+* ``log_open()`` and ``log_close(`` have been removed. Now use ``setlog()``.
+  The ``setlog()`` method takes a file object. This is far more flexible than
+  the previous log method. Each time data is written to the file object it will
+  be flushed. To turn logging off simply call ``setlog()`` with None.
+* renamed the ``isAlive()`` method to ``isalive()`` to match the more typical
+  naming style in Python. Also the technique used to detect child process
+  status has been drastically modified. Previously I did some funky stuff
+  with signals which caused indigestion in other Python modules on some
+  platforms. It was a big headache. It still is, but I think it works
+  better now.
+* attribute ``matched`` renamed to ``after``
+* new attribute ``match``
+* The ``expect_eof()`` method is gone. You can now simply use the
+  ``expect()`` method to look for EOF.
+* **Pexpect works on OS X**, but the nature of the quirks cause many of the
+  tests to fail. See bugs. (Incomplete Child Output). The problem is more
+  than minor, but Pexpect is still more than useful for most tasks.
+* **Solaris**: For some reason, the *second* time a pty file descriptor is created and
+  deleted it never gets returned for use. It does not effect the first time
+  or the third time or any time after that. It's only the second time. This
+  is weird... This could be a file descriptor leak, or it could be some
+  peculiarity of how Solaris recycles them. I thought it was a UNIX requirement
+  for the OS to give you the lowest available filedescriptor number. In any case,
+  this should not be a problem unless you create hundreds of pexpect instances...
+  It may also be a pty module bug.
+
+
+Moves and forks
+---------------
+
+* Pexpect development used to be hosted on Sourceforge.
+* In 2011, Thomas Kluyver forked pexpect as 'pexpect-u', to support
+  Python 3. He later decided he had taken the wrong approach with this.
+* In 2012, Noah Spurrier, the original author of Pexpect, moved the
+  project to Github, but was still too busy to develop it much.
+* In 2013, Thomas Kluyver and Jeff Quast forked Pexpect again, intending
+  to call the new fork Pexpected. Noah Spurrier agreed to let them use
+  the name Pexpect, so Pexpect versions 3 and above are based on this
+  fork, which now lives `here on Github <https://github.com/pexpect/pexpect>`_.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/index.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/index.rst
new file mode 100644
index 00000000000..0bcf862dd4d
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/index.rst
@@ -0,0 +1,50 @@
+Pexpect version |version|
+=========================
+
+.. image:: https://travis-ci.org/pexpect/pexpect.png?branch=master
+   :target: https://travis-ci.org/pexpect/pexpect
+   :align: right
+   :alt: Build status
+
+Pexpect makes Python a better tool for controlling other
+applications.
+
+Pexpect is a pure Python module for spawning child applications;
+controlling them; and responding to expected patterns in their output.
+Pexpect works like Don Libes' Expect. Pexpect allows your script to
+spawn a child application and control it as if a human were typing
+commands.
+
+Pexpect can be used for automating interactive applications such as
+ssh, ftp, passwd, telnet, etc. It can be used to a automate setup
+scripts for duplicating software package installations on different
+servers. It can be used for automated software testing. Pexpect is in
+the spirit of Don Libes' Expect, but Pexpect is pure Python. Unlike
+other Expect-like modules for Python, Pexpect does not require TCL or
+Expect nor does it require C extensions to be compiled. It should work
+on any platform that supports the standard Python pty module. The
+Pexpect interface was designed to be easy to use.
+
+Contents:
+
+.. toctree::
+   :maxdepth: 2
+
+   install
+   overview
+   api/index
+   examples
+   FAQ
+   commonissues
+   history
+
+Pexpect is developed `on Github <http://github.com/pexpect/pexpect>`_. Please
+report `issues <https://github.com/pexpect/pexpect/issues>`_ there as well.
+
+Indices and tables
+==================
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/install.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/install.rst
new file mode 100644
index 00000000000..6f7e36af62d
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/install.rst
@@ -0,0 +1,20 @@
+Installation
+============
+
+Pexpect is on PyPI, and can be installed with standard tools::
+
+    pip install pexpect
+
+Or::
+
+    easy_install pexpect
+
+Requirements
+------------
+
+This version of Pexpect requires Python 3.3 or above, or Python 2.7.
+
+As of version 4.0, Pexpect can be used on Windows and POSIX systems. However,
+:class:`pexpect.spawn` and :func:`pexpect.run` are only available on POSIX,
+where the :mod:`pty` module is present in the standard library. See
+:ref:`windows` for more information.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/make.bat b/lldb/third_party/Python/module/pexpect-4.6/doc/make.bat
new file mode 100644
index 00000000000..448f1470824
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/make.bat
@@ -0,0 +1,190 @@
+@ECHO OFF
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set BUILDDIR=_build
+set ALLSPHINXOPTS=-d %BUILDDIR%/doctrees %SPHINXOPTS% .
+set I18NSPHINXOPTS=%SPHINXOPTS% .
+if NOT "%PAPER%" == "" (
+	set ALLSPHINXOPTS=-D latex_paper_size=%PAPER% %ALLSPHINXOPTS%
+	set I18NSPHINXOPTS=-D latex_paper_size=%PAPER% %I18NSPHINXOPTS%
+)
+
+if "%1" == "" goto help
+
+if "%1" == "help" (
+	:help
+	echo.Please use `make ^<target^>` where ^<target^> is one of
+	echo.  html       to make standalone HTML files
+	echo.  dirhtml    to make HTML files named index.html in directories
+	echo.  singlehtml to make a single large HTML file
+	echo.  pickle     to make pickle files
+	echo.  json       to make JSON files
+	echo.  htmlhelp   to make HTML files and a HTML help project
+	echo.  qthelp     to make HTML files and a qthelp project
+	echo.  devhelp    to make HTML files and a Devhelp project
+	echo.  epub       to make an epub
+	echo.  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter
+	echo.  text       to make text files
+	echo.  man        to make manual pages
+	echo.  texinfo    to make Texinfo files
+	echo.  gettext    to make PO message catalogs
+	echo.  changes    to make an overview over all changed/added/deprecated items
+	echo.  linkcheck  to check all external links for integrity
+	echo.  doctest    to run all doctests embedded in the documentation if enabled
+	goto end
+)
+
+if "%1" == "clean" (
+	for /d %%i in (%BUILDDIR%\*) do rmdir /q /s %%i
+	del /q /s %BUILDDIR%\*
+	goto end
+)
+
+if "%1" == "html" (
+	%SPHINXBUILD% -b html %ALLSPHINXOPTS% %BUILDDIR%/html
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The HTML pages are in %BUILDDIR%/html.
+	goto end
+)
+
+if "%1" == "dirhtml" (
+	%SPHINXBUILD% -b dirhtml %ALLSPHINXOPTS% %BUILDDIR%/dirhtml
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The HTML pages are in %BUILDDIR%/dirhtml.
+	goto end
+)
+
+if "%1" == "singlehtml" (
+	%SPHINXBUILD% -b singlehtml %ALLSPHINXOPTS% %BUILDDIR%/singlehtml
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The HTML pages are in %BUILDDIR%/singlehtml.
+	goto end
+)
+
+if "%1" == "pickle" (
+	%SPHINXBUILD% -b pickle %ALLSPHINXOPTS% %BUILDDIR%/pickle
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; now you can process the pickle files.
+	goto end
+)
+
+if "%1" == "json" (
+	%SPHINXBUILD% -b json %ALLSPHINXOPTS% %BUILDDIR%/json
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; now you can process the JSON files.
+	goto end
+)
+
+if "%1" == "htmlhelp" (
+	%SPHINXBUILD% -b htmlhelp %ALLSPHINXOPTS% %BUILDDIR%/htmlhelp
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; now you can run HTML Help Workshop with the ^
+.hhp project file in %BUILDDIR%/htmlhelp.
+	goto end
+)
+
+if "%1" == "qthelp" (
+	%SPHINXBUILD% -b qthelp %ALLSPHINXOPTS% %BUILDDIR%/qthelp
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; now you can run "qcollectiongenerator" with the ^
+.qhcp project file in %BUILDDIR%/qthelp, like this:
+	echo.^> qcollectiongenerator %BUILDDIR%\qthelp\Pexpect.qhcp
+	echo.To view the help file:
+	echo.^> assistant -collectionFile %BUILDDIR%\qthelp\Pexpect.ghc
+	goto end
+)
+
+if "%1" == "devhelp" (
+	%SPHINXBUILD% -b devhelp %ALLSPHINXOPTS% %BUILDDIR%/devhelp
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished.
+	goto end
+)
+
+if "%1" == "epub" (
+	%SPHINXBUILD% -b epub %ALLSPHINXOPTS% %BUILDDIR%/epub
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The epub file is in %BUILDDIR%/epub.
+	goto end
+)
+
+if "%1" == "latex" (
+	%SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished; the LaTeX files are in %BUILDDIR%/latex.
+	goto end
+)
+
+if "%1" == "text" (
+	%SPHINXBUILD% -b text %ALLSPHINXOPTS% %BUILDDIR%/text
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The text files are in %BUILDDIR%/text.
+	goto end
+)
+
+if "%1" == "man" (
+	%SPHINXBUILD% -b man %ALLSPHINXOPTS% %BUILDDIR%/man
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The manual pages are in %BUILDDIR%/man.
+	goto end
+)
+
+if "%1" == "texinfo" (
+	%SPHINXBUILD% -b texinfo %ALLSPHINXOPTS% %BUILDDIR%/texinfo
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The Texinfo files are in %BUILDDIR%/texinfo.
+	goto end
+)
+
+if "%1" == "gettext" (
+	%SPHINXBUILD% -b gettext %I18NSPHINXOPTS% %BUILDDIR%/locale
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Build finished. The message catalogs are in %BUILDDIR%/locale.
+	goto end
+)
+
+if "%1" == "changes" (
+	%SPHINXBUILD% -b changes %ALLSPHINXOPTS% %BUILDDIR%/changes
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.The overview file is in %BUILDDIR%/changes.
+	goto end
+)
+
+if "%1" == "linkcheck" (
+	%SPHINXBUILD% -b linkcheck %ALLSPHINXOPTS% %BUILDDIR%/linkcheck
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Link check complete; look for any errors in the above output ^
+or in %BUILDDIR%/linkcheck/output.txt.
+	goto end
+)
+
+if "%1" == "doctest" (
+	%SPHINXBUILD% -b doctest %ALLSPHINXOPTS% %BUILDDIR%/doctest
+	if errorlevel 1 exit /b 1
+	echo.
+	echo.Testing of doctests in the sources finished, look at the ^
+results in %BUILDDIR%/doctest/output.txt.
+	goto end
+)
+
+:end
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/overview.rst b/lldb/third_party/Python/module/pexpect-4.6/doc/overview.rst
new file mode 100644
index 00000000000..e52809cdc68
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/overview.rst
@@ -0,0 +1,266 @@
+API Overview
+============
+
+Pexpect can be used for automating interactive applications such as ssh, ftp,
+mencoder, passwd, etc. The Pexpect interface was designed to be easy to use.
+
+Here is an example of Pexpect in action::
+
+    # This connects to the openbsd ftp site and
+    # downloads the recursive directory listing.
+    import pexpect
+    child = pexpect.spawn('ftp ftp.openbsd.org')
+    child.expect('Name .*: ')
+    child.sendline('anonymous')
+    child.expect('Password:')
+    child.sendline('noah@example.com')
+    child.expect('ftp> ')
+    child.sendline('lcd /tmp')
+    child.expect('ftp> ')
+    child.sendline('cd pub/OpenBSD')
+    child.expect('ftp> ')
+    child.sendline('get README')
+    child.expect('ftp> ')
+    child.sendline('bye')
+
+Obviously you could write an ftp client using Python's own :mod:`ftplib` module,
+but this is just a demonstration. You can use this technique with any application.
+This is especially handy if you are writing automated test tools.
+
+There are two important methods in Pexpect -- :meth:`~pexpect.spawn.expect` and
+:meth:`~pexpect.spawn.send` (or :meth:`~pexpect.spawn.sendline` which is
+like :meth:`~pexpect.spawn.send` with a linefeed). The :meth:`~pexpect.spawn.expect`
+method waits for the child application to return a given string. The string you
+specify is a regular expression, so you can match complicated patterns. The
+:meth:`~pexpect.spawn.send` method writes a string to the child application.
+From the child's point of view it looks just like someone typed the text from a
+terminal. After each call to :meth:`~pexpect.spawn.expect` the ``before`` and ``after``
+properties will be set to the text printed by child application. The ``before``
+property will contain all text up to the expected string pattern. The ``after``
+string will contain the text that was matched by the expected pattern.
+The match property is set to the `re match object <http://docs.python.org/3/library/re#match-objects>`_.
+
+An example of Pexpect in action may make things more clear. This example uses
+ftp to login to the OpenBSD site; list files in a directory; and then pass
+interactive control of the ftp session to the human user::
+
+    import pexpect
+    child = pexpect.spawn ('ftp ftp.openbsd.org')
+    child.expect ('Name .*: ')
+    child.sendline ('anonymous')
+    child.expect ('Password:')
+    child.sendline ('noah@example.com')
+    child.expect ('ftp> ')
+    child.sendline ('ls /pub/OpenBSD/')
+    child.expect ('ftp> ')
+    print child.before   # Print the result of the ls command.
+    child.interact()     # Give control of the child to the user.
+
+Special EOF and TIMEOUT patterns
+--------------------------------
+
+There are two special patterns to match the End Of File (:class:`~pexpect.EOF`)
+or a Timeout condition (:class:`~pexpect.TIMEOUT`). You can pass these
+patterns to :meth:`~pexpect.spawn.expect`. These patterns are not regular
+expressions. Use them like predefined constants.
+
+If the child has died and you have read all the child's output then ordinarily
+:meth:`~pexpect.spawn.expect` will raise an :class:`~pexpect.EOF` exception.
+You can read everything up to the EOF without generating an exception by using
+the EOF pattern expect. In this case everything the child has output will be
+available in the ``before`` property.
+
+The pattern given to :meth:`~pexpect.spawn.expect` may be a regular expression
+or it may also be a list of regular expressions. This allows you to match
+multiple optional responses. The :meth:`~pexpect.spawn.expect` method returns
+the index of the pattern that was matched. For example, say you wanted to login
+to a server. After entering a password you could get various responses from the
+server -- your password could be rejected; or you could be allowed in and asked
+for your terminal type; or you could be let right in and given a command prompt.
+The following code fragment gives an example of this::
+
+    child.expect('password:')
+    child.sendline(my_secret_password)
+    # We expect any of these three patterns...
+    i = child.expect (['Permission denied', 'Terminal type', '[#\$] '])
+    if i==0:
+        print('Permission denied on host. Can\'t login')
+        child.kill(0)
+    elif i==1:
+        print('Login OK... need to send terminal type.')
+        child.sendline('vt100')
+        child.expect('[#\$] ')
+    elif i==2:
+        print('Login OK.')
+        print('Shell command prompt', child.after)
+
+If nothing matches an expected pattern then :meth:`~pexpect.spawn.expect` will
+eventually raise a :class:`~pexpect.TIMEOUT` exception. The default time is 30
+seconds, but you can change this by passing a timeout argument to
+:meth:`~pexpect.spawn.expect`::
+
+    # Wait no more than 2 minutes (120 seconds) for password prompt.
+    child.expect('password:', timeout=120)
+
+Find the end of line -- CR/LF conventions
+-----------------------------------------
+
+Pexpect matches regular expressions a little differently than what you might be
+used to.
+
+The :regexp:`$` pattern for end of line match is useless. The :regexp:`$`
+matches the end of string, but Pexpect reads from the child one character at a
+time, so each character looks like the end of a line. Pexpect can't do a
+look-ahead into the child's output stream. In general you would have this
+situation when using regular expressions with any stream.
+
+.. note::
+
+  Pexpect does have an internal buffer, so reads are faster than one character
+  at a time, but from the user's perspective the regex patterns test happens
+  one character at a time.
+
+The best way to match the end of a line is to look for the newline: ``"\r\n"``
+(CR/LF). Yes, that does appear to be DOS-style. It may surprise some UNIX people
+to learn that terminal TTY device drivers (dumb, vt100, ANSI, xterm, etc.) all
+use the CR/LF combination to signify the end of line. Pexpect uses a Pseudo-TTY
+device to talk to the child application, so when the child app prints ``"\n"``
+you actually see ``"\r\n"``.
+
+UNIX uses just linefeeds to end lines of text, but not when it comes to TTY
+devices! TTY devices are more like the Windows world. Each line of text ends
+with a CR/LF combination. When you intercept data from a UNIX command from a
+TTY device you will find that the TTY device outputs a CR/LF combination. A
+UNIX command may only write a linefeed (``\n``), but the TTY device driver
+converts it to CR/LF. This means that your terminal will see lines end with
+CR/LF (hex ``0D 0A``). Since Pexpect emulates a terminal, to match ends of
+lines you have to expect the CR/LF combination::
+
+    child.expect('\r\n')
+
+If you just need to skip past a new line then ``expect('\n')`` by itself will
+work, but if you are expecting a specific pattern before the end of line then
+you need to explicitly look for the ``\r``. For example the following expects a
+word at the end of a line::
+
+    child.expect('\w+\r\n')
+
+But the following would both fail::
+
+    child.expect('\w+\n')
+
+And as explained before, trying to use :regexp:`$` to match the end of line
+would not work either::
+
+    child.expect ('\w+$')
+
+So if you need to explicitly look for the END OF LINE, you want to look for the
+CR/LF combination -- not just the LF and not the $ pattern.
+
+This problem is not limited to Pexpect. This problem happens any time you try
+to perform a regular expression match on a stream. Regular expressions need to
+look ahead. With a stream it is hard to look ahead because the process
+generating the stream may not be finished. There is no way to know if the
+process has paused momentarily or is finished and waiting for you. Pexpect must
+implicitly always do a NON greedy match (minimal) at the end of a input.
+
+Pexpect compiles all regular expressions with the :data:`re.DOTALL` flag.
+With the :data:`~re.DOTALL` flag, a ``"."`` will match a newline.
+
+Beware of + and * at the end of patterns
+----------------------------------------
+
+Remember that any time you try to match a pattern that needs look-ahead that
+you will always get a minimal match (non greedy). For example, the following
+will always return just one character::
+
+    child.expect ('.+')
+
+This example will match successfully, but will always return no characters::
+
+    child.expect ('.*')
+
+Generally any star * expression will match as little as possible.
+
+One thing you can do is to try to force a non-ambiguous character at the end of
+your :regexp:`\\d+` pattern. Expect that character to delimit the string. For
+example, you might try making the end of your pattern be :regexp:`\\D+` instead
+of :regexp:`\\D*`. Number digits alone would not satisfy the :regexp:`(\\d+)\\D+`
+pattern. You would need some numbers and at least one non-number at the end.
+
+
+Debugging
+---------
+
+If you get the string value of a :class:`pexpect.spawn` object you will get lots
+of useful debugging information. For debugging it's very useful to use the
+following pattern::
+
+    try:
+        i = child.expect ([pattern1, pattern2, pattern3, etc])
+    except:
+        print("Exception was thrown")
+        print("debug information:")
+        print(str(child))
+
+It is also useful to log the child's input and out to a file or the screen. The
+following will turn on logging and send output to stdout (the screen)::
+
+    child = pexpect.spawn(foo)
+    child.logfile = sys.stdout
+
+Exceptions
+----------
+
+:class:`~pexpect.EOF`
+
+Note that two flavors of EOF Exception may be thrown. They are virtually
+identical except for the message string. For practical purposes you should have
+no need to distinguish between them, but they do give a little extra information
+about what type of platform you are running. The two messages are:
+
+- "End Of File (EOF) in read(). Exception style platform."
+- "End Of File (EOF) in read(). Empty string style platform."
+
+Some UNIX platforms will throw an exception when you try to read from a file
+descriptor in the EOF state. Other UNIX platforms instead quietly return an
+empty string to indicate that the EOF state has been reached.
+
+If you wish to read up to the end of the child's output without generating an
+:class:`~pexpect.EOF` exception then use the ``expect(pexpect.EOF)`` method.
+
+:class:`~pexpect.TIMEOUT`
+
+The :meth:`~pexpect.spawn.expect` and :meth:`~pexpect.spawn.read` methods will
+also timeout if the child does not generate any output for a given amount of
+time. If this happens they will raise a :class:`~pexpect.TIMEOUT` exception.
+You can have these methods ignore timeout and block indefinitely by passing
+``None`` for the timeout parameter::
+
+    child.expect(pexpect.EOF, timeout=None)
+
+.. _windows:
+
+Pexpect on Windows
+------------------
+
+.. versionadded:: 4.0
+   Windows support
+
+Pexpect can be used on Windows to wait for a pattern to be produced by a child
+process, using :class:`pexpect.popen_spawn.PopenSpawn`, or a file descriptor,
+using :class:`pexpect.fdpexpect.fdspawn`.
+
+:class:`pexpect.spawn` and :func:`pexpect.run` are *not* available on Windows,
+as they rely on Unix pseudoterminals (ptys). Cross platform code must not use
+these.
+
+``PopenSpawn`` is not a direct replacement for ``spawn``. Many programs only
+offer interactive behaviour if they detect that they are running in a terminal.
+When run by ``PopenSpawn``, they may behave differently.
+
+.. seealso::
+
+   `winpexpect <https://pypi.python.org/pypi/winpexpect>`__ and `wexpect <https://gist.github.com/anthonyeden/8488763>`__
+     Two unmaintained pexpect-like modules for Windows, which work with a
+     hidden console.
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/requirements.txt b/lldb/third_party/Python/module/pexpect-4.6/doc/requirements.txt
new file mode 100644
index 00000000000..57ebb2d6bdd
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/requirements.txt
@@ -0,0 +1 @@
+ptyprocess
diff --git a/lldb/third_party/Python/module/pexpect-4.6/doc/sphinxext/github.py b/lldb/third_party/Python/module/pexpect-4.6/doc/sphinxext/github.py
new file mode 100644
index 00000000000..519e146d198
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/doc/sphinxext/github.py
@@ -0,0 +1,155 @@
+"""Define text roles for GitHub
+
+* ghissue - Issue
+* ghpull - Pull Request
+* ghuser - User
+
+Adapted from bitbucket example here:
+https://bitbucket.org/birkenfeld/sphinx-contrib/src/tip/bitbucket/sphinxcontrib/bitbucket.py
+
+Authors
+-------
+
+* Doug Hellmann
+* Min RK
+"""
+#
+# Original Copyright (c) 2010 Doug Hellmann.  All rights reserved.
+#
+
+from docutils import nodes, utils
+from docutils.parsers.rst.roles import set_classes
+
+def make_link_node(rawtext, app, type, slug, options):
+    """Create a link to a github resource.
+
+    :param rawtext: Text being replaced with link node.
+    :param app: Sphinx application context
+    :param type: Link type (issues, changeset, etc.)
+    :param slug: ID of the thing to link to
+    :param options: Options dictionary passed to role func.
+    """
+
+    try:
+        base = app.config.github_project_url
+        if not base:
+            raise AttributeError
+        if not base.endswith('/'):
+            base += '/'
+    except AttributeError as err:
+        raise ValueError('github_project_url configuration value is not set (%s)' % str(err))
+
+    ref = base + type + '/' + slug + '/'
+    set_classes(options)
+    prefix = "#"
+    if type == 'pull':
+        prefix = "PR " + prefix
+    node = nodes.reference(rawtext, prefix + utils.unescape(slug), refuri=ref,
+                           **options)
+    return node
+
+def ghissue_role(name, rawtext, text, lineno, inliner, options={}, content=[]):
+    """Link to a GitHub issue.
+
+    Returns 2 part tuple containing list of nodes to insert into the
+    document and a list of system messages.  Both are allowed to be
+    empty.
+
+    :param name: The role name used in the document.
+    :param rawtext: The entire markup snippet, with role.
+    :param text: The text marked with the role.
+    :param lineno: The line number where rawtext appears in the input.
+    :param inliner: The inliner instance that called us.
+    :param options: Directive options for customization.
+    :param content: The directive content for customization.
+    """
+
+    try:
+        issue_num = int(text)
+        if issue_num <= 0:
+            raise ValueError
+    except ValueError:
+        msg = inliner.reporter.error(
+            'GitHub issue number must be a number greater than or equal to 1; '
+            '"%s" is invalid.' % text, line=lineno)
+        prb = inliner.problematic(rawtext, rawtext, msg)
+        return [prb], [msg]
+    app = inliner.document.settings.env.app
+    #app.info('issue %r' % text)
+    if 'pull' in name.lower():
+        category = 'pull'
+    elif 'issue' in name.lower():
+        category = 'issues'
+    else:
+        msg = inliner.reporter.error(
+            'GitHub roles include "ghpull" and "ghissue", '
+            '"%s" is invalid.' % name, line=lineno)
+        prb = inliner.problematic(rawtext, rawtext, msg)
+        return [prb], [msg]
+    node = make_link_node(rawtext, app, category, str(issue_num), options)
+    return [node], []
+
+def ghuser_role(name, rawtext, text, lineno, inliner, options={}, content=[]):
+    """Link to a GitHub user.
+
+    Returns 2 part tuple containing list of nodes to insert into the
+    document and a list of system messages.  Both are allowed to be
+    empty.
+
+    :param name: The role name used in the document.
+    :param rawtext: The entire markup snippet, with role.
+    :param text: The text marked with the role.
+    :param lineno: The line number where rawtext appears in the input.
+    :param inliner: The inliner instance that called us.
+    :param options: Directive options for customization.
+    :param content: The directive content for customization.
+    """
+    app = inliner.document.settings.env.app
+    #app.info('user link %r' % text)
+    ref = 'https://www.github.com/' + text
+    node = nodes.reference(rawtext, text, refuri=ref, **options)
+    return [node], []
+
+def ghcommit_role(name, rawtext, text, lineno, inliner, options={}, content=[]):
+    """Link to a GitHub commit.
+
+    Returns 2 part tuple containing list of nodes to insert into the
+    document and a list of system messages.  Both are allowed to be
+    empty.
+
+    :param name: The role name used in the document.
+    :param rawtext: The entire markup snippet, with role.
+    :param text: The text marked with the role.
+    :param lineno: The line number where rawtext appears in the input.
+    :param inliner: The inliner instance that called us.
+    :param options: Directive options for customization.
+    :param content: The directive content for customization.
+    """
+    app = inliner.document.settings.env.app
+    #app.info('user link %r' % text)
+    try:
+        base = app.config.github_project_url
+        if not base:
+            raise AttributeError
+        if not base.endswith('/'):
+            base += '/'
+    except AttributeError as err:
+        raise ValueError('github_project_url configuration value is not set (%s)' % str(err))
+
+    ref = base + text
+    node = nodes.reference(rawtext, text[:6], refuri=ref, **options)
+    return [node], []
+
+
+def setup(app):
+    """Install the plugin.
+    
+    :param app: Sphinx application context.
+    """
+    app.info('Initializing GitHub plugin')
+    app.add_role('ghissue', ghissue_role)
+    app.add_role('ghpull', ghissue_role)
+    app.add_role('ghuser', ghuser_role)
+    app.add_role('ghcommit', ghcommit_role)
+    app.add_config_value('github_project_url', None, 'env')
+    return
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/README b/lldb/third_party/Python/module/pexpect-4.6/examples/README
new file mode 100644
index 00000000000..823cc6335a9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/README
@@ -0,0 +1,86 @@
+This directory contains scripts that give examples of using Pexpect.
+
+hive.py
+    This script creates SSH connections to a list of hosts that
+    you provide. Then you are given a command line prompt. Each
+    shell command that you enter is sent to all the hosts. The
+    response from each host is collected and printed. For example,
+    you could connect to a dozen different machines and reboot
+    them all at once.
+
+script.py
+    This implements a command similar to the classic BSD "script" command.
+    This will start a subshell and log all input and output to a file.
+    This demonstrates the interact() method of Pexpect.
+
+fix_cvs_files.py
+    This is for cleaning up binary files improperly added to
+    CVS. This script scans the given path to find binary files;
+    checks with CVS to see if the sticky options are set to -kb;
+    finally if sticky options are not -kb then uses 'cvs admin'
+    to set the -kb option.
+
+ftp.py
+    This demonstrates an FTP "bookmark".
+    This connects to an ftp site; does a few ftp commands; and then gives the user
+    interactive control over the session. In this case the "bookmark" is to a
+    directory on the OpenBSD ftp server. It puts you in the i386 packages
+    directory. You can easily modify this for other sites.
+    This demonstrates the interact() method of Pexpect.
+
+monitor.py
+    This runs a sequence of system status commands on a remote host using SSH.
+    It runs a simple system checks such as uptime and free to monitor
+    the state of the remote host.
+
+passmass.py
+    This will login to a list of hosts and change the password of the
+    given user. This demonstrates scripting logins; although, you could
+    more easily do this using the pxssh subclass of Pexpect.
+    See also the "hive.py" example script for a more general example
+    of scripting a collection of servers.
+
+python.py
+    This starts the python interpreter and prints the greeting message backwards.
+    It then gives the user interactive control of Python. It's pretty useless!
+
+rippy.py
+    This is a wizard for mencoder. It greatly simplifies the process of
+    ripping a DVD to mpeg4 format (XviD, DivX). It can transcode from any
+    video file to another. It has options for resampling the audio stream;
+    removing interlace artifacts, fitting to a target file size, etc.
+    There are lots of options, but the process is simple and easy to use.
+
+ssh_tunnel.py
+    This starts an SSH tunnel to a remote machine. It monitors the connection
+    and restarts the tunnel if it goes down.
+
+uptime.py
+    This will run the uptime command and parse the output into python variables.
+    This demonstrates using a single regular expression to match the output
+    of a command and capturing different variable in match groups.
+    The regular expression takes into account a wide variety of different
+    formats for uptime output.
+
+df.py
+    This collects filesystem capacity info using the 'df' command.
+    Tuples of filesystem name and percentage are stored in a list.
+    A simple report is printed. Filesystems over 95% capacity are highlighted.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/astat.py b/lldb/third_party/Python/module/pexpect-4.6/examples/astat.py
new file mode 100755
index 00000000000..abba1be22b9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/astat.py
@@ -0,0 +1,99 @@
+#!/usr/bin/env python
+
+'''This runs Apache Status on the remote host and returns the number of requests per second.
+
+./astat.py [-s server_hostname] [-u username] [-p password]
+    -s : hostname of the remote server to login to.
+    -u : username to user for login.
+    -p : Password to user for login.
+
+Example:
+    This will print information about the given host:
+        ./astat.py -s www.example.com -u mylogin -p mypassword
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import os
+import sys
+import getopt
+import getpass
+import pxssh
+
+
+try:
+    raw_input
+except NameError:
+    raw_input = input
+
+
+def exit_with_usage():
+
+    print(globals()['__doc__'])
+    os._exit(1)
+
+
+def main():
+
+    ######################################################################
+    ## Parse the options, arguments, get ready, etc.
+    ######################################################################
+    try:
+        optlist, args = getopt.getopt(sys.argv[1:], 'h?s:u:p:', ['help','h','?'])
+    except Exception as e:
+        print(str(e))
+        exit_with_usage()
+    options = dict(optlist)
+    if len(args) > 1:
+        exit_with_usage()
+
+    if [elem for elem in options if elem in ['-h','--h','-?','--?','--help']]:
+        print("Help:")
+        exit_with_usage()
+
+    if '-s' in options:
+        hostname = options['-s']
+    else:
+        hostname = raw_input('hostname: ')
+    if '-u' in options:
+        username = options['-u']
+    else:
+        username = raw_input('username: ')
+    if '-p' in options:
+        password = options['-p']
+    else:
+        password = getpass.getpass('password: ')
+
+    #
+    # Login via SSH
+    #
+    p = pxssh.pxssh()
+    p.login(hostname, username, password)
+    p.sendline('apachectl status')
+    p.expect(r'([0-9]+\.[0-9]+)\s*requests/sec')
+    requests_per_second = p.match.groups()[0]
+    p.logout()
+    print(requests_per_second)
+
+if __name__ == "__main__":
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/cgishell.cgi b/lldb/third_party/Python/module/pexpect-4.6/examples/cgishell.cgi
new file mode 100755
index 00000000000..57d8667eb91
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/cgishell.cgi
@@ -0,0 +1,766 @@
+#!/usr/bin/python
+##!/usr/bin/env python
+"""CGI shell server
+
+This exposes a shell terminal on a web page.
+It uses AJAX to send keys and receive screen updates.
+The client web browser needs nothing but CSS and Javascript.
+
+    --hostname : sets the remote host name to open an ssh connection to.
+    --username : sets the user name to login with
+    --password : (optional) sets the password to login with
+    --port     : set the local port for the server to listen on
+    --watch    : show the virtual screen after each client request
+
+This project is probably not the most security conscious thing I've ever built.
+This should be considered an experimental tool -- at best.
+"""
+
+from __future__ import absolute_import
+from __future__ import print_function
+
+import sys,os
+sys.path.insert (0,os.getcwd()) # let local modules precede any installed modules
+import socket, random, string, traceback, cgi, time, getopt, getpass, threading, resource, signal
+import pxssh, pexpect, ANSI
+
+def exit_with_usage(exit_code=1):
+    print(globals()['__doc__'])
+    os._exit(exit_code)
+
+def client (command, host='localhost', port=-1):
+    """This sends a request to the server and returns the response.
+    If port <= 0 then host is assumed to be the filename of a Unix domain socket.
+    If port > 0 then host is an inet hostname.
+    """
+    if port <= 0:
+        s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        s.connect(host)
+    else:
+        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        s.connect((host, port))
+    s.send(command)
+    data = s.recv (2500)
+    s.close()
+    return data
+
+def server (hostname, username, password, socket_filename='/tmp/server_sock', daemon_mode = True, verbose=False):
+    """This starts and services requests from a client.
+        If daemon_mode is True then this forks off a separate daemon process and returns the daemon's pid.
+        If daemon_mode is False then this does not return until the server is done.
+    """
+    if daemon_mode:
+        mypid_name = '/tmp/%d.pid' % os.getpid()
+        daemon_pid = daemonize(daemon_pid_filename=mypid_name)
+        time.sleep(1)
+        if daemon_pid != 0:
+            os.unlink(mypid_name)
+            return daemon_pid
+
+    virtual_screen = ANSI.ANSI (24,80) 
+    child = pxssh.pxssh()
+    try:
+        child.login (hostname, username, password, login_naked=True)
+    except:
+        return   
+    if verbose: print('login OK')
+    virtual_screen.write (child.before)
+    virtual_screen.write (child.after)
+
+    if os.path.exists(socket_filename): os.remove(socket_filename)
+    s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+    s.bind(socket_filename)
+    os.chmod(socket_filename, 0o777)
+    if verbose: print('Listen')
+    s.listen(1)
+
+    r = roller (endless_poll, (child, child.PROMPT, virtual_screen))
+    r.start()
+    if verbose: print("started screen-poll-updater in background thread")
+    sys.stdout.flush()
+    try:
+        while True:
+            conn, addr = s.accept()
+            if verbose: print('Connected by', addr)
+            data = conn.recv(1024)
+            request = data.split(' ', 1)
+            if len(request)>1:
+                cmd = request[0].strip()
+                arg = request[1].strip()
+            else:
+                cmd = request[0].strip()
+                arg = ''
+
+            if cmd == 'exit':
+                r.cancel()
+                break
+            elif cmd == 'sendline':
+                child.sendline (arg)
+                time.sleep(0.1)
+                shell_window = str(virtual_screen)
+            elif cmd == 'send' or cmd=='xsend':
+                if cmd=='xsend':
+                    arg = arg.decode("hex")
+                child.send (arg)
+                time.sleep(0.1)
+                shell_window = str(virtual_screen)
+            elif cmd == 'cursor':
+                shell_window = '%x,%x' % (virtual_screen.cur_r, virtual_screen.cur_c)
+            elif cmd == 'refresh':
+                shell_window = str(virtual_screen)
+            elif cmd == 'hash':
+                shell_window = str(hash(str(virtual_screen)))
+
+            response = []
+            response.append (shell_window)
+            if verbose: print('\n'.join(response))
+            sent = conn.send('\n'.join(response))
+            if sent < len (response):
+                if verbose: print("Sent is too short. Some data was cut off.")
+            conn.close()
+    except e:
+        pass
+    r.cancel()
+    if verbose: print("cleaning up socket")
+    s.close()
+    if os.path.exists(socket_filename): os.remove(socket_filename)
+    if verbose: print("server done!")
+
+class roller (threading.Thread):
+    """This class continuously loops a function in a thread.
+        This is basically a thin layer around Thread with a
+        while loop and a cancel.
+    """
+    def __init__(self, function, args=[], kwargs={}):
+        threading.Thread.__init__(self)
+        self.function = function
+        self.args = args
+        self.kwargs = kwargs
+        self.finished = threading.Event()
+    def cancel(self):
+        """Stop the roller."""
+        self.finished.set()
+    def run(self):
+        while not self.finished.isSet():
+            self.function(*self.args, **self.kwargs)
+
+def endless_poll (child, prompt, screen, refresh_timeout=0.1):
+    """This keeps the screen updated with the output of the child.
+        This will be run in a separate thread. See roller class.
+    """
+    #child.logfile_read = screen
+    try:
+        s = child.read_nonblocking(4000, 0.1)
+        screen.write(s)
+    except:
+        pass
+
+def daemonize (stdin=None, stdout=None, stderr=None, daemon_pid_filename=None):
+    """This runs the current process in the background as a daemon.
+    The arguments stdin, stdout, stderr allow you to set the filename that the daemon reads and writes to.
+    If they are set to None then all stdio for the daemon will be directed to /dev/null.
+    If daemon_pid_filename is set then the pid of the daemon will be written to it as plain text
+    and the pid will be returned. If daemon_pid_filename is None then this will return None.
+    """
+    UMASK = 0
+    WORKINGDIR = "/"
+    MAXFD = 1024
+
+    # The stdio file descriptors are redirected to /dev/null by default.
+    if hasattr(os, "devnull"):
+        DEVNULL = os.devnull
+    else:
+        DEVNULL = "/dev/null"
+    if stdin is None: stdin = DEVNULL
+    if stdout is None: stdout = DEVNULL
+    if stderr is None: stderr = DEVNULL
+
+    try:
+        pid = os.fork() # fork first child
+    except OSError as e:
+        raise Exception("%s [%d]" % (e.strerror, e.errno))
+
+    if pid != 0: 
+        os.waitpid(pid,0)
+        if daemon_pid_filename is not None:
+            daemon_pid = int(file(daemon_pid_filename,'r').read())
+            return daemon_pid
+        else:
+            return None
+
+    # first child
+    os.setsid()
+    signal.signal(signal.SIGHUP, signal.SIG_IGN)
+
+    try:
+        pid = os.fork() # fork second child
+    except OSError as e:
+        raise Exception("%s [%d]" % (e.strerror, e.errno))
+
+    if pid != 0:
+        if daemon_pid_filename is not None:
+            file(daemon_pid_filename,'w').write(str(pid))
+        os._exit(0) # exit parent (the first child) of the second child.
+
+    # second child
+    os.chdir(WORKINGDIR)
+    os.umask(UMASK)
+
+    maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
+    if maxfd == resource.RLIM_INFINITY:
+        maxfd = MAXFD
+  
+    # close all file descriptors
+    for fd in range(0, maxfd):
+        try:
+            os.close(fd)
+        except OSError:   # fd wasn't open to begin with (ignored)
+            pass
+
+    os.open (DEVNULL, os.O_RDWR)  # standard input
+
+    # redirect standard file descriptors
+    si = open(stdin, 'r')
+    so = open(stdout, 'a+')
+    se = open(stderr, 'a+', 0)
+    os.dup2(si.fileno(), sys.stdin.fileno())
+    os.dup2(so.fileno(), sys.stdout.fileno())
+    os.dup2(se.fileno(), sys.stderr.fileno())
+
+    return 0
+
+def client_cgi ():
+    """This handles the request if this script was called as a cgi.
+    """
+    sys.stderr = sys.stdout
+    ajax_mode = False
+    TITLE="Shell"
+    SHELL_OUTPUT=""
+    SID="NOT"
+    print("Content-type: text/html;charset=utf-8\r\n")
+    try:
+        form = cgi.FieldStorage()
+        if 'ajax' in form:
+            ajax_mode = True
+            ajax_cmd = form['ajax'].value
+            SID=form['sid'].value
+            if ajax_cmd == 'send':
+                command = 'xsend'
+                arg = form['arg'].value.encode('hex')
+                result = client (command + ' ' + arg, '/tmp/'+SID)
+                print(result)
+            elif ajax_cmd == 'refresh':
+                command = 'refresh'
+                result = client (command, '/tmp/'+SID)
+                print(result)
+            elif ajax_cmd == 'cursor':
+                command = 'cursor'
+                result = client (command, '/tmp/'+SID)
+                print(result)
+            elif ajax_cmd == 'exit':
+                command = 'exit'
+                result = client (command, '/tmp/'+SID)
+                print(result)
+            elif ajax_cmd == 'hash':
+                command = 'hash'
+                result = client (command, '/tmp/'+SID)
+                print(result)
+        elif 'sid' not in form:
+            SID=random_sid()
+            print(LOGIN_HTML % locals());
+        else:
+            SID=form['sid'].value
+            if 'start_server' in form:
+                USERNAME = form['username'].value
+                PASSWORD = form['password'].value
+                dpid = server ('127.0.0.1', USERNAME, PASSWORD, '/tmp/'+SID)
+                SHELL_OUTPUT="daemon pid: " + str(dpid)
+            else:
+                if 'cli' in form:
+                    command = 'sendline ' + form['cli'].value
+                else:
+                    command = 'sendline'
+                SHELL_OUTPUT = client (command, '/tmp/'+SID)
+            print(CGISH_HTML % locals())
+    except:
+        tb_dump = traceback.format_exc()
+        if ajax_mode:
+            print(str(tb_dump))
+        else:
+            SHELL_OUTPUT=str(tb_dump)
+            print(CGISH_HTML % locals())
+
+def server_cli():
+    """This is the command line interface to starting the server.
+    This handles things if the script was not called as a CGI
+    (if you run it from the command line).
+    """
+    try:
+        optlist, args = getopt.getopt(sys.argv[1:], 'h?d', ['help','h','?', 'hostname=', 'username=', 'password=', 'port=', 'watch'])
+    except Exception as e:
+        print(str(e))
+        exit_with_usage()
+
+    command_line_options = dict(optlist)
+    options = dict(optlist)
+    # There are a million ways to cry for help. These are but a few of them.
+    if [elem for elem in command_line_options if elem in ['-h','--h','-?','--?','--help']]:
+        exit_with_usage(0)
+  
+    hostname = "127.0.0.1"
+    #port = 1664
+    username = os.getenv('USER')
+    password = ""
+    daemon_mode = False
+    if '-d' in options:
+        daemon_mode = True
+    if '--watch' in options:
+        watch_mode = True
+    else:
+        watch_mode = False
+    if '--hostname' in options:
+        hostname = options['--hostname']
+    if '--port' in options:
+        port = int(options['--port'])
+    if '--username' in options:
+        username = options['--username']
+    if '--password' in options:
+        password = options['--password']
+    else:
+        password = getpass.getpass('password: ')
+   
+    server (hostname, username, password, '/tmp/mysock', daemon_mode)
+
+def random_sid ():
+    a=random.randint(0,65535)
+    b=random.randint(0,65535)
+    return '%04x%04x.sid' % (a,b)
+
+def parse_host_connect_string (hcs):
+    """This parses a host connection string in the form
+    username:password@hostname:port. All fields are options expcet hostname. A
+    dictionary is returned with all four keys. Keys that were not included are
+    set to empty strings ''. Note that if your password has the '@' character
+    then you must backslash escape it.
+    """
+    if '@' in hcs:
+        p = re.compile (r'(?P<username>[^@:]*)(:?)(?P<password>.*)(?!\\)@(?P<hostname>[^:]*):?(?P<port>[0-9]*)')
+    else:
+        p = re.compile (r'(?P<username>)(?P<password>)(?P<hostname>[^:]*):?(?P<port>[0-9]*)')
+    m = p.search (hcs)
+    d = m.groupdict()
+    d['password'] = d['password'].replace('\\@','@')
+    return d
+     
+def pretty_box (s, rows=24, cols=80):
+    """This puts an ASCII text box around the given string.
+    """
+    top_bot = '+' + '-'*cols + '+\n'
+    return top_bot + '\n'.join(['|'+line+'|' for line in s.split('\n')]) + '\n' + top_bot
+
+def main ():
+    if os.getenv('REQUEST_METHOD') is None:
+        server_cli()
+    else:
+        client_cgi()
+
+# It's mostly HTML and Javascript from here on out.
+CGISH_HTML="""<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+<head>
+<title>%(TITLE)s %(SID)s</title>
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+<style type=text/css>
+a {color: #9f9; text-decoration: none}
+a:hover {color: #0f0}
+hr {color: #0f0}
+html,body,textarea,input,form
+{
+font-family: "Courier New", Courier, mono; 
+font-size: 8pt; 
+color: #0c0;
+background-color: #020;
+margin:0;
+padding:0;
+border:0;
+}
+input { background-color: #010; }
+textarea {
+border-width:1;
+border-style:solid;
+border-color:#0c0;
+padding:3;
+margin:3;
+}
+</style>
+
+<script language="JavaScript">
+function focus_first()
+{if (document.forms.length > 0)
+{var TForm = document.forms[0];
+for (i=0;i<TForm.length;i++){
+if ((TForm.elements[i].type=="text")||
+(TForm.elements[i].type=="textarea")||
+(TForm.elements[i].type.toString().charAt(0)=="s"))
+{document.forms[0].elements[i].focus();break;}}}}
+
+// JavaScript Virtual Keyboard
+// If you like this code then buy me a sandwich.
+// Noah Spurrier <noah@noah.org>
+var flag_shift=0;
+var flag_shiftlock=0;
+var flag_ctrl=0;
+var ButtonOnColor="#ee0";
+
+function init ()
+{
+    // hack to set quote key to show both single quote and double quote
+    document.form['quote'].value = "'" + '  "';
+    //refresh_screen();
+    poll();
+    document.form["cli"].focus();
+}
+function get_password ()
+{
+    var username = prompt("username?","");
+    var password = prompt("password?","");
+    start_server (username, password);
+}
+function multibrowser_ajax ()
+{
+    var xmlHttp = false;
+/*@cc_on @*/
+/*@if (@_jscript_version >= 5)
+    try
+    {
+        xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
+    }
+    catch (e)
+    {
+        try
+        {
+            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
+        }
+        catch (e2)
+        {
+              xmlHttp = false;
+        }
+    }
+@end @*/
+
+    if (!xmlHttp && typeof XMLHttpRequest != 'undefined')
+    {
+        xmlHttp = new XMLHttpRequest();
+    }
+    return xmlHttp;
+}
+function load_url_to_screen(url)
+{ 
+    xmlhttp = multibrowser_ajax();
+    //window.XMLHttpRequest?new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");
+    xmlhttp.onreadystatechange = update_virtual_screen;
+    xmlhttp.open("GET", url);
+    xmlhttp.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT");
+    xmlhttp.send(null);
+}
+function update_virtual_screen()
+{
+    if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200))
+    {
+        var screen_text = xmlhttp.responseText;
+        document.form["screen_text"].value = screen_text;
+        //var json_data = json_parse(xmlhttp.responseText);
+    }
+}
+function poll()
+{
+    refresh_screen();
+    timerID  = setTimeout("poll()", 2000);
+    // clearTimeout(timerID);
+}
+//function start_server (username, password)
+//{
+//    load_url_to_screen('cgishell.cgi?ajax=serverstart&username=' + escape(username) + '&password=' + escape(password);
+//}
+function refresh_screen()
+{
+    load_url_to_screen('cgishell.cgi?ajax=refresh&sid=%(SID)s');
+}
+function query_hash()
+{
+    load_url_to_screen('cgishell.cgi?ajax=hash&sid=%(SID)s');
+}
+function query_cursor()
+{
+    load_url_to_screen('cgishell.cgi?ajax=cursor&sid=%(SID)s');
+}
+function exit_server()
+{
+    load_url_to_screen('cgishell.cgi?ajax=exit&sid=%(SID)s');
+}
+function type_key (chars)
+{
+    var ch = '?';
+    if (flag_shiftlock || flag_shift)
+    {
+        ch = chars.substr(1,1);
+    }
+    else if (flag_ctrl)
+    {
+        ch = chars.substr(2,1);
+    }
+    else
+    {
+        ch = chars.substr(0,1);
+    }
+    load_url_to_screen('cgishell.cgi?ajax=send&sid=%(SID)s&arg=' + escape(ch));
+    if (flag_shift || flag_ctrl)
+    {
+        flag_shift = 0;
+        flag_ctrl = 0;
+    }
+    update_button_colors();
+}
+
+function key_shiftlock()
+{
+    flag_ctrl = 0;
+    flag_shift = 0;
+    if (flag_shiftlock)
+    {
+        flag_shiftlock = 0;
+    }
+    else
+    {
+        flag_shiftlock = 1;
+    }
+    update_button_colors();
+}
+
+function key_shift()
+{
+    if (flag_shift)
+    {
+        flag_shift = 0;
+    }
+    else
+    {
+        flag_ctrl = 0;
+        flag_shiftlock = 0;
+        flag_shift = 1;
+    }
+    update_button_colors(); 
+}
+function key_ctrl ()
+{
+    if (flag_ctrl)
+    {
+        flag_ctrl = 0;
+    }
+    else
+    {
+        flag_ctrl = 1;
+        flag_shiftlock = 0;
+        flag_shift = 0;
+    }
+    
+    update_button_colors();
+}
+function update_button_colors ()
+{
+    if (flag_ctrl)
+    {
+        document.form['Ctrl'].style.backgroundColor = ButtonOnColor;
+        document.form['Ctrl2'].style.backgroundColor = ButtonOnColor;
+    }
+    else
+    {
+        document.form['Ctrl'].style.backgroundColor = document.form.style.backgroundColor;
+        document.form['Ctrl2'].style.backgroundColor = document.form.style.backgroundColor;
+    }
+    if (flag_shift)
+    {
+        document.form['Shift'].style.backgroundColor = ButtonOnColor;
+        document.form['Shift2'].style.backgroundColor = ButtonOnColor;
+    }
+    else
+    {
+        document.form['Shift'].style.backgroundColor = document.form.style.backgroundColor;
+        document.form['Shift2'].style.backgroundColor = document.form.style.backgroundColor;
+    }
+    if (flag_shiftlock)
+    {
+        document.form['ShiftLock'].style.backgroundColor = ButtonOnColor;
+    }
+    else
+    {
+        document.form['ShiftLock'].style.backgroundColor = document.form.style.backgroundColor;
+    }
+    
+}
+function keyHandler(e)
+{
+    var pressedKey;
+    if (document.all)    { e = window.event; }
+    if (document.layers) { pressedKey = e.which; }
+    if (document.all)    { pressedKey = e.keyCode; }
+    pressedCharacter = String.fromCharCode(pressedKey);
+    type_key(pressedCharacter+pressedCharacter+pressedCharacter);
+    alert(pressedCharacter);
+//    alert(' Character = ' + pressedCharacter + ' [Decimal value = ' + pressedKey + ']');
+}
+//document.onkeypress = keyHandler;
+//if (document.layers)
+//    document.captureEvents(Event.KEYPRESS);
+//http://sniptools.com/jskeys
+//document.onkeyup = KeyCheck;       
+function KeyCheck(e)
+{
+    var KeyID = (window.event) ? event.keyCode : e.keyCode;
+    type_key(String.fromCharCode(KeyID));
+    e.cancelBubble = true;
+    window.event.cancelBubble = true;
+}
+</script>
+
+</head>
+
+<body onload="init()">
+<form id="form" name="form" action="/cgi-bin/cgishell.cgi" method="POST">
+<input name="sid" value="%(SID)s" type="hidden">
+<textarea name="screen_text" cols="81" rows="25">%(SHELL_OUTPUT)s</textarea>
+<hr noshade="1">
+&nbsp;<input name="cli" id="cli" type="text" size="80"><br>
+<table border="0" align="left">
+<tr>
+<td width="86%%" align="center">    
+    <input name="submit" type="submit" value="Submit">
+    <input name="refresh" type="button" value="REFRESH" onclick="refresh_screen()">
+    <input name="refresh" type="button" value="CURSOR" onclick="query_cursor()">
+    <input name="hash" type="button" value="HASH" onclick="query_hash()">
+    <input name="exit" type="button" value="EXIT" onclick="exit_server()">
+    <br>
+    <input type="button" value="Esc" onclick="type_key('\\x1b\\x1b')" />
+    <input type="button" value="` ~" onclick="type_key('`~')" />
+    <input type="button" value="1!" onclick="type_key('1!')" />
+    <input type="button" value="2@" onclick="type_key('2@\\x00')" />
+    <input type="button" value="3#" onclick="type_key('3#')" />
+    <input type="button" value="4$" onclick="type_key('4$')" />
+    <input type="button" value="5%%" onclick="type_key('5%%')" />
+    <input type="button" value="6^" onclick="type_key('6^\\x1E')" />
+    <input type="button" value="7&" onclick="type_key('7&')" />
+    <input type="button" value="8*" onclick="type_key('8*')" />
+    <input type="button" value="9(" onclick="type_key('9(')" />
+    <input type="button" value="0)" onclick="type_key('0)')" />
+    <input type="button" value="-_" onclick="type_key('-_\\x1F')" />
+    <input type="button" value="=+" onclick="type_key('=+')" />
+    <input type="button" value="BkSp" onclick="type_key('\\x08\\x08\\x08')" />
+    <br>
+    <input type="button" value="Tab" onclick="type_key('\\t\\t')" />
+    <input type="button" value="Q" onclick="type_key('qQ\\x11')" />
+    <input type="button" value="W" onclick="type_key('wW\\x17')" />
+    <input type="button" value="E" onclick="type_key('eE\\x05')" />
+    <input type="button" value="R" onclick="type_key('rR\\x12')" />
+    <input type="button" value="T" onclick="type_key('tT\\x14')" />
+    <input type="button" value="Y" onclick="type_key('yY\\x19')" />
+    <input type="button" value="U" onclick="type_key('uU\\x15')" />
+    <input type="button" value="I" onclick="type_key('iI\\x09')" />
+    <input type="button" value="O" onclick="type_key('oO\\x0F')" />
+    <input type="button" value="P" onclick="type_key('pP\\x10')" />
+    <input type="button" value="[ {" onclick="type_key('[{\\x1b')" />
+    <input type="button" value="] }" onclick="type_key(']}\\x1d')" />
+    <input type="button" value="\\ |" onclick="type_key('\\\\|\\x1c')" />
+    <br>
+    <input type="button" id="Ctrl" value="Ctrl" onclick="key_ctrl()" />
+    <input type="button" value="A" onclick="type_key('aA\\x01')" />
+    <input type="button" value="S" onclick="type_key('sS\\x13')" />
+    <input type="button" value="D" onclick="type_key('dD\\x04')" />
+    <input type="button" value="F" onclick="type_key('fF\\x06')" />
+    <input type="button" value="G" onclick="type_key('gG\\x07')" />
+    <input type="button" value="H" onclick="type_key('hH\\x08')" />
+    <input type="button" value="J" onclick="type_key('jJ\\x0A')" />
+    <input type="button" value="K" onclick="type_key('kK\\x0B')" />
+    <input type="button" value="L" onclick="type_key('lL\\x0C')" />
+    <input type="button" value="; :" onclick="type_key(';:')" />
+    <input type="button" id="quote" value="'" onclick="type_key('\\x27\\x22')" />
+    <input type="button" value="Enter" onclick="type_key('\\n\\n')" />
+    <br>
+    <input type="button" id="ShiftLock" value="Caps Lock" onclick="key_shiftlock()" />
+    <input type="button" id="Shift" value="Shift" onclick="key_shift()"  />
+    <input type="button" value="Z" onclick="type_key('zZ\\x1A')" />
+    <input type="button" value="X" onclick="type_key('xX\\x18')" />
+    <input type="button" value="C" onclick="type_key('cC\\x03')" />
+    <input type="button" value="V" onclick="type_key('vV\\x16')" />
+    <input type="button" value="B" onclick="type_key('bB\\x02')" />
+    <input type="button" value="N" onclick="type_key('nN\\x0E')" />
+    <input type="button" value="M" onclick="type_key('mM\\x0D')" />
+    <input type="button" value=", <" onclick="type_key(',<')" />
+    <input type="button" value=". >" onclick="type_key('.>')" />
+    <input type="button" value="/ ?" onclick="type_key('/?')" />
+    <input type="button" id="Shift2" value="Shift" onclick="key_shift()" />
+    <input type="button" id="Ctrl2" value="Ctrl" onclick="key_ctrl()" />
+    <br>
+    <input type="button" value="        FINAL FRONTIER        " onclick="type_key('  ')" />
+</td>
+</tr>
+</table>  
+</form>
+</body>
+</html>
+"""
+
+LOGIN_HTML="""<html>
+<head>
+<title>Shell Login</title>
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+<style type=text/css>
+a {color: #9f9; text-decoration: none}
+a:hover {color: #0f0}
+hr {color: #0f0}
+html,body,textarea,input,form
+{
+font-family: "Courier New", Courier, mono;
+font-size: 8pt;
+color: #0c0;
+background-color: #020;
+margin:3;
+padding:0;
+border:0;
+}
+input { background-color: #010; }
+input,textarea {
+border-width:1;
+border-style:solid;
+border-color:#0c0;
+padding:3;
+margin:3;
+}
+</style>
+<script language="JavaScript">
+function init ()
+{
+    document.login_form["username"].focus();
+}
+</script>
+</head>
+<body onload="init()">
+<form name="login_form" method="POST">
+<input name="start_server" value="1" type="hidden">
+<input name="sid" value="%(SID)s" type="hidden">
+username: <input name="username" type="text" size="30"><br>
+password: <input name="password" type="password" size="30"><br>
+<input name="submit" type="submit" value="enter">
+</form>
+<br>
+</body>
+</html>
+"""
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as e:
+        print(str(e))
+        tb_dump = traceback.format_exc()
+        print(str(tb_dump))
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/chess.py b/lldb/third_party/Python/module/pexpect-4.6/examples/chess.py
new file mode 100755
index 00000000000..f97a3a9ef26
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/chess.py
@@ -0,0 +1,148 @@
+#!/usr/bin/env python
+
+'''This demonstrates controlling a screen oriented application (curses).
+It starts two instances of gnuchess and then pits them against each other.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import pexpect
+import ANSI
+
+REGEX_MOVE = r'(?:[a-z]|\x1b\[C)(?:[0-9]|\x1b\[C)(?:[a-z]|\x1b\[C)(?:[0-9]|\x1b\[C)'
+REGEX_MOVE_PART = r'(?:[0-9]|\x1b\[C)(?:[a-z]|\x1b\[C)(?:[0-9]|\x1b\[C)'
+
+class Chess:
+
+    def __init__(self, engine = "/usr/local/bin/gnuchess -a -h 1"):
+        self.child = pexpect.spawn (engine)
+        self.term = ANSI.ANSI ()
+
+        self.child.expect ('Chess')
+        if self.child.after != 'Chess':
+            raise IOError('incompatible chess program')
+        self.term.process_list (self.before)
+        self.term.process_list (self.after)
+        self.last_computer_move = ''
+
+    def read_until_cursor (self, r,c):
+        while 1:
+            self.child.read(1, 60)
+            self.term.process (c)
+            if self.term.cur_r == r and self.term.cur_c == c:
+                return 1
+
+    def do_first_move (self, move):
+        self.child.expect ('Your move is')
+        self.child.sendline (move)
+        self.term.process_list (self.before)
+        self.term.process_list (self.after)
+        return move
+
+    def do_move (self, move):
+        self.read_until_cursor (19,60)
+        self.child.sendline (move)
+        return move
+
+    def get_first_computer_move (self):
+        self.child.expect ('My move is')
+        self.child.expect (REGEX_MOVE)
+        return self.child.after
+
+    def get_computer_move (self):
+        print('Here')
+        i = self.child.expect ([r'\[17;59H', r'\[17;58H'])
+        print(i)
+        if i == 0:
+            self.child.expect (REGEX_MOVE)
+            if len(self.child.after) < 4:
+                self.child.after = self.child.after + self.last_computer_move[3]
+        if i == 1:
+            self.child.expect (REGEX_MOVE_PART)
+            self.child.after = self.last_computer_move[0] + self.child.after
+        print('', self.child.after)
+        self.last_computer_move = self.child.after
+        return self.child.after
+
+    def switch (self):
+        self.child.sendline ('switch')
+
+    def set_depth (self, depth):
+        self.child.sendline ('depth')
+        self.child.expect ('depth=')
+        self.child.sendline ('%d' % depth)
+
+    def quit(self):
+        self.child.sendline ('quit')
+import sys
+print('Starting...')
+white = Chess()
+white.child.echo = 1
+white.child.expect ('Your move is')
+white.set_depth(2)
+white.switch()
+
+move_white = white.get_first_computer_move()
+print('first move white:', move_white)
+
+white.do_move ('e7e5')
+move_white = white.get_computer_move()
+print('move white:', move_white)
+white.do_move ('f8c5')
+move_white = white.get_computer_move()
+print('move white:', move_white)
+white.do_move ('b8a6')
+move_white = white.get_computer_move()
+print('move white:', move_white)
+
+sys.exit(1)
+
+
+
+black = Chess()
+white = Chess()
+white.child.expect ('Your move is')
+white.switch()
+
+move_white = white.get_first_computer_move()
+print('first move white:', move_white)
+
+black.do_first_move (move_white)
+move_black = black.get_first_computer_move()
+print('first move black:', move_black)
+
+white.do_move (move_black)
+
+done = 0
+while not done:
+    move_white = white.get_computer_move()
+    print('move white:', move_white)
+
+    black.do_move (move_white)
+    move_black = black.get_computer_move()
+    print('move black:', move_black)
+
+    white.do_move (move_black)
+    print('tail of loop')
+
+g.quit()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/chess2.py b/lldb/third_party/Python/module/pexpect-4.6/examples/chess2.py
new file mode 100755
index 00000000000..b92509e776f
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/chess2.py
@@ -0,0 +1,153 @@
+#!/usr/bin/env python
+
+'''This demonstrates controlling a screen oriented application (curses).
+It starts two instances of gnuchess and then pits them against each other.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import pexpect
+import ANSI
+import sys
+import time
+
+class Chess:
+
+        def __init__(self, engine = "/usr/local/bin/gnuchess -a -h 1"):
+                self.child = pexpect.spawn (engine)
+                self.term = ANSI.ANSI ()
+
+                #self.child.expect ('Chess')
+                #if self.child.after != 'Chess':
+                #        raise IOError, 'incompatible chess program'
+                #self.term.process_list (self.child.before)
+                #self.term.process_list (self.child.after)
+
+                self.last_computer_move = ''
+
+        def read_until_cursor (self, r,c, e=0):
+            '''Eventually something like this should move into the screen class or
+            a subclass. Maybe a combination of pexpect and screen...
+            '''
+            fout = open ('log','a')
+            while self.term.cur_r != r or self.term.cur_c != c:
+                try:
+                    k = self.child.read(1, 10)
+                except Exception as e:
+                    print('EXCEPTION, (r,c):(%d,%d)\n' %(self.term.cur_r, self.term.cur_c))
+                    sys.stdout.flush()
+                self.term.process (k)
+                fout.write ('(r,c):(%d,%d)\n' %(self.term.cur_r, self.term.cur_c))
+                fout.flush()
+                if e:
+                    sys.stdout.write (k)
+                    sys.stdout.flush()
+                if self.term.cur_r == r and self.term.cur_c == c:
+                    fout.close()
+                    return 1
+            print('DIDNT EVEN HIT.')
+            fout.close()
+            return 1
+
+        def expect_region (self):
+            '''This is another method that would be moved into the
+            screen class.
+            '''
+            pass
+        def do_scan (self):
+            fout = open ('log','a')
+            while 1:
+                c = self.child.read(1,10)
+                self.term.process (c)
+                fout.write ('(r,c):(%d,%d)\n' %(self.term.cur_r, self.term.cur_c))
+                fout.flush()
+                sys.stdout.write (c)
+                sys.stdout.flush()
+
+        def do_move (self, move, e = 0):
+                time.sleep(1)
+                self.read_until_cursor (19,60, e)
+                self.child.sendline (move)
+
+        def wait (self, color):
+            while 1:
+                r = self.term.get_region (14,50,14,60)[0]
+                r = r.strip()
+                if r == color:
+                    return
+                time.sleep (1)
+
+        def parse_computer_move (self, s):
+                i = s.find ('is: ')
+                cm = s[i+3:i+9]
+                return cm
+        def get_computer_move (self, e = 0):
+                time.sleep(1)
+                self.read_until_cursor (19,60, e)
+                time.sleep(1)
+                r = self.term.get_region (17,50,17,62)[0]
+                cm = self.parse_computer_move (r)
+                return cm
+
+        def switch (self):
+                print('switching')
+                self.child.sendline ('switch')
+
+        def set_depth (self, depth):
+                self.child.sendline ('depth')
+                self.child.expect ('depth=')
+                self.child.sendline ('%d' % depth)
+
+        def quit(self):
+                self.child.sendline ('quit')
+
+def LOG (s):
+    print(s)
+    sys.stdout.flush ()
+    fout = open ('moves.log', 'a')
+    fout.write (s + '\n')
+    fout.close()
+
+print('Starting...')
+
+black = Chess()
+white = Chess()
+white.read_until_cursor (19,60,1)
+white.switch()
+
+done = 0
+while not done:
+    white.wait ('Black')
+    move_white = white.get_computer_move(1)
+    LOG ( 'move white:'+ move_white )
+
+    black.do_move (move_white)
+    black.wait ('White')
+    move_black = black.get_computer_move()
+    LOG ( 'move black:'+ move_black )
+
+    white.do_move (move_black, 1)
+
+g.quit()
+
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/chess3.py b/lldb/third_party/Python/module/pexpect-4.6/examples/chess3.py
new file mode 100755
index 00000000000..2c087b039d9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/chess3.py
@@ -0,0 +1,157 @@
+#!/usr/bin/env python
+
+'''This demonstrates controlling a screen oriented application (curses).
+It starts two instances of gnuchess and then pits them against each other.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import pexpect
+import ANSI
+
+REGEX_MOVE = r'(?:[a-z]|\x1b\[C)(?:[0-9]|\x1b\[C)(?:[a-z]|\x1b\[C)(?:[0-9]|\x1b\[C)'
+REGEX_MOVE_PART = r'(?:[0-9]|\x1b\[C)(?:[a-z]|\x1b\[C)(?:[0-9]|\x1b\[C)'
+
+class Chess:
+
+    def __init__(self, engine = "/usr/local/bin/gnuchess -a -h 1"):
+        self.child = pexpect.spawn (engine)
+        self.term = ANSI.ANSI ()
+
+#		self.child.expect ('Chess')
+    #	if self.child.after != 'Chess':
+    #		raise IOError, 'incompatible chess program'
+    #        self.term.process_list (self.before)
+    #        self.term.process_list (self.after)
+        self.last_computer_move = ''
+    def read_until_cursor (self, r,c):
+        fout = open ('log','a')
+        while 1:
+            k = self.child.read(1, 10)
+            self.term.process (k)
+            fout.write ('(r,c):(%d,%d)\n' %(self.term.cur_r, self.term.cur_c))
+            fout.flush()
+            if self.term.cur_r == r and self.term.cur_c == c:
+                fout.close()
+                return 1
+            sys.stdout.write (k)
+            sys.stdout.flush()
+
+    def do_scan (self):
+        fout = open ('log','a')
+        while 1:
+            c = self.child.read(1,10)
+            self.term.process (c)
+            fout.write ('(r,c):(%d,%d)\n' %(self.term.cur_r, self.term.cur_c))
+            fout.flush()
+            sys.stdout.write (c)
+            sys.stdout.flush()
+
+    def do_move (self, move):
+        self.read_until_cursor (19,60)
+        self.child.sendline (move)
+        return move
+
+    def get_computer_move (self):
+        print('Here')
+        i = self.child.expect ([r'\[17;59H', r'\[17;58H'])
+        print(i)
+        if i == 0:
+            self.child.expect (REGEX_MOVE)
+            if len(self.child.after) < 4:
+                self.child.after = self.child.after + self.last_computer_move[3]
+        if i == 1:
+            self.child.expect (REGEX_MOVE_PART)
+            self.child.after = self.last_computer_move[0] + self.child.after
+        print('', self.child.after)
+        self.last_computer_move = self.child.after
+        return self.child.after
+
+    def switch (self):
+        self.child.sendline ('switch')
+
+    def set_depth (self, depth):
+        self.child.sendline ('depth')
+        self.child.expect ('depth=')
+        self.child.sendline ('%d' % depth)
+
+    def quit(self):
+        self.child.sendline ('quit')
+import sys
+print('Starting...')
+white = Chess()
+white.do_move('b2b4')
+white.read_until_cursor (19,60)
+c1 = white.term.get_abs(17,58)
+c2 = white.term.get_abs(17,59)
+c3 = white.term.get_abs(17,60)
+c4 = white.term.get_abs(17,61)
+fout = open ('log','a')
+fout.write ('Computer:%s%s%s%s\n' %(c1,c2,c3,c4))
+fout.close()
+white.do_move('c2c4')
+white.read_until_cursor (19,60)
+c1 = white.term.get_abs(17,58)
+c2 = white.term.get_abs(17,59)
+c3 = white.term.get_abs(17,60)
+c4 = white.term.get_abs(17,61)
+fout = open ('log','a')
+fout.write ('Computer:%s%s%s%s\n' %(c1,c2,c3,c4))
+fout.close()
+white.do_scan ()
+
+#white.do_move ('b8a6')
+#move_white = white.get_computer_move()
+#print 'move white:', move_white
+
+sys.exit(1)
+
+
+
+black = Chess()
+white = Chess()
+white.child.expect ('Your move is')
+white.switch()
+
+move_white = white.get_first_computer_move()
+print('first move white:', move_white)
+
+black.do_first_move (move_white)
+move_black = black.get_first_computer_move()
+print('first move black:', move_black)
+
+white.do_move (move_black)
+
+done = 0
+while not done:
+    move_white = white.get_computer_move()
+    print('move white:', move_white)
+
+    black.do_move (move_white)
+    move_black = black.get_computer_move()
+    print('move black:', move_black)
+
+    white.do_move (move_black)
+    print('tail of loop')
+
+g.quit()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/df.py b/lldb/third_party/Python/module/pexpect-4.6/examples/df.py
new file mode 100755
index 00000000000..f8e3fc3989b
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/df.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+
+'''This collects filesystem capacity info using the 'df' command. Tuples of
+filesystem name and percentage are stored in a list. A simple report is
+printed. Filesystems over 95% capacity are highlighted. Note that this does not
+parse filesystem names after the first space, so names with spaces in them will
+be truncated. This will produce ambiguous results for automount filesystems on
+Apple OSX.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import pexpect
+
+child = pexpect.spawn ('df')
+
+# parse 'df' output into a list.
+pattern = r"\n(\S+).*?([0-9]+)%"
+filesystem_list = []
+for dummy in range (0, 1000):
+    i = child.expect ([pattern, pexpect.EOF])
+    if i == 0:
+        filesystem_list.append (child.match.groups())
+    else:
+        break
+
+# Print report
+print()
+for m in filesystem_list:
+    s = "Filesystem %s is at %s%%" % (m[0], m[1])
+    # highlight filesystems over 95% capacity
+    if int(m[1]) > 95:
+        s = '! ' + s
+    else:
+        s = '  ' + s
+    print(s)
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/ftp.py b/lldb/third_party/Python/module/pexpect-4.6/examples/ftp.py
new file mode 100755
index 00000000000..a1c1343a7de
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/ftp.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+
+'''This demonstrates an FTP "bookmark". This connects to an ftp site; does a
+few ftp stuff; and then gives the user interactive control over the session. In
+this case the "bookmark" is to a directory on the OpenBSD ftp server. It puts
+you in the i386 packages directory. You can easily modify this for other sites.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import absolute_import
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import pexpect
+import sys
+
+# Note that, for Python 3 compatibility reasons, we are using spawnu and
+# importing unicode_literals (above). spawnu accepts Unicode input and
+# unicode_literals makes all string literals in this script Unicode by default.
+child = pexpect.spawnu('ftp ftp.openbsd.org')
+
+child.expect('(?i)name .*: ')
+child.sendline('anonymous')
+child.expect('(?i)password')
+child.sendline('pexpect@sourceforge.net')
+child.expect('ftp> ')
+child.sendline('cd /pub/OpenBSD/3.7/packages/i386')
+child.expect('ftp> ')
+child.sendline('bin')
+child.expect('ftp> ')
+child.sendline('prompt')
+child.expect('ftp> ')
+child.sendline('pwd')
+child.expect('ftp> ')
+print("Escape character is '^]'.\n")
+sys.stdout.write (child.after)
+sys.stdout.flush()
+child.interact() # Escape character defaults to ^]
+# At this point this script blocks until the user presses the escape character
+# or until the child exits. The human user and the child should be talking
+# to each other now.
+
+# At this point the script is running again.
+print('Left interactve mode.')
+
+# The rest is not strictly necessary. This just demonstrates a few functions.
+# This makes sure the child is dead; although it would be killed when Python exits.
+if child.isalive():
+    child.sendline('bye') # Try to ask ftp child to exit.
+    child.close()
+# Print the final state of the child. Normally isalive() should be FALSE.
+if child.isalive():
+    print('Child did not exit gracefully.')
+else:
+    print('Child exited gracefully.')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/hive.py b/lldb/third_party/Python/module/pexpect-4.6/examples/hive.py
new file mode 100755
index 00000000000..1b7bcbf2416
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/hive.py
@@ -0,0 +1,466 @@
+#!/usr/bin/env python
+
+'''hive -- Hive Shell
+
+This lets you ssh to a group of servers and control them as if they were one.
+Each command you enter is sent to each host in parallel. The response of each
+host is collected and printed. In normal synchronous mode Hive will wait for
+each host to return the shell command line prompt. The shell prompt is used to
+sync output.
+
+Example:
+
+    $ hive.py --sameuser --samepass host1.example.com host2.example.net
+    username: myusername
+    password:
+    connecting to host1.example.com - OK
+    connecting to host2.example.net - OK
+    targeting hosts: 192.168.1.104 192.168.1.107
+    CMD (? for help) > uptime
+    =======================================================================
+    host1.example.com
+    -----------------------------------------------------------------------
+    uptime
+    23:49:55 up 74 days,  5:14,  2 users,  load average: 0.15, 0.05, 0.01
+    =======================================================================
+    host2.example.net
+    -----------------------------------------------------------------------
+    uptime
+    23:53:02 up 1 day, 13:36,  2 users,  load average: 0.50, 0.40, 0.46
+    =======================================================================
+
+Other Usage Examples:
+
+1. You will be asked for your username and password for each host.
+
+    hive.py host1 host2 host3 ... hostN
+
+2. You will be asked once for your username and password.
+   This will be used for each host.
+
+    hive.py --sameuser --samepass host1 host2 host3 ... hostN
+
+3. Give a username and password on the command-line:
+
+    hive.py user1:pass2@host1 user2:pass2@host2 ... userN:passN@hostN
+
+You can use an extended host notation to specify username, password, and host
+instead of entering auth information interactively. Where you would enter a
+host name use this format:
+
+    username:password@host
+
+This assumes that ':' is not part of the password. If your password contains a
+':' then you can use '\\:' to indicate a ':' and '\\\\' to indicate a single
+'\\'. Remember that this information will appear in the process listing. Anyone
+on your machine can see this auth information. This is not secure.
+
+This is a crude script that begs to be multithreaded. But it serves its
+purpose.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+# TODO add feature to support username:password@host combination
+# TODO add feature to log each host output in separate file
+
+import sys
+import os
+import re
+import optparse
+import time
+import getpass
+import readline
+import atexit
+try:
+    import pexpect
+    import pxssh
+except ImportError:
+    sys.stderr.write("You do not have 'pexpect' installed.\n")
+    sys.stderr.write("On Ubuntu you need the 'python-pexpect' package.\n")
+    sys.stderr.write("    aptitude -y install python-pexpect\n")
+    exit(1)
+
+
+try:
+    raw_input
+except NameError:
+    raw_input = input
+
+
+histfile = os.path.join(os.environ["HOME"], ".hive_history")
+try:
+    readline.read_history_file(histfile)
+except IOError:
+    pass
+atexit.register(readline.write_history_file, histfile)
+
+CMD_HELP='''Hive commands are preceded by a colon : (just think of vi).
+
+:target name1 name2 name3 ...
+
+    set list of hosts to target commands
+
+:target all
+
+    reset list of hosts to target all hosts in the hive.
+
+:to name command
+
+    send a command line to the named host. This is similar to :target, but
+    sends only one command and does not change the list of targets for future
+    commands.
+
+:sync
+
+    set mode to wait for shell prompts after commands are run. This is the
+    default. When Hive first logs into a host it sets a special shell prompt
+    pattern that it can later look for to synchronize output of the hosts. If
+    you 'su' to another user then it can upset the synchronization. If you need
+    to run something like 'su' then use the following pattern:
+
+    CMD (? for help) > :async
+    CMD (? for help) > sudo su - root
+    CMD (? for help) > :prompt
+    CMD (? for help) > :sync
+
+:async
+
+    set mode to not expect command line prompts (see :sync). Afterwards
+    commands are send to target hosts, but their responses are not read back
+    until :sync is run. This is useful to run before commands that will not
+    return with the special shell prompt pattern that Hive uses to synchronize.
+
+:refresh
+
+    refresh the display. This shows the last few lines of output from all hosts.
+    This is similar to resync, but does not expect the promt. This is useful
+    for seeing what hosts are doing during long running commands.
+
+:resync
+
+    This is similar to :sync, but it does not change the mode. It looks for the
+    prompt and thus consumes all input from all targeted hosts.
+
+:prompt
+
+    force each host to reset command line prompt to the special pattern used to
+    synchronize all the hosts. This is useful if you 'su' to a different user
+    where Hive would not know the prompt to match.
+
+:send my text
+
+    This will send the 'my text' wihtout a line feed to the targeted hosts.
+    This output of the hosts is not automatically synchronized.
+
+:control X
+
+    This will send the given control character to the targeted hosts.
+    For example, ":control c" will send ASCII 3.
+
+:exit
+
+    This will exit the hive shell.
+
+'''
+
+def login (args, cli_username=None, cli_password=None):
+
+    # I have to keep a separate list of host names because Python dicts are not ordered.
+    # I want to keep the same order as in the args list.
+    host_names = []
+    hive_connect_info = {}
+    hive = {}
+    # build up the list of connection information (hostname, username, password, port)
+    for host_connect_string in args:
+        hcd = parse_host_connect_string (host_connect_string)
+        hostname = hcd['hostname']
+        port     = hcd['port']
+        if port == '':
+            port = None
+        if len(hcd['username']) > 0:
+            username = hcd['username']
+        elif cli_username is not None:
+            username = cli_username
+        else:
+            username = raw_input('%s username: ' % hostname)
+        if len(hcd['password']) > 0:
+            password = hcd['password']
+        elif cli_password is not None:
+            password = cli_password
+        else:
+            password = getpass.getpass('%s password: ' % hostname)
+        host_names.append(hostname)
+        hive_connect_info[hostname] = (hostname, username, password, port)
+    # build up the list of hive connections using the connection information.
+    for hostname in host_names:
+        print('connecting to', hostname)
+        try:
+            fout = file("log_"+hostname, "w")
+            hive[hostname] = pxssh.pxssh()
+            # Disable host key checking.
+            hive[hostname].SSH_OPTS = (hive[hostname].SSH_OPTS
+                    + " -o 'StrictHostKeyChecking=no'"
+                    + " -o 'UserKnownHostsFile /dev/null' ")
+            hive[hostname].force_password = True
+            hive[hostname].login(*hive_connect_info[hostname])
+            print(hive[hostname].before)
+            hive[hostname].logfile = fout
+            print('- OK')
+        except Exception as e:
+            print('- ERROR', end=' ')
+            print(str(e))
+            print('Skipping', hostname)
+            hive[hostname] = None
+    return host_names, hive
+
+def main ():
+
+    global options, args, CMD_HELP
+
+    rows = 24
+    cols = 80
+
+    if options.sameuser:
+        cli_username = raw_input('username: ')
+    else:
+        cli_username = None
+
+    if options.samepass:
+        cli_password = getpass.getpass('password: ')
+    else:
+        cli_password = None
+
+    host_names, hive = login(args, cli_username, cli_password)
+
+    synchronous_mode = True
+    target_hostnames = host_names[:]
+    print('targeting hosts:', ' '.join(target_hostnames))
+    while True:
+        cmd = raw_input('CMD (? for help) > ')
+        cmd = cmd.strip()
+        if cmd=='?' or cmd==':help' or cmd==':h':
+            print(CMD_HELP)
+            continue
+        elif cmd==':refresh':
+            refresh (hive, target_hostnames, timeout=0.5)
+            for hostname in target_hostnames:
+                print('/' + '=' * (cols - 2))
+                print('| ' + hostname)
+                print('\\' + '-' * (cols - 2))
+                if hive[hostname] is None:
+                    print('# DEAD: %s' % hostname)
+                else:
+                    print(hive[hostname].before)
+            print('#' * 79)
+            continue
+        elif cmd==':resync':
+            resync (hive, target_hostnames, timeout=0.5)
+            for hostname in target_hostnames:
+                print('/' + '=' * (cols - 2))
+                print('| ' + hostname)
+                print('\\' + '-' * (cols - 2))
+                if hive[hostname] is None:
+                    print('# DEAD: %s' % hostname)
+                else:
+                    print(hive[hostname].before)
+            print('#' * 79)
+            continue
+        elif cmd==':sync':
+            synchronous_mode = True
+            resync (hive, target_hostnames, timeout=0.5)
+            continue
+        elif cmd==':async':
+            synchronous_mode = False
+            continue
+        elif cmd==':prompt':
+            for hostname in target_hostnames:
+                try:
+                    if hive[hostname] is not None:
+                        hive[hostname].set_unique_prompt()
+                except Exception as e:
+                    print("Had trouble communicating with %s, so removing it from the target list." % hostname)
+                    print(str(e))
+                    hive[hostname] = None
+            continue
+        elif cmd[:5] == ':send':
+            cmd, txt = cmd.split(None,1)
+            for hostname in target_hostnames:
+                try:
+                    if hive[hostname] is not None:
+                        hive[hostname].send(txt)
+                except Exception as e:
+                    print("Had trouble communicating with %s, so removing it from the target list." % hostname)
+                    print(str(e))
+                    hive[hostname] = None
+            continue
+        elif cmd[:3] == ':to':
+            cmd, hostname, txt = cmd.split(None,2)
+            print('/' + '=' * (cols - 2))
+            print('| ' + hostname)
+            print('\\' + '-' * (cols - 2))
+            if hive[hostname] is None:
+                print('# DEAD: %s' % hostname)
+                continue
+            try:
+                hive[hostname].sendline (txt)
+                hive[hostname].prompt(timeout=2)
+                print(hive[hostname].before)
+            except Exception as e:
+                print("Had trouble communicating with %s, so removing it from the target list." % hostname)
+                print(str(e))
+                hive[hostname] = None
+            continue
+        elif cmd[:7] == ':expect':
+            cmd, pattern = cmd.split(None,1)
+            print('looking for', pattern)
+            try:
+                for hostname in target_hostnames:
+                    if hive[hostname] is not None:
+                        hive[hostname].expect(pattern)
+                        print(hive[hostname].before)
+            except Exception as e:
+                print("Had trouble communicating with %s, so removing it from the target list." % hostname)
+                print(str(e))
+                hive[hostname] = None
+            continue
+        elif cmd[:7] == ':target':
+            target_hostnames = cmd.split()[1:]
+            if len(target_hostnames) == 0 or target_hostnames[0] == all:
+                target_hostnames = host_names[:]
+            print('targeting hosts:', ' '.join(target_hostnames))
+            continue
+        elif cmd == ':exit' or cmd == ':q' or cmd == ':quit':
+            break
+        elif cmd[:8] == ':control' or cmd[:5] == ':ctrl' :
+            cmd, c = cmd.split(None,1)
+            if ord(c)-96 < 0 or ord(c)-96 > 255:
+                print('/' + '=' * (cols - 2))
+                print('| Invalid character. Must be [a-zA-Z], @, [, ], \\, ^, _, or ?')
+                print('\\' + '-' * (cols - 2))
+                continue
+            for hostname in target_hostnames:
+                try:
+                    if hive[hostname] is not None:
+                        hive[hostname].sendcontrol(c)
+                except Exception as e:
+                    print("Had trouble communicating with %s, so removing it from the target list." % hostname)
+                    print(str(e))
+                    hive[hostname] = None
+            continue
+        elif cmd == ':esc':
+            for hostname in target_hostnames:
+                if hive[hostname] is not None:
+                    hive[hostname].send(chr(27))
+            continue
+        #
+        # Run the command on all targets in parallel
+        #
+        for hostname in target_hostnames:
+            try:
+                if hive[hostname] is not None:
+                    hive[hostname].sendline (cmd)
+            except Exception as e:
+                print("Had trouble communicating with %s, so removing it from the target list." % hostname)
+                print(str(e))
+                hive[hostname] = None
+
+        #
+        # print the response for each targeted host.
+        #
+        if synchronous_mode:
+            for hostname in target_hostnames:
+                try:
+                    print('/' + '=' * (cols - 2))
+                    print('| ' + hostname)
+                    print('\\' + '-' * (cols - 2))
+                    if hive[hostname] is None:
+                        print('# DEAD: %s' % hostname)
+                    else:
+                        hive[hostname].prompt(timeout=2)
+                        print(hive[hostname].before)
+                except Exception as e:
+                    print("Had trouble communicating with %s, so removing it from the target list." % hostname)
+                    print(str(e))
+                    hive[hostname] = None
+            print('#' * 79)
+
+def refresh (hive, hive_names, timeout=0.5):
+
+    '''This waits for the TIMEOUT on each host.
+    '''
+
+    # TODO This is ideal for threading.
+    for hostname in hive_names:
+        if hive[hostname] is not None:
+            hive[hostname].expect([pexpect.TIMEOUT,pexpect.EOF],timeout=timeout)
+
+def resync (hive, hive_names, timeout=2, max_attempts=5):
+
+    '''This waits for the shell prompt for each host in an effort to try to get
+    them all to the same state. The timeout is set low so that hosts that are
+    already at the prompt will not slow things down too much. If a prompt match
+    is made for a hosts then keep asking until it stops matching. This is a
+    best effort to consume all input if it printed more than one prompt. It's
+    kind of kludgy. Note that this will always introduce a delay equal to the
+    timeout for each machine. So for 10 machines with a 2 second delay you will
+    get AT LEAST a 20 second delay if not more. '''
+
+    # TODO This is ideal for threading.
+    for hostname in hive_names:
+        if hive[hostname] is not None:
+            for attempts in range(0, max_attempts):
+                if not hive[hostname].prompt(timeout=timeout):
+                    break
+
+def parse_host_connect_string (hcs):
+
+    '''This parses a host connection string in the form
+    username:password@hostname:port. All fields are options expcet hostname. A
+    dictionary is returned with all four keys. Keys that were not included are
+    set to empty strings ''. Note that if your password has the '@' character
+    then you must backslash escape it. '''
+
+    if '@' in hcs:
+        p = re.compile (r'(?P<username>[^@:]*)(:?)(?P<password>.*)(?!\\)@(?P<hostname>[^:]*):?(?P<port>[0-9]*)')
+    else:
+        p = re.compile (r'(?P<username>)(?P<password>)(?P<hostname>[^:]*):?(?P<port>[0-9]*)')
+    m = p.search (hcs)
+    d = m.groupdict()
+    d['password'] = d['password'].replace('\\@','@')
+    return d
+
+if __name__ == '__main__':
+    start_time = time.time()
+    parser = optparse.OptionParser(formatter=optparse.TitledHelpFormatter(), usage=globals()['__doc__'], version='$Id: hive.py 533 2012-10-20 02:19:33Z noah $',conflict_handler="resolve")
+    parser.add_option ('-v', '--verbose', action='store_true', default=False, help='verbose output')
+    parser.add_option ('--samepass', action='store_true', default=False, help='Use same password for each login.')
+    parser.add_option ('--sameuser', action='store_true', default=False, help='Use same username for each login.')
+    (options, args) = parser.parse_args()
+    if len(args) < 1:
+        parser.error ('missing argument')
+    if options.verbose: print(time.asctime())
+    main()
+    if options.verbose: print(time.asctime())
+    if options.verbose: print('TOTAL TIME IN MINUTES:', end=' ')
+    if options.verbose: print((time.time() - start_time) / 60.0)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/monitor.py b/lldb/third_party/Python/module/pexpect-4.6/examples/monitor.py
new file mode 100755
index 00000000000..c030d3a493d
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/monitor.py
@@ -0,0 +1,229 @@
+#!/usr/bin/env python
+
+''' This runs a sequence of commands on a remote host using SSH. It runs a
+simple system checks such as uptime and free to monitor the state of the remote
+host.
+
+./monitor.py [-s server_hostname] [-u username] [-p password]
+    -s : hostname of the remote server to login to.
+    -u : username to user for login.
+    -p : Password to user for login.
+
+Example:
+    This will print information about the given host:
+        ./monitor.py -s www.example.com -u mylogin -p mypassword
+
+It works like this:
+    Login via SSH (This is the hardest part).
+    Run and parse 'uptime'.
+    Run 'iostat'.
+    Run 'vmstat'.
+    Run 'netstat'
+    Run 'free'.
+    Exit the remote host.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import os, sys, re, getopt, getpass
+import pexpect
+
+
+try:
+    raw_input
+except NameError:
+    raw_input = input
+
+
+#
+# Some constants.
+#
+COMMAND_PROMPT = '[#$] ' ### This is way too simple for industrial use -- we will change is ASAP.
+TERMINAL_PROMPT = r'(?i)terminal type\?'
+TERMINAL_TYPE = 'vt100'
+# This is the prompt we get if SSH does not have the remote host's public key stored in the cache.
+SSH_NEWKEY = '(?i)are you sure you want to continue connecting'
+
+def exit_with_usage():
+
+    print(globals()['__doc__'])
+    os._exit(1)
+
+def main():
+
+    global COMMAND_PROMPT, TERMINAL_PROMPT, TERMINAL_TYPE, SSH_NEWKEY
+    ######################################################################
+    ## Parse the options, arguments, get ready, etc.
+    ######################################################################
+    try:
+        optlist, args = getopt.getopt(sys.argv[1:], 'h?s:u:p:', ['help','h','?'])
+    except Exception as e:
+        print(str(e))
+        exit_with_usage()
+    options = dict(optlist)
+    if len(args) > 1:
+        exit_with_usage()
+
+    if [elem for elem in options if elem in ['-h','--h','-?','--?','--help']]:
+        print("Help:")
+        exit_with_usage()
+
+    if '-s' in options:
+        host = options['-s']
+    else:
+        host = raw_input('hostname: ')
+    if '-u' in options:
+        user = options['-u']
+    else:
+        user = raw_input('username: ')
+    if '-p' in options:
+        password = options['-p']
+    else:
+        password = getpass.getpass('password: ')
+
+    #
+    # Login via SSH
+    #
+    child = pexpect.spawn('ssh -l %s %s'%(user, host))
+    i = child.expect([pexpect.TIMEOUT, SSH_NEWKEY, COMMAND_PROMPT, '(?i)password'])
+    if i == 0: # Timeout
+        print('ERROR! could not login with SSH. Here is what SSH said:')
+        print(child.before, child.after)
+        print(str(child))
+        sys.exit (1)
+    if i == 1: # In this case SSH does not have the public key cached.
+        child.sendline ('yes')
+        child.expect ('(?i)password')
+    if i == 2:
+        # This may happen if a public key was setup to automatically login.
+        # But beware, the COMMAND_PROMPT at this point is very trivial and
+        # could be fooled by some output in the MOTD or login message.
+        pass
+    if i == 3:
+        child.sendline(password)
+        # Now we are either at the command prompt or
+        # the login process is asking for our terminal type.
+        i = child.expect ([COMMAND_PROMPT, TERMINAL_PROMPT])
+        if i == 1:
+            child.sendline (TERMINAL_TYPE)
+            child.expect (COMMAND_PROMPT)
+    #
+    # Set command prompt to something more unique.
+    #
+    COMMAND_PROMPT = r"\[PEXPECT\]\$ "
+    child.sendline (r"PS1='[PEXPECT]\$ '") # In case of sh-style
+    i = child.expect ([pexpect.TIMEOUT, COMMAND_PROMPT], timeout=10)
+    if i == 0:
+        print("# Couldn't set sh-style prompt -- trying csh-style.")
+        child.sendline (r"set prompt='[PEXPECT]\$ '")
+        i = child.expect ([pexpect.TIMEOUT, COMMAND_PROMPT], timeout=10)
+        if i == 0:
+            print("Failed to set command prompt using sh or csh style.")
+            print("Response was:")
+            print(child.before)
+            sys.exit (1)
+
+    # Now we should be at the command prompt and ready to run some commands.
+    print('---------------------------------------')
+    print('Report of commands run on remote host.')
+    print('---------------------------------------')
+
+    # Run uname.
+    child.sendline ('uname -a')
+    child.expect (COMMAND_PROMPT)
+    print(child.before)
+    if 'linux' in child.before.lower():
+        LINUX_MODE = 1
+    else:
+        LINUX_MODE = 0
+
+    # Run and parse 'uptime'.
+    child.sendline ('uptime')
+    child.expect(r'up\s+(.*?),\s+([0-9]+) users?,\s+load averages?: ([0-9]+\.[0-9][0-9]),?\s+([0-9]+\.[0-9][0-9]),?\s+([0-9]+\.[0-9][0-9])')
+    duration, users, av1, av5, av15 = child.match.groups()
+    days = '0'
+    hours = '0'
+    mins = '0'
+    if 'day' in duration:
+        child.match = re.search(r'([0-9]+)\s+day',duration)
+        days = str(int(child.match.group(1)))
+    if ':' in duration:
+        child.match = re.search('([0-9]+):([0-9]+)',duration)
+        hours = str(int(child.match.group(1)))
+        mins = str(int(child.match.group(2)))
+    if 'min' in duration:
+        child.match = re.search(r'([0-9]+)\s+min',duration)
+        mins = str(int(child.match.group(1)))
+    print()
+    print('Uptime: %s days, %s users, %s (1 min), %s (5 min), %s (15 min)' % (
+        duration, users, av1, av5, av15))
+    child.expect (COMMAND_PROMPT)
+
+    # Run iostat.
+    child.sendline ('iostat')
+    child.expect (COMMAND_PROMPT)
+    print(child.before)
+
+    # Run vmstat.
+    child.sendline ('vmstat')
+    child.expect (COMMAND_PROMPT)
+    print(child.before)
+
+    # Run free.
+    if LINUX_MODE:
+        child.sendline ('free') # Linux systems only.
+        child.expect (COMMAND_PROMPT)
+        print(child.before)
+
+    # Run df.
+    child.sendline ('df')
+    child.expect (COMMAND_PROMPT)
+    print(child.before)
+
+    # Run lsof.
+    child.sendline ('lsof')
+    child.expect (COMMAND_PROMPT)
+    print(child.before)
+
+#    # Run netstat
+#    child.sendline ('netstat')
+#    child.expect (COMMAND_PROMPT)
+#    print child.before
+
+#    # Run MySQL show status.
+#    child.sendline ('mysql -p -e "SHOW STATUS;"')
+#    child.expect (PASSWORD_PROMPT_MYSQL)
+#    child.sendline (password_mysql)
+#    child.expect (COMMAND_PROMPT)
+#    print
+#    print child.before
+
+    # Now exit the remote host.
+    child.sendline ('exit')
+    index = child.expect([pexpect.EOF, "(?i)there are stopped jobs"])
+    if index==1:
+        child.sendline("exit")
+        child.expect(EOF)
+
+if __name__ == "__main__":
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/passmass.py b/lldb/third_party/Python/module/pexpect-4.6/examples/passmass.py
new file mode 100755
index 00000000000..c1ec4d0b326
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/passmass.py
@@ -0,0 +1,116 @@
+#!/usr/bin/env python
+
+'''Change passwords on the named machines. passmass host1 host2 host3 . . .
+Note that login shell prompt on remote machine must end in # or $.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import pexpect
+import sys, getpass
+
+
+try:
+    raw_input
+except NameError:
+    raw_input = input
+
+
+USAGE = '''passmass host1 host2 host3 . . .'''
+COMMAND_PROMPT = '[$#] '
+TERMINAL_PROMPT = r'Terminal type\?'
+TERMINAL_TYPE = 'vt100'
+SSH_NEWKEY = r'Are you sure you want to continue connecting \(yes/no\)\?'
+
+def login(host, user, password):
+
+    child = pexpect.spawn('ssh -l %s %s'%(user, host))
+    fout = file ("LOG.TXT","wb")
+    child.logfile_read = fout #use child.logfile to also log writes (passwords!)
+
+    i = child.expect([pexpect.TIMEOUT, SSH_NEWKEY, '[Pp]assword: '])
+    if i == 0: # Timeout
+        print('ERROR!')
+        print('SSH could not login. Here is what SSH said:')
+        print(child.before, child.after)
+        sys.exit (1)
+    if i == 1: # SSH does not have the public key. Just accept it.
+        child.sendline ('yes')
+        child.expect ('[Pp]assword: ')
+    child.sendline(password)
+    # Now we are either at the command prompt or
+    # the login process is asking for our terminal type.
+    i = child.expect (['Permission denied', TERMINAL_PROMPT, COMMAND_PROMPT])
+    if i == 0:
+        print('Permission denied on host:', host)
+        sys.exit (1)
+    if i == 1:
+        child.sendline (TERMINAL_TYPE)
+        child.expect (COMMAND_PROMPT)
+    return child
+
+# (current) UNIX password:
+def change_password(child, user, oldpassword, newpassword):
+
+    child.sendline('passwd')
+    i = child.expect(['[Oo]ld [Pp]assword', '.current.*password', '[Nn]ew [Pp]assword'])
+    # Root does not require old password, so it gets to bypass the next step.
+    if i == 0 or i == 1:
+        child.sendline(oldpassword)
+        child.expect('[Nn]ew [Pp]assword')
+    child.sendline(newpassword)
+    i = child.expect(['[Nn]ew [Pp]assword', '[Rr]etype', '[Rr]e-enter'])
+    if i == 0:
+        print('Host did not like new password. Here is what it said...')
+        print(child.before)
+        child.send (chr(3)) # Ctrl-C
+        child.sendline('') # This should tell remote passwd command to quit.
+        return
+    child.sendline(newpassword)
+
+def main():
+
+    if len(sys.argv) <= 1:
+        print(USAGE)
+        return 1
+
+    user = raw_input('Username: ')
+    password = getpass.getpass('Current Password: ')
+    newpassword = getpass.getpass('New Password: ')
+    newpasswordconfirm = getpass.getpass('Confirm New Password: ')
+    if newpassword != newpasswordconfirm:
+        print('New Passwords do not match.')
+        return 1
+
+    for host in sys.argv[1:]:
+        child = login(host, user, password)
+        if child == None:
+            print('Could not login to host:', host)
+            continue
+        print('Changing password on host:', host)
+        change_password(child, user, password, newpassword)
+        child.expect(COMMAND_PROMPT)
+        child.sendline('exit')
+
+if __name__ == '__main__':
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/python.py b/lldb/third_party/Python/module/pexpect-4.6/examples/python.py
new file mode 100755
index 00000000000..44c15e1da95
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/python.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+
+'''This starts the python interpreter; captures the startup message; then gives
+the user interactive control over the session. Why? For fun...
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import absolute_import
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import pexpect
+
+# Don't do this unless you like being John Malkovich
+# c = pexpect.spawnu('/usr/bin/env python ./python.py')
+
+# Note that, for Python 3 compatibility reasons, we are using spawnu and
+# importing unicode_literals (above). spawnu accepts Unicode input and
+# unicode_literals makes all string literals in this script Unicode by default.
+c = pexpect.spawnu('/usr/bin/env python')
+
+c.expect('>>>')
+print('And now for something completely different...')
+print(''.join(reversed((c.before))))
+print('Yes, it\'s python, but it\'s backwards.')
+print()
+print('Escape character is \'^]\'.')
+print(c.after, end=' ')
+c.interact()
+c.kill(1)
+print('is alive:', c.isalive())
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/script.py b/lldb/third_party/Python/module/pexpect-4.6/examples/script.py
new file mode 100755
index 00000000000..c8b94961de6
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/script.py
@@ -0,0 +1,114 @@
+#!/usr/bin/env python
+
+'''This spawns a sub-shell (bash) and gives the user interactive control. The
+entire shell session is logged to a file called script.log. This behaves much
+like the classic BSD command 'script'.
+
+./script.py [-a] [-c command] {logfilename}
+
+    logfilename : This is the name of the log file. Default is script.log.
+    -a : Append to log file. Default is to overwrite log file.
+    -c : spawn command. Default is to spawn the sh shell.
+
+Example:
+
+    This will start a bash shell and append to the log named my_session.log:
+
+        ./script.py -a -c bash my_session.log
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import os, sys, time, getopt
+import signal, fcntl, termios, struct
+import pexpect
+
+global_pexpect_instance = None # Used by signal handler
+
+def exit_with_usage():
+
+    print(globals()['__doc__'])
+    os._exit(1)
+
+def main():
+
+    ######################################################################
+    # Parse the options, arguments, get ready, etc.
+    ######################################################################
+    try:
+        optlist, args = getopt.getopt(sys.argv[1:], 'h?ac:', ['help','h','?'])
+    except Exception as e:
+        print(str(e))
+        exit_with_usage()
+    options = dict(optlist)
+    if len(args) > 1:
+        exit_with_usage()
+
+    if [elem for elem in options if elem in ['-h','--h','-?','--?','--help']]:
+        print("Help:")
+        exit_with_usage()
+
+    if len(args) == 1:
+        script_filename = args[0]
+    else:
+        script_filename = "script.log"
+    if '-a' in options:
+        fout = open(script_filename, "ab")
+    else:
+        fout = open(script_filename, "wb")
+    if '-c' in options:
+        command = options['-c']
+    else:
+        command = "sh"
+
+    # Begin log with date/time in the form CCCCyymm.hhmmss
+    fout.write ('# %4d%02d%02d.%02d%02d%02d \n' % time.localtime()[:-3])
+
+    ######################################################################
+    # Start the interactive session
+    ######################################################################
+    p = pexpect.spawn(command)
+    p.logfile = fout
+    global global_pexpect_instance
+    global_pexpect_instance = p
+    signal.signal(signal.SIGWINCH, sigwinch_passthrough)
+
+    print("Script recording started. Type ^] (ASCII 29) to escape from the script shell.")
+    p.interact(chr(29))
+    fout.close()
+    return 0
+
+def sigwinch_passthrough (sig, data):
+
+    # Check for buggy platforms (see pexpect.setwinsize()).
+    if 'TIOCGWINSZ' in dir(termios):
+        TIOCGWINSZ = termios.TIOCGWINSZ
+    else:
+        TIOCGWINSZ = 1074295912 # assume
+    s = struct.pack ("HHHH", 0, 0, 0, 0)
+    a = struct.unpack ('HHHH', fcntl.ioctl(sys.stdout.fileno(), TIOCGWINSZ , s))
+    global global_pexpect_instance
+    global_pexpect_instance.setwinsize(a[0],a[1])
+
+if __name__ == "__main__":
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/ssh_tunnel.py b/lldb/third_party/Python/module/pexpect-4.6/examples/ssh_tunnel.py
new file mode 100755
index 00000000000..d7619118e08
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/ssh_tunnel.py
@@ -0,0 +1,105 @@
+#!/usr/bin/env python
+
+'''This starts an SSH tunnel to a given host. If the SSH process ever dies then
+this script will detect that and restart it. I use this under Cygwin to keep
+open encrypted tunnels to port 25 (SMTP), port 143 (IMAP4), and port 110
+(POP3). I set my mail client to talk to localhost and I keep this script
+running in the background.
+
+Note that this is a rather stupid script at the moment because it just looks to
+see if any ssh process is running. It should really make sure that our specific
+ssh process is running. The problem is that ssh is missing a very useful
+feature. It has no way to report the process id of the background daemon that
+it creates with the -f command. This would be a really useful script if I could
+figure a way around this problem.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import pexpect
+import getpass
+import time
+
+
+try:
+    raw_input
+except NameError:
+    raw_input = input
+
+
+# SMTP:25 IMAP4:143 POP3:110
+tunnel_command = 'ssh -C -N -f -L 25:127.0.0.1:25 -L 143:127.0.0.1:143 -L 110:127.0.0.1:110 %(user)@%(host)'
+host = raw_input('Hostname: ')
+user = raw_input('Username: ')
+X = getpass.getpass('Password: ')
+
+def get_process_info ():
+
+    # This seems to work on both Linux and BSD, but should otherwise be considered highly UNportable.
+
+    ps = pexpect.run ('ps ax -O ppid')
+    pass
+
+def start_tunnel ():
+
+    try:
+        ssh_tunnel = pexpect.spawn (tunnel_command % globals())
+        ssh_tunnel.expect ('password:')
+        time.sleep (0.1)
+        ssh_tunnel.sendline (X)
+        time.sleep (60) # Cygwin is slow to update process status.
+        ssh_tunnel.expect (pexpect.EOF)
+
+    except Exception as e:
+        print(str(e))
+
+def main ():
+
+    while True:
+        ps = pexpect.spawn ('ps')
+        time.sleep (1)
+        index = ps.expect (['/usr/bin/ssh', pexpect.EOF, pexpect.TIMEOUT])
+        if index == 2:
+            print('TIMEOUT in ps command...')
+            print(str(ps))
+            time.sleep (13)
+        if index == 1:
+            print(time.asctime(), end=' ')
+            print('restarting tunnel')
+            start_tunnel ()
+            time.sleep (11)
+            print('tunnel OK')
+        else:
+            # print 'tunnel OK'
+            time.sleep (7)
+
+if __name__ == '__main__':
+
+    main ()
+
+# This was for older SSH versions that didn't have -f option
+#tunnel_command = 'ssh -C -n -L 25:%(host)s:25 -L 110:%(host)s:110 %(user)s@%(host)s -f nothing.sh'
+#nothing_script = '''#!/bin/sh
+#while true; do sleep 53; done
+#'''
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/table_test.html b/lldb/third_party/Python/module/pexpect-4.6/examples/table_test.html
new file mode 100644
index 00000000000..5dba0ecf0c8
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/table_test.html
@@ -0,0 +1,106 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+<html>
+<head>
+<title>TEST</title>
+</head>
+<style type="text/css">
+a {color: #9f9; text-decoration: none}
+a:hover {color: #0f0}
+hr {color: #0f0}
+html,table,body,textarea,input,form
+{
+font-family: "Courier New", Courier, mono; 
+font-size: 8pt; 
+color: #0c0;
+background-color: #020;
+margin:0;
+padding:0;
+border:0;
+}
+input { background-color: #010; }
+textarea {
+border-width:1;
+border-style:solid;
+border-color:#0c0;
+padding:3;
+margin:3;
+}
+</style>
+<script>
+var foo="" +
+" 123456789012345678901234567890123456789012345 789012345678901234567890123456789"+
+"0 2345678901234567890123456789012345678901234 6 89012345678901234567890123456789"+
+"01 34567890123456789012345678901234567890123 567 9012345678901234567890123456789"+
+"012 456789012345678901234567890123456789012 45678 012345678901234567890123456789"+
+"0123 5678901234567890123456789012345678901 3456789 12345678901234567890123456789"+
+"01234 67890123456789012345678901234567890 234567890 2345678901234567890123456789"+
+"012345 789012345678901234567890123456789 12345678901 345678901234567890123456789"+
+"0123456 8901234567890123456789012345678 0123456789012 45678901234567890123456789"+
+"01234567 90123456789012345678901234567 901234567890123 5678901234567890123456789"+
+"012345678 012345678901234567890123456 89012345678901234 678901234567890123456789"+
+"0123456789 1234567890123456789012345 7890123456789012345 78901234567890123456789"+
+"01234567890 23456789012345678901234 678901234567890123456 8901234567890123456789"+
+"012345678901 345678901234567890123 56789012345678901234567 901234567890123456789"+
+"0123456789012 4567890123456789012 4567890123456789012345678 0123456789012345678 "+
+"01234567890123 56789012345678901 345678901234567890123456789 12345678901234567 9"+
+"012345678901234 678901234567890 23456789012  567  01234567890 234567890123456 89"+
+"0123456789012345 7890123456789 123457789012  567  012345678901 3456789012345 789"+
+"01234567890123456 89012345678 012345678901234567890123456789012 45678901234 6789"+
+"012345678901234567 901234567 90123456789 12345678901 34567890123 567890123 56789"+
+"0123456789012345678 0123456 8901234567890  3456789  2345678901234 6789012 456789"+
+"01234567890123456789 12345 7890123456789012       0123456789012345 78901 3456789"+
+"012345678901234567890 234 67890123456789012345678901234567890123456 890 23456789"+
+"0123456789012345678901 3 5678901234567890123456789012345678901234567 9 123456789"+
+"01234567890123456789012 456789012345678901234567890123456789012345678 0123456789";
+function start2()
+{
+    // get the reference for the body
+    //var mybody = document.getElementsByTagName("body")[0];
+    var mybody = document.getElementById("replace_me");
+    var myroot = document.getElementById("a_parent");
+    mytable = document.createElement("table");
+    mytablebody = document.createElement("tbody");
+    mytable.setAttribute("border","0");
+    mytable.setAttribute("cellspacing","0");
+    mytable.setAttribute("cellpadding","0");
+    for(var j = 0; j < 24; j++)
+    {
+        mycurrent_row = document.createElement("tr");
+        for(var i = 0; i < 80; i++)
+        {
+            mycurrent_cell = document.createElement("td");
+            offset = (j*80)+i;
+            currenttext = document.createTextNode(foo.substring(offset,offset+1));
+            mycurrent_cell.appendChild(currenttext);
+            mycurrent_row.appendChild(mycurrent_cell);
+        }
+        mytablebody.appendChild(mycurrent_row);
+    }
+    mytable.appendChild(mytablebody);
+    myroot.replaceChild(mytable,mybody);
+    //mybody.appendChild(mytable);
+}
+</script>
+<body onload="start2();">
+<table align="LEFT" border="0" cellspacing="0" cellpadding="0">
+<div id="a_parent">
+<span id="replace_me">
+<tr align="left" valign="left">
+    <td>/</td>
+    <td>h</td>
+    <td>o</td>
+    <td>m</td>
+    <td>e</td>
+    <td>/</td>
+    <td>n</td>
+    <td>o</td>
+    <td>a</td>
+    <td>h</td>
+    <td>/</td>
+    <td>&nbsp;</td>
+</tr>
+</table>
+</span>
+</div>
+</body>
+</html>
\ No newline at end of file
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/topip.py b/lldb/third_party/Python/module/pexpect-4.6/examples/topip.py
new file mode 100755
index 00000000000..64dac3089cd
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/topip.py
@@ -0,0 +1,299 @@
+#!/usr/bin/env python
+
+''' This runs netstat on a local or remote server. It calculates some simple
+statistical information on the number of external inet connections. It groups
+by IP address. This can be used to detect if one IP address is taking up an
+excessive number of connections. It can also send an email alert if a given IP
+address exceeds a threshold between runs of the script. This script can be used
+as a drop-in Munin plugin or it can be used stand-alone from cron. I used this
+on a busy web server that would sometimes get hit with denial of service
+attacks. This made it easy to see if a script was opening many multiple
+connections. A typical browser would open fewer than 10 connections at once.
+A script might open over 100 simultaneous connections.
+
+./topip.py [-s server_hostname] [-u username] [-p password]
+        {-a from_addr,to_addr} {-n N} {-v} {--ipv6}
+
+    -s : hostname of the remote server to login to.
+    -u : username to user for login.
+    -p : password to user for login.
+    -n : print stddev for the the number of the top 'N' ipaddresses.
+    -v : verbose - print stats and list of top ipaddresses.
+    -a : send alert if stddev goes over 20.
+    -l : to log message to /var/log/topip.log
+    --ipv6 : this parses netstat output that includes ipv6 format.
+        Note that this actually only works with ipv4 addresses, but for
+        versions of netstat that print in ipv6 format.
+    --stdev=N : Where N is an integer. This sets the trigger point
+        for alerts and logs. Default is to trigger if the
+        max value is over 5 standard deviations.
+
+Example:
+
+    This will print stats for the top IP addresses connected to the given host:
+
+        ./topip.py -s www.example.com -u mylogin -p mypassword -n 10 -v
+
+    This will send an alert email if the maxip goes over the stddev trigger
+    value and the the current top ip is the same as the last top ip
+    (/tmp/topip.last):
+
+        ./topip.py -s www.example.com -u mylogin -p mypassword \\
+                -n 10 -v -a alert@example.com,user@example.com
+
+    This will print the connection stats for the localhost in Munin format:
+
+        ./topip.py
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import absolute_import
+from __future__ import print_function
+from __future__ import unicode_literals
+
+# See http://pexpect.sourceforge.net/
+import pexpect
+import pxssh
+import os
+import sys
+import time
+import getopt
+import pickle
+import getpass
+import smtplib
+from pprint import pprint
+
+
+try:
+    raw_input
+except NameError:
+    raw_input = input
+
+
+TOPIP_LOG_FILE = '/var/log/topip.log'
+TOPIP_LAST_RUN_STATS = '/var/run/topip.last'
+
+def exit_with_usage():
+
+    print(globals()['__doc__'])
+    os._exit(1)
+
+def stats(r):
+
+    '''This returns a dict of the median, average, standard deviation,
+    min and max of the given sequence.
+
+    >>> from topip import stats
+    >>> print stats([5,6,8,9])
+    {'med': 8, 'max': 9, 'avg': 7.0, 'stddev': 1.5811388300841898, 'min': 5}
+    >>> print stats([1000,1006,1008,1014])
+    {'med': 1008, 'max': 1014, 'avg': 1007.0, 'stddev': 5.0, 'min': 1000}
+    >>> print stats([1,3,4,5,18,16,4,3,3,5,13])
+    {'med': 4, 'max': 18, 'avg': 6.8181818181818183, 'stddev': 5.6216817577237475, 'min': 1}
+    >>> print stats([1,3,4,5,18,16,4,3,3,5,13,14,5,6,7,8,7,6,6,7,5,6,4,14,7])
+    {'med': 6, 'max': 18, 'avg': 7.0800000000000001, 'stddev': 4.3259218670706474, 'min': 1}
+    '''
+
+    total = sum(r)
+    avg = float(total)/float(len(r))
+    sdsq = sum([(i-avg)**2 for i in r])
+    s = sorted(list(r))
+    return dict(list(zip(['med', 'avg', 'stddev', 'min', 'max'],
+        (s[len(s)//2], avg, (sdsq/len(r))**.5, min(r), max(r)))))
+
+def send_alert (message, subject, addr_from, addr_to, smtp_server='localhost'):
+
+    '''This sends an email alert.
+    '''
+
+    message = ( 'From: %s\r\nTo: %s\r\nSubject: %s\r\n\r\n'
+            % (addr_from, addr_to, subject) + message )
+    server = smtplib.SMTP(smtp_server)
+    server.sendmail(addr_from, addr_to, message)
+    server.quit()
+
+def main():
+
+    # Parse the options, arguments, etc.
+    try:
+        optlist, args = getopt.getopt(sys.argv[1:],
+                'h?valqs:u:p:n:', ['help','h','?','ipv6','stddev='])
+    except Exception as e:
+        print(str(e))
+        exit_with_usage()
+    options = dict(optlist)
+
+    munin_flag = False
+    if len(args) > 0:
+        if args[0] == 'config':
+            print('graph_title Netstat Connections per IP')
+            print('graph_vlabel Socket connections per IP')
+            print('connections_max.label max')
+            print('connections_max.info Maximum number of connections per IP')
+            print('connections_avg.label avg')
+            print('connections_avg.info Average number of connections per IP')
+            print('connections_stddev.label stddev')
+            print('connections_stddev.info Standard deviation')
+            return 0
+        elif args[0] != '':
+            print(args, len(args))
+            return 0
+            exit_with_usage()
+    if [elem for elem in options if elem in ['-h','--h','-?','--?','--help']]:
+        print('Help:')
+        exit_with_usage()
+    if '-s' in options:
+        hostname = options['-s']
+    else:
+        # if host was not specified then assume localhost munin plugin.
+        munin_flag = True
+        hostname = 'localhost'
+    # If localhost then don't ask for username/password.
+    if hostname != 'localhost' and hostname != '127.0.0.1':
+        if '-u' in options:
+            username = options['-u']
+        else:
+            username = raw_input('username: ')
+        if '-p' in options:
+            password = options['-p']
+        else:
+            password = getpass.getpass('password: ')
+        use_localhost = False
+    else:
+        use_localhost = True
+
+    if '-l' in options:
+        log_flag = True
+    else:
+        log_flag = False
+    if '-n' in options:
+        average_n = int(options['-n'])
+    else:
+        average_n = None
+    if '-v' in options:
+        verbose = True
+    else:
+        verbose = False
+    if '-a' in options:
+        alert_flag = True
+        (alert_addr_from, alert_addr_to) = tuple(options['-a'].split(','))
+    else:
+        alert_flag = False
+    if '--ipv6' in options:
+        ipv6_flag = True
+    else:
+        ipv6_flag = False
+    if '--stddev' in options:
+        stddev_trigger = float(options['--stddev'])
+    else:
+        stddev_trigger = 5
+
+    if ipv6_flag:
+        netstat_pattern = r'(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+::ffff:(\S+):(\S+)\s+.*?\r'
+    else:
+        netstat_pattern = r'(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(?:::ffff:)*(\S+):(\S+)\s+.*?\r'
+        #netstat_pattern = r'(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+):(\S+)\s+.*?\r'
+
+    # run netstat (either locally or via SSH).
+    if use_localhost:
+        p = pexpect.spawn('netstat -n -t')
+        PROMPT = pexpect.TIMEOUT
+    else:
+        p = pxssh.pxssh()
+        p.login(hostname, username, password)
+        p.sendline('netstat -n -t')
+        PROMPT = p.PROMPT
+
+    # For each matching netstat_pattern put the ip address in the list.
+    ip_list = {}
+    try:
+        while 1:
+            i = p.expect([PROMPT, netstat_pattern])
+            if i == 0:
+                break
+            k = p.match.groups()[4].decode('utf-8')
+            if k in ip_list:
+                ip_list[k] = ip_list[k] + 1
+            else:
+                ip_list[k] = 1
+    except:
+        pass
+
+    # remove a few common, uninteresting addresses from the dictionary.
+    ip_list = dict([ (key,value) for key,value in ip_list.items() if '192.168.' not in key])
+    ip_list = dict([ (key,value) for key,value in ip_list.items() if '127.0.0.1' not in key])
+
+    ip_list = list(ip_list.items())
+    if len(ip_list) < 1:
+        if verbose: print('Warning: no networks connections worth looking at.')
+        return 0
+    ip_list.sort(key=lambda x:x[1])
+
+    # generate some stats for the ip addresses found.
+    if average_n is not None and average_n <= 1:
+        average_n = None
+    # Reminder: the * unary operator treats the list elements as arguments.
+    zipped = zip(*ip_list[0:average_n])
+    s = stats(list(zipped)[1])
+    s['maxip'] = ip_list[0]
+
+    # print munin-style or verbose results for the stats.
+    if munin_flag:
+        print('connections_max.value', s['max'])
+        print('connections_avg.value', s['avg'])
+        print('connections_stddev.value', s['stddev'])
+        return 0
+    if verbose:
+        pprint (s)
+        print()
+        pprint (ip_list[0:average_n])
+
+    # load the stats from the last run.
+    try:
+        last_stats = pickle.load(file(TOPIP_LAST_RUN_STATS))
+    except:
+        last_stats = {'maxip':None}
+
+    if ( s['maxip'][1] > (s['stddev'] * stddev_trigger)
+            and s['maxip']==last_stats['maxip'] ):
+        if verbose: print('The maxip has been above trigger for two consecutive samples.')
+        if alert_flag:
+            if verbose: print('SENDING ALERT EMAIL')
+            send_alert(str(s), 'ALERT on %s'
+                    % hostname, alert_addr_from, alert_addr_to)
+        if log_flag:
+            if verbose: print('LOGGING THIS EVENT')
+            fout = file(TOPIP_LOG_FILE,'a')
+            #dts = time.strftime('%Y:%m:%d:%H:%M:%S', time.localtime())
+            dts = time.asctime()
+            fout.write ('%s - %d connections from %s\n'
+                    % (dts,s['maxip'][1],str(s['maxip'][0])))
+            fout.close()
+
+    # save state to TOPIP_LAST_RUN_STATS
+    try:
+        pickle.dump(s, file(TOPIP_LAST_RUN_STATS,'w'))
+        os.chmod (TOPIP_LAST_RUN_STATS, 0o664)
+    except:
+        pass
+    # p.logout()
+
+if __name__ == '__main__':
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/examples/uptime.py b/lldb/third_party/Python/module/pexpect-4.6/examples/uptime.py
new file mode 100755
index 00000000000..86b8dffa1c1
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/examples/uptime.py
@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+
+'''This displays uptime information using uptime. This is redundant,
+but it demonstrates expecting for a regular expression that uses subgroups.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import absolute_import
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import pexpect
+import re
+
+# There are many different styles of uptime results. I try to parse them all. Yeee!
+# Examples from different machines:
+# [x86] Linux 2.4 (Redhat 7.3)
+#  2:06pm  up 63 days, 18 min,  3 users,  load average: 0.32, 0.08, 0.02
+# [x86] Linux 2.4.18-14 (Redhat 8.0)
+#  3:07pm  up 29 min,  1 user,  load average: 2.44, 2.51, 1.57
+# [PPC - G4] MacOS X 10.1 SERVER Edition
+# 2:11PM  up 3 days, 13:50, 3 users, load averages: 0.01, 0.00, 0.00
+# [powerpc] Darwin v1-58.corefa.com 8.2.0 Darwin Kernel Version 8.2.0
+# 10:35  up 18:06, 4 users, load averages: 0.52 0.47 0.36
+# [Sparc - R220] Sun Solaris (8)
+#  2:13pm  up 22 min(s),  1 user,  load average: 0.02, 0.01, 0.01
+# [x86] Linux 2.4.18-14 (Redhat 8)
+# 11:36pm  up 4 days, 17:58,  1 user,  load average: 0.03, 0.01, 0.00
+# AIX jwdir 2 5 0001DBFA4C00
+#  09:43AM   up  23:27,  1 user,  load average: 0.49, 0.32, 0.23
+# OpenBSD box3 2.9 GENERIC#653 i386
+#  6:08PM  up 4 days, 22:26, 1 user, load averages: 0.13, 0.09, 0.08
+
+# Note that, for Python 3 compatibility reasons, we are using spawnu and
+# importing unicode_literals (above). spawnu accepts Unicode input and
+# unicode_literals makes all string literals in this script Unicode by default.
+p = pexpect.spawnu('uptime')
+
+# This parses uptime output into the major groups using regex group matching.
+p.expect(r'up\s+(.*?),\s+([0-9]+) users?,\s+load averages?: ([0-9]+\.[0-9][0-9]),?\s+([0-9]+\.[0-9][0-9]),?\s+([0-9]+\.[0-9][0-9])')
+duration, users, av1, av5, av15 = p.match.groups()
+
+# The duration is a little harder to parse because of all the different
+# styles of uptime. I'm sure there is a way to do this all at once with
+# one single regex, but I bet it would be hard to read and maintain.
+# If anyone wants to send me a version using a single regex I'd be happy to see it.
+days = '0'
+hours = '0'
+mins = '0'
+if 'day' in duration:
+    p.match = re.search(r'([0-9]+)\s+day',duration)
+    days = str(int(p.match.group(1)))
+if ':' in duration:
+    p.match = re.search('([0-9]+):([0-9]+)',duration)
+    hours = str(int(p.match.group(1)))
+    mins = str(int(p.match.group(2)))
+if 'min' in duration:
+    p.match = re.search(r'([0-9]+)\s+min',duration)
+    mins = str(int(p.match.group(1)))
+
+# Print the parsed fields in CSV format.
+print('days, hours, minutes, users, cpu avg 1 min, cpu avg 5 min, cpu avg 15 min')
+print('%s, %s, %s, %s, %s, %s, %s' % (days, hours, mins, users, av1, av5, av15))
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/notes/my_forkpty.py b/lldb/third_party/Python/module/pexpect-4.6/notes/my_forkpty.py
new file mode 100644
index 00000000000..f2bef23bd68
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/notes/my_forkpty.py
@@ -0,0 +1,89 @@
+import os, fcntl, termios
+import time
+
+def my_forkpty():
+
+    (master_fd, slave_fd) = os.openpty()
+
+    if (master_fd < 0  or  slave_fd < 0):
+        raise ExceptionPexpect("Forkpty failed")
+
+    # slave_name = ptsname(master_fd);
+
+    pid = os.fork();
+    if pid == -1:
+        raise ExceptionPexpect("Forkpty failed")
+    elif pid == 0: # Child
+        if hasattr(termios, 'TIOCNOTTY'):
+        #        Some platforms require an explicit detach of the
+        #        current controlling tty before closing stdin, stdout, stderr.
+        #        OpenBSD says that this is obsolete, but doesn't hurt.
+            try:
+                fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
+            except:
+                pass
+            else: #if fd >= 0:
+                fcntl.ioctl(fd, termios.TIOCNOTTY, 0)
+                os.close(fd)
+
+        # The setsid() system call will place the process into its own session
+        # which has the effect of disassociating it from the controlling terminal.
+        # This is known to be true for OpenBSD.
+        os.setsid()
+        # except:            return posix_error();
+
+        # Verify that we are disconnected from the controlling tty.
+        try:
+            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
+            os.close(fd)
+            raise ExceptionPexpect("Forkpty failed")
+        except:
+            pass
+        if 'TIOCSCTTY' in dir(termios):
+            # Make the pseudo terminal the controlling terminal for this process
+            # (the process must not currently have a controlling terminal).
+            if fcntl.ioctl(slave_fd, termios.TIOCSCTTY, '') < 0:
+                raise ExceptionPexpect("Forkpty failed")
+
+#        # Verify that we can open to the slave pty file. */
+#        fd = os.open(slave_name, os.O_RDWR);
+#        if fd < 0:
+#            raise ExceptionPexpect("Forkpty failed")
+#        else:
+#            os.close(fd);
+
+        # Verify that we now have a controlling tty.
+        fd = os.open("/dev/tty", os.O_WRONLY)
+        if fd < 0:
+            raise ExceptionPexpect("This process could not get a controlling tty.")
+        else:
+            os.close(fd)
+
+        os.close(master_fd)
+        os.dup2(slave_fd, 0)
+        os.dup2(slave_fd, 1)
+        os.dup2(slave_fd, 2)
+        if slave_fd > 2:
+            os.close(slave_fd)
+        pid = 0
+
+    else:
+        # PARENT 
+        os.close(slave_fd);
+
+    if pid == -1:
+        raise ExceptionPexpect("This process could not get a controlling tty.")
+#    if (pid == 0)
+#        PyOS_AfterFork();
+
+    return (pid, master_fd)
+
+pid, fd = my_forkpty ()
+if pid == 0: # child
+    print 'I am not a robot!'
+else:
+    print '(pid, fd) = (%d, %d)' % (pid, fd)
+    time.sleep(1) # Give the child a chance to print.
+    print 'Robots always say:', os.read(fd,100)
+    os.close(fd)
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/notes/notes.txt b/lldb/third_party/Python/module/pexpect-4.6/notes/notes.txt
new file mode 100644
index 00000000000..8ff6cfe29da
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/notes/notes.txt
@@ -0,0 +1,50 @@
+
+####################
+#
+#        NOTES
+#
+####################
+
+##    def send_human(self, text, delay_min = 0, delay_max = 1):
+##        pass
+##    def spawn2(self, command, args):
+##        """return pid, fd_stdio, fd_stderr
+##        """
+##        pass
+
+
+# Reason for double fork:
+# http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC15
+# Reason for ptys:
+# http://www.erlenstar.demon.co.uk/unix/faq_4.html#SEC52
+
+# Nonblocking on Win32?
+# Research this as a way to maybe make pipe work for Win32.
+# http://groups.google.com/groups?q=setraw+tty&hl=en&selm=uvgpvisvk.fsf%40roundpoint.com&rnum=7
+# 
+#    if istty:
+#        if os.name=='posix':
+#            import tty
+#            tty.setraw(sys.stdin.fileno())
+#        elif os.name=='nt':
+#            import win32file, win32con
+#            hstdin = win32file._get_osfhandle(sys.stdin.fileno())
+#            modes = (win32file.GetConsoleMode(hstdin)
+#                     & ~(win32con.ENABLE_LINE_INPUT
+#                         |win32con.ENABLE_ECHO_INPUT))
+#            win32file.SetConsoleMode(hstdin, modes)
+
+# Basic documentation:
+#       Explain use of lists of patterns and return index.
+#       Explain exceptions for non-handled special cases like EOF
+
+# Test bad fork
+# Test ENOENT. In other words, no more TTY devices.
+
+#GLOBAL_SIGCHLD_RECEIVED = 0
+#def childdied (signum, frame):
+#    print 'Signal handler called with signal', signum
+#    frame.f_globals['pexpect'].GLOBAL_SIGCHLD_RECEIVED = 1
+#    print str(frame.f_globals['pexpect'].GLOBAL_SIGCHLD_RECEIVED)
+#    GLOBAL_SIGCHLD_RECEIVED = 1
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/notes/posixmodule.c.diff b/lldb/third_party/Python/module/pexpect-4.6/notes/posixmodule.c.diff
new file mode 100644
index 00000000000..3bea1f9cba9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/notes/posixmodule.c.diff
@@ -0,0 +1,233 @@
+*** Python-2.2.1.orig/Modules/posixmodule.c	Tue Mar 12 16:38:31 2002
+--- Python-2.2.1/Modules/posixmodule.c	Tue May 21 01:16:29 2002
+***************
+*** 1904,1910 ****
+  }
+  #endif
+  
+! #if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY)
+  #ifdef HAVE_PTY_H
+  #include <pty.h>
+  #else
+--- 1904,1913 ----
+  }
+  #endif
+  
+! #if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) || defined(sun)
+! #ifdef sun
+! #include <sys/stropts.h>
+! #endif
+  #ifdef HAVE_PTY_H
+  #include <pty.h>
+  #else
+***************
+*** 1914,1920 ****
+  #endif /* HAVE_PTY_H */
+  #endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) */
+  
+! #if defined(HAVE_OPENPTY) || defined(HAVE__GETPTY)
+  static char posix_openpty__doc__[] =
+  "openpty() -> (master_fd, slave_fd)\n\
+  Open a pseudo-terminal, returning open fd's for both master and slave end.\n";
+--- 1917,1923 ----
+  #endif /* HAVE_PTY_H */
+  #endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) */
+  
+! #if defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) || defined(sun)
+  static char posix_openpty__doc__[] =
+  "openpty() -> (master_fd, slave_fd)\n\
+  Open a pseudo-terminal, returning open fd's for both master and slave end.\n";
+***************
+*** 1925,1932 ****
+  	int master_fd, slave_fd;
+  #ifndef HAVE_OPENPTY
+  	char * slave_name;
+  #endif
+! 
+  	if (!PyArg_ParseTuple(args, ":openpty"))
+  		return NULL;
+  
+--- 1928,1941 ----
+  	int master_fd, slave_fd;
+  #ifndef HAVE_OPENPTY
+  	char * slave_name;
++ #ifdef sun
++         void *sig_saved;
+  #endif
+! #endif
+! #if !defined(HAVE_OPENPTY) && !defined(HAVE__GETPTY) && defined(sun)
+!         extern char *ptsname();
+! #endif
+!         
+  	if (!PyArg_ParseTuple(args, ":openpty"))
+  		return NULL;
+  
+***************
+*** 1933,1939 ****
+  #ifdef HAVE_OPENPTY
+  	if (openpty(&master_fd, &slave_fd, NULL, NULL, NULL) != 0)
+  		return posix_error();
+! #else
+  	slave_name = _getpty(&master_fd, O_RDWR, 0666, 0);
+  	if (slave_name == NULL)
+  		return posix_error();
+--- 1942,1948 ----
+  #ifdef HAVE_OPENPTY
+  	if (openpty(&master_fd, &slave_fd, NULL, NULL, NULL) != 0)
+  		return posix_error();
+! #elif HAVE__GETPTY
+  	slave_name = _getpty(&master_fd, O_RDWR, 0666, 0);
+  	if (slave_name == NULL)
+  		return posix_error();
+***************
+*** 1941,1946 ****
+--- 1950,1966 ----
+  	slave_fd = open(slave_name, O_RDWR);
+  	if (slave_fd < 0)
+  		return posix_error();
++ #else
++         master_fd = open("/dev/ptmx", O_RDWR|O_NOCTTY);  /* open master */
++         sig_saved = signal(SIGCHLD, SIG_DFL);
++         grantpt(master_fd);                     /* change permission of   slave */
++         unlockpt(master_fd);                    /* unlock slave */
++         signal(SIGCHLD,sig_saved);
++         slave_name = ptsname(master_fd);         /* get name of slave */
++         slave_fd = open(slave_name, O_RDWR);    /* open slave */
++         ioctl(slave_fd, I_PUSH, "ptem");       /* push ptem */
++         ioctl(slave_fd, I_PUSH, "ldterm");     /* push ldterm*/
++         ioctl(slave_fd, I_PUSH, "ttcompat");     /* push ttcompat*/
+  #endif /* HAVE_OPENPTY */
+  
+  	return Py_BuildValue("(ii)", master_fd, slave_fd);
+***************
+*** 1948,1954 ****
+  }
+  #endif /* defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) */
+  
+! #ifdef HAVE_FORKPTY
+  static char posix_forkpty__doc__[] =
+  "forkpty() -> (pid, master_fd)\n\
+  Fork a new process with a new pseudo-terminal as controlling tty.\n\n\
+--- 1968,1974 ----
+  }
+  #endif /* defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) */
+  
+! #if defined(HAVE_FORKPTY) || defined(sun)
+  static char posix_forkpty__doc__[] =
+  "forkpty() -> (pid, master_fd)\n\
+  Fork a new process with a new pseudo-terminal as controlling tty.\n\n\
+***************
+*** 1959,1968 ****
+--- 1979,2067 ----
+  posix_forkpty(PyObject *self, PyObject *args)
+  {
+  	int master_fd, pid;
++ #if defined(sun)
++         int slave;
++ 	char * slave_name;
++         void *sig_saved;
++         int fd;
++ #endif
+  	
+  	if (!PyArg_ParseTuple(args, ":forkpty"))
+  		return NULL;
++ #if defined(sun)
++         master_fd = open("/dev/ptmx", O_RDWR|O_NOCTTY);  /* open master */
++         sig_saved = signal(SIGCHLD, SIG_DFL);
++         grantpt(master_fd);                     /* change permission of   slave */
++         unlockpt(master_fd);                    /* unlock slave */
++         signal(SIGCHLD,sig_saved);
++         slave_name = ptsname(master_fd);         /* get name of slave */
++         slave = open(slave_name, O_RDWR);    /* open slave */
++         ioctl(slave, I_PUSH, "ptem");       /* push ptem */
++         ioctl(slave, I_PUSH, "ldterm");     /* push ldterm*/
++         ioctl(slave, I_PUSH, "ttcompat");     /* push ttcompat*/
++         if (master_fd < 0 || slave < 0)
++         {
++             return posix_error();
++         }
++ 	switch (pid = fork()) {
++ 	case -1:	
++             return posix_error();
++ 	case 0:
++             /* First disconnect from the old controlling tty. */
++ #ifdef TIOCNOTTY
++             fd = open("/dev/tty", O_RDWR | O_NOCTTY);
++             if (fd >= 0) {
++ 		(void) ioctl(fd, TIOCNOTTY, NULL);
++ 		close(fd);
++             }
++ #endif /* TIOCNOTTY */
++             if (setsid() < 0)
++ 		return posix_error();
++             
++             /*
++              * Verify that we are successfully disconnected from the controlling
++              * tty.
++              */
++             fd = open("/dev/tty", O_RDWR | O_NOCTTY);
++             if (fd >= 0) {
++ 		return posix_error();
++ 		close(fd);
++             }
++             /* Make it our controlling tty. */
++ #ifdef TIOCSCTTY
++             if (ioctl(slave, TIOCSCTTY, NULL) < 0)
++ 		return posix_error();
++ #endif /* TIOCSCTTY */
++             fd = open(slave_name, O_RDWR);
++             if (fd < 0) {
++ 		return posix_error();
++             } else {
++ 		close(fd);
++             }
++             /* Verify that we now have a controlling tty. */
++             fd = open("/dev/tty", O_WRONLY);
++             if (fd < 0)
++ 		return posix_error();
++             else {
++ 		close(fd);
++             }
++             (void) close(master_fd);
++             (void) dup2(slave, 0);
++             (void) dup2(slave, 1);
++             (void) dup2(slave, 2);
++             if (slave > 2)
++                 (void) close(slave);
++             pid = 0;
++             break;
++           defautlt:
++             /*
++              * parent
++              */
++             (void) close(slave);
++ 	}
++ #else
+  	pid = forkpty(&master_fd, NULL, NULL, NULL);
++ #endif
+  	if (pid == -1)
+  		return posix_error();
+  	if (pid == 0)
+***************
+*** 5607,5616 ****
+  #ifdef HAVE_FORK
+  	{"fork",	posix_fork, METH_VARARGS, posix_fork__doc__},
+  #endif /* HAVE_FORK */
+! #if defined(HAVE_OPENPTY) || defined(HAVE__GETPTY)
+  	{"openpty",	posix_openpty, METH_VARARGS, posix_openpty__doc__},
+  #endif /* HAVE_OPENPTY || HAVE__GETPTY */
+! #ifdef HAVE_FORKPTY
+  	{"forkpty",	posix_forkpty, METH_VARARGS, posix_forkpty__doc__},
+  #endif /* HAVE_FORKPTY */
+  #ifdef HAVE_GETEGID
+--- 5706,5715 ----
+  #ifdef HAVE_FORK
+  	{"fork",	posix_fork, METH_VARARGS, posix_fork__doc__},
+  #endif /* HAVE_FORK */
+! #if defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) || defined(sun)
+  	{"openpty",	posix_openpty, METH_VARARGS, posix_openpty__doc__},
+  #endif /* HAVE_OPENPTY || HAVE__GETPTY */
+! #if defined(HAVE_FORKPTY) || defined(sun)
+  	{"forkpty",	posix_forkpty, METH_VARARGS, posix_forkpty__doc__},
+  #endif /* HAVE_FORKPTY */
+  #ifdef HAVE_GETEGID
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/ANSI.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/ANSI.py
new file mode 100644
index 00000000000..1cd2e90e7ab
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/ANSI.py
@@ -0,0 +1,351 @@
+'''This implements an ANSI (VT100) terminal emulator as a subclass of screen.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+# references:
+#     http://en.wikipedia.org/wiki/ANSI_escape_code
+#     http://www.retards.org/terminals/vt102.html
+#     http://vt100.net/docs/vt102-ug/contents.html
+#     http://vt100.net/docs/vt220-rm/
+#     http://www.termsys.demon.co.uk/vtansi.htm
+
+from . import screen
+from . import FSM
+import string
+
+#
+# The 'Do.*' functions are helper functions for the ANSI class.
+#
+def DoEmit (fsm):
+
+    screen = fsm.memory[0]
+    screen.write_ch(fsm.input_symbol)
+
+def DoStartNumber (fsm):
+
+    fsm.memory.append (fsm.input_symbol)
+
+def DoBuildNumber (fsm):
+
+    ns = fsm.memory.pop()
+    ns = ns + fsm.input_symbol
+    fsm.memory.append (ns)
+
+def DoBackOne (fsm):
+
+    screen = fsm.memory[0]
+    screen.cursor_back ()
+
+def DoBack (fsm):
+
+    count = int(fsm.memory.pop())
+    screen = fsm.memory[0]
+    screen.cursor_back (count)
+
+def DoDownOne (fsm):
+
+    screen = fsm.memory[0]
+    screen.cursor_down ()
+
+def DoDown (fsm):
+
+    count = int(fsm.memory.pop())
+    screen = fsm.memory[0]
+    screen.cursor_down (count)
+
+def DoForwardOne (fsm):
+
+    screen = fsm.memory[0]
+    screen.cursor_forward ()
+
+def DoForward (fsm):
+
+    count = int(fsm.memory.pop())
+    screen = fsm.memory[0]
+    screen.cursor_forward (count)
+
+def DoUpReverse (fsm):
+
+    screen = fsm.memory[0]
+    screen.cursor_up_reverse()
+
+def DoUpOne (fsm):
+
+    screen = fsm.memory[0]
+    screen.cursor_up ()
+
+def DoUp (fsm):
+
+    count = int(fsm.memory.pop())
+    screen = fsm.memory[0]
+    screen.cursor_up (count)
+
+def DoHome (fsm):
+
+    c = int(fsm.memory.pop())
+    r = int(fsm.memory.pop())
+    screen = fsm.memory[0]
+    screen.cursor_home (r,c)
+
+def DoHomeOrigin (fsm):
+
+    c = 1
+    r = 1
+    screen = fsm.memory[0]
+    screen.cursor_home (r,c)
+
+def DoEraseDown (fsm):
+
+    screen = fsm.memory[0]
+    screen.erase_down()
+
+def DoErase (fsm):
+
+    arg = int(fsm.memory.pop())
+    screen = fsm.memory[0]
+    if arg == 0:
+        screen.erase_down()
+    elif arg == 1:
+        screen.erase_up()
+    elif arg == 2:
+        screen.erase_screen()
+
+def DoEraseEndOfLine (fsm):
+
+    screen = fsm.memory[0]
+    screen.erase_end_of_line()
+
+def DoEraseLine (fsm):
+
+    arg = int(fsm.memory.pop())
+    screen = fsm.memory[0]
+    if arg == 0:
+        screen.erase_end_of_line()
+    elif arg == 1:
+        screen.erase_start_of_line()
+    elif arg == 2:
+        screen.erase_line()
+
+def DoEnableScroll (fsm):
+
+    screen = fsm.memory[0]
+    screen.scroll_screen()
+
+def DoCursorSave (fsm):
+
+    screen = fsm.memory[0]
+    screen.cursor_save_attrs()
+
+def DoCursorRestore (fsm):
+
+    screen = fsm.memory[0]
+    screen.cursor_restore_attrs()
+
+def DoScrollRegion (fsm):
+
+    screen = fsm.memory[0]
+    r2 = int(fsm.memory.pop())
+    r1 = int(fsm.memory.pop())
+    screen.scroll_screen_rows (r1,r2)
+
+def DoMode (fsm):
+
+    screen = fsm.memory[0]
+    mode = fsm.memory.pop() # Should be 4
+    # screen.setReplaceMode ()
+
+def DoLog (fsm):
+
+    screen = fsm.memory[0]
+    fsm.memory = [screen]
+    fout = open ('log', 'a')
+    fout.write (fsm.input_symbol + ',' + fsm.current_state + '\n')
+    fout.close()
+
+class term (screen.screen):
+
+    '''This class is an abstract, generic terminal.
+    This does nothing. This is a placeholder that
+    provides a common base class for other terminals
+    such as an ANSI terminal. '''
+
+    def __init__ (self, r=24, c=80, *args, **kwargs):
+
+        screen.screen.__init__(self, r,c,*args,**kwargs)
+
+class ANSI (term):
+    '''This class implements an ANSI (VT100) terminal.
+    It is a stream filter that recognizes ANSI terminal
+    escape sequences and maintains the state of a screen object. '''
+
+    def __init__ (self, r=24,c=80,*args,**kwargs):
+
+        term.__init__(self,r,c,*args,**kwargs)
+
+        #self.screen = screen (24,80)
+        self.state = FSM.FSM ('INIT',[self])
+        self.state.set_default_transition (DoLog, 'INIT')
+        self.state.add_transition_any ('INIT', DoEmit, 'INIT')
+        self.state.add_transition ('\x1b', 'INIT', None, 'ESC')
+        self.state.add_transition_any ('ESC', DoLog, 'INIT')
+        self.state.add_transition ('(', 'ESC', None, 'G0SCS')
+        self.state.add_transition (')', 'ESC', None, 'G1SCS')
+        self.state.add_transition_list ('AB012', 'G0SCS', None, 'INIT')
+        self.state.add_transition_list ('AB012', 'G1SCS', None, 'INIT')
+        self.state.add_transition ('7', 'ESC', DoCursorSave, 'INIT')
+        self.state.add_transition ('8', 'ESC', DoCursorRestore, 'INIT')
+        self.state.add_transition ('M', 'ESC', DoUpReverse, 'INIT')
+        self.state.add_transition ('>', 'ESC', DoUpReverse, 'INIT')
+        self.state.add_transition ('<', 'ESC', DoUpReverse, 'INIT')
+        self.state.add_transition ('=', 'ESC', None, 'INIT') # Selects application keypad.
+        self.state.add_transition ('#', 'ESC', None, 'GRAPHICS_POUND')
+        self.state.add_transition_any ('GRAPHICS_POUND', None, 'INIT')
+        self.state.add_transition ('[', 'ESC', None, 'ELB')
+        # ELB means Escape Left Bracket. That is ^[[
+        self.state.add_transition ('H', 'ELB', DoHomeOrigin, 'INIT')
+        self.state.add_transition ('D', 'ELB', DoBackOne, 'INIT')
+        self.state.add_transition ('B', 'ELB', DoDownOne, 'INIT')
+        self.state.add_transition ('C', 'ELB', DoForwardOne, 'INIT')
+        self.state.add_transition ('A', 'ELB', DoUpOne, 'INIT')
+        self.state.add_transition ('J', 'ELB', DoEraseDown, 'INIT')
+        self.state.add_transition ('K', 'ELB', DoEraseEndOfLine, 'INIT')
+        self.state.add_transition ('r', 'ELB', DoEnableScroll, 'INIT')
+        self.state.add_transition ('m', 'ELB', self.do_sgr, 'INIT')
+        self.state.add_transition ('?', 'ELB', None, 'MODECRAP')
+        self.state.add_transition_list (string.digits, 'ELB', DoStartNumber, 'NUMBER_1')
+        self.state.add_transition_list (string.digits, 'NUMBER_1', DoBuildNumber, 'NUMBER_1')
+        self.state.add_transition ('D', 'NUMBER_1', DoBack, 'INIT')
+        self.state.add_transition ('B', 'NUMBER_1', DoDown, 'INIT')
+        self.state.add_transition ('C', 'NUMBER_1', DoForward, 'INIT')
+        self.state.add_transition ('A', 'NUMBER_1', DoUp, 'INIT')
+        self.state.add_transition ('J', 'NUMBER_1', DoErase, 'INIT')
+        self.state.add_transition ('K', 'NUMBER_1', DoEraseLine, 'INIT')
+        self.state.add_transition ('l', 'NUMBER_1', DoMode, 'INIT')
+        ### It gets worse... the 'm' code can have infinite number of
+        ### number;number;number before it. I've never seen more than two,
+        ### but the specs say it's allowed. crap!
+        self.state.add_transition ('m', 'NUMBER_1', self.do_sgr, 'INIT')
+        ### LED control. Same implementation problem as 'm' code.
+        self.state.add_transition ('q', 'NUMBER_1', self.do_decsca, 'INIT')
+
+        # \E[?47h switch to alternate screen
+        # \E[?47l restores to normal screen from alternate screen.
+        self.state.add_transition_list (string.digits, 'MODECRAP', DoStartNumber, 'MODECRAP_NUM')
+        self.state.add_transition_list (string.digits, 'MODECRAP_NUM', DoBuildNumber, 'MODECRAP_NUM')
+        self.state.add_transition ('l', 'MODECRAP_NUM', self.do_modecrap, 'INIT')
+        self.state.add_transition ('h', 'MODECRAP_NUM', self.do_modecrap, 'INIT')
+
+#RM   Reset Mode                Esc [ Ps l                   none
+        self.state.add_transition (';', 'NUMBER_1', None, 'SEMICOLON')
+        self.state.add_transition_any ('SEMICOLON', DoLog, 'INIT')
+        self.state.add_transition_list (string.digits, 'SEMICOLON', DoStartNumber, 'NUMBER_2')
+        self.state.add_transition_list (string.digits, 'NUMBER_2', DoBuildNumber, 'NUMBER_2')
+        self.state.add_transition_any ('NUMBER_2', DoLog, 'INIT')
+        self.state.add_transition ('H', 'NUMBER_2', DoHome, 'INIT')
+        self.state.add_transition ('f', 'NUMBER_2', DoHome, 'INIT')
+        self.state.add_transition ('r', 'NUMBER_2', DoScrollRegion, 'INIT')
+        ### It gets worse... the 'm' code can have infinite number of
+        ### number;number;number before it. I've never seen more than two,
+        ### but the specs say it's allowed. crap!
+        self.state.add_transition ('m', 'NUMBER_2', self.do_sgr, 'INIT')
+        ### LED control. Same problem as 'm' code.
+        self.state.add_transition ('q', 'NUMBER_2', self.do_decsca, 'INIT')
+        self.state.add_transition (';', 'NUMBER_2', None, 'SEMICOLON_X')
+
+        # Create a state for 'q' and 'm' which allows an infinite number of ignored numbers
+        self.state.add_transition_any ('SEMICOLON_X', DoLog, 'INIT')
+        self.state.add_transition_list (string.digits, 'SEMICOLON_X', DoStartNumber, 'NUMBER_X')
+        self.state.add_transition_list (string.digits, 'NUMBER_X', DoBuildNumber, 'NUMBER_X')
+        self.state.add_transition_any ('NUMBER_X', DoLog, 'INIT')
+        self.state.add_transition ('m', 'NUMBER_X', self.do_sgr, 'INIT')
+        self.state.add_transition ('q', 'NUMBER_X', self.do_decsca, 'INIT')
+        self.state.add_transition (';', 'NUMBER_X', None, 'SEMICOLON_X')
+
+    def process (self, c):
+        """Process a single character. Called by :meth:`write`."""
+        if isinstance(c, bytes):
+            c = self._decode(c)
+        self.state.process(c)
+
+    def process_list (self, l):
+
+        self.write(l)
+
+    def write (self, s):
+        """Process text, writing it to the virtual screen while handling
+        ANSI escape codes.
+        """
+        if isinstance(s, bytes):
+            s = self._decode(s)
+        for c in s:
+            self.process(c)
+
+    def flush (self):
+        pass
+
+    def write_ch (self, ch):
+        '''This puts a character at the current cursor position. The cursor
+        position is moved forward with wrap-around, but no scrolling is done if
+        the cursor hits the lower-right corner of the screen. '''
+
+        if isinstance(ch, bytes):
+            ch = self._decode(ch)
+
+        #\r and \n both produce a call to cr() and lf(), respectively.
+        ch = ch[0]
+
+        if ch == u'\r':
+            self.cr()
+            return
+        if ch == u'\n':
+            self.crlf()
+            return
+        if ch == chr(screen.BS):
+            self.cursor_back()
+            return
+        self.put_abs(self.cur_r, self.cur_c, ch)
+        old_r = self.cur_r
+        old_c = self.cur_c
+        self.cursor_forward()
+        if old_c == self.cur_c:
+            self.cursor_down()
+            if old_r != self.cur_r:
+                self.cursor_home (self.cur_r, 1)
+            else:
+                self.scroll_up ()
+                self.cursor_home (self.cur_r, 1)
+                self.erase_line()
+
+    def do_sgr (self, fsm):
+        '''Select Graphic Rendition, e.g. color. '''
+        screen = fsm.memory[0]
+        fsm.memory = [screen]
+
+    def do_decsca (self, fsm):
+        '''Select character protection attribute. '''
+        screen = fsm.memory[0]
+        fsm.memory = [screen]
+
+    def do_modecrap (self, fsm):
+        '''Handler for \x1b[?<number>h and \x1b[?<number>l. If anyone
+        wanted to actually use these, they'd need to add more states to the
+        FSM rather than just improve or override this method. '''
+        screen = fsm.memory[0]
+        fsm.memory = [screen]
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/FSM.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/FSM.py
new file mode 100644
index 00000000000..46b392ea08a
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/FSM.py
@@ -0,0 +1,334 @@
+#!/usr/bin/env python
+
+'''This module implements a Finite State Machine (FSM). In addition to state
+this FSM also maintains a user defined "memory". So this FSM can be used as a
+Push-down Automata (PDA) since a PDA is a FSM + memory.
+
+The following describes how the FSM works, but you will probably also need to
+see the example function to understand how the FSM is used in practice.
+
+You define an FSM by building tables of transitions. For a given input symbol
+the process() method uses these tables to decide what action to call and what
+the next state will be. The FSM has a table of transitions that associate:
+
+        (input_symbol, current_state) --> (action, next_state)
+
+Where "action" is a function you define. The symbols and states can be any
+objects. You use the add_transition() and add_transition_list() methods to add
+to the transition table. The FSM also has a table of transitions that
+associate:
+
+        (current_state) --> (action, next_state)
+
+You use the add_transition_any() method to add to this transition table. The
+FSM also has one default transition that is not associated with any specific
+input_symbol or state. You use the set_default_transition() method to set the
+default transition.
+
+When an action function is called it is passed a reference to the FSM. The
+action function may then access attributes of the FSM such as input_symbol,
+current_state, or "memory". The "memory" attribute can be any object that you
+want to pass along to the action functions. It is not used by the FSM itself.
+For parsing you would typically pass a list to be used as a stack.
+
+The processing sequence is as follows. The process() method is given an
+input_symbol to process. The FSM will search the table of transitions that
+associate:
+
+        (input_symbol, current_state) --> (action, next_state)
+
+If the pair (input_symbol, current_state) is found then process() will call the
+associated action function and then set the current state to the next_state.
+
+If the FSM cannot find a match for (input_symbol, current_state) it will then
+search the table of transitions that associate:
+
+        (current_state) --> (action, next_state)
+
+If the current_state is found then the process() method will call the
+associated action function and then set the current state to the next_state.
+Notice that this table lacks an input_symbol. It lets you define transitions
+for a current_state and ANY input_symbol. Hence, it is called the "any" table.
+Remember, it is always checked after first searching the table for a specific
+(input_symbol, current_state).
+
+For the case where the FSM did not match either of the previous two cases the
+FSM will try to use the default transition. If the default transition is
+defined then the process() method will call the associated action function and
+then set the current state to the next_state. This lets you define a default
+transition as a catch-all case. You can think of it as an exception handler.
+There can be only one default transition.
+
+Finally, if none of the previous cases are defined for an input_symbol and
+current_state then the FSM will raise an exception. This may be desirable, but
+you can always prevent this just by defining a default transition.
+
+Noah Spurrier 20020822
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+class ExceptionFSM(Exception):
+
+    '''This is the FSM Exception class.'''
+
+    def __init__(self, value):
+        self.value = value
+
+    def __str__(self):
+        return 'ExceptionFSM: ' + str(self.value)
+
+class FSM:
+
+    '''This is a Finite State Machine (FSM).
+    '''
+
+    def __init__(self, initial_state, memory=None):
+
+        '''This creates the FSM. You set the initial state here. The "memory"
+        attribute is any object that you want to pass along to the action
+        functions. It is not used by the FSM. For parsing you would typically
+        pass a list to be used as a stack. '''
+
+        # Map (input_symbol, current_state) --> (action, next_state).
+        self.state_transitions = {}
+        # Map (current_state) --> (action, next_state).
+        self.state_transitions_any = {}
+        self.default_transition = None
+
+        self.input_symbol = None
+        self.initial_state = initial_state
+        self.current_state = self.initial_state
+        self.next_state = None
+        self.action = None
+        self.memory = memory
+
+    def reset (self):
+
+        '''This sets the current_state to the initial_state and sets
+        input_symbol to None. The initial state was set by the constructor
+        __init__(). '''
+
+        self.current_state = self.initial_state
+        self.input_symbol = None
+
+    def add_transition (self, input_symbol, state, action=None, next_state=None):
+
+        '''This adds a transition that associates:
+
+                (input_symbol, current_state) --> (action, next_state)
+
+        The action may be set to None in which case the process() method will
+        ignore the action and only set the next_state. The next_state may be
+        set to None in which case the current state will be unchanged.
+
+        You can also set transitions for a list of symbols by using
+        add_transition_list(). '''
+
+        if next_state is None:
+            next_state = state
+        self.state_transitions[(input_symbol, state)] = (action, next_state)
+
+    def add_transition_list (self, list_input_symbols, state, action=None, next_state=None):
+
+        '''This adds the same transition for a list of input symbols.
+        You can pass a list or a string. Note that it is handy to use
+        string.digits, string.whitespace, string.letters, etc. to add
+        transitions that match character classes.
+
+        The action may be set to None in which case the process() method will
+        ignore the action and only set the next_state. The next_state may be
+        set to None in which case the current state will be unchanged. '''
+
+        if next_state is None:
+            next_state = state
+        for input_symbol in list_input_symbols:
+            self.add_transition (input_symbol, state, action, next_state)
+
+    def add_transition_any (self, state, action=None, next_state=None):
+
+        '''This adds a transition that associates:
+
+                (current_state) --> (action, next_state)
+
+        That is, any input symbol will match the current state.
+        The process() method checks the "any" state associations after it first
+        checks for an exact match of (input_symbol, current_state).
+
+        The action may be set to None in which case the process() method will
+        ignore the action and only set the next_state. The next_state may be
+        set to None in which case the current state will be unchanged. '''
+
+        if next_state is None:
+            next_state = state
+        self.state_transitions_any [state] = (action, next_state)
+
+    def set_default_transition (self, action, next_state):
+
+        '''This sets the default transition. This defines an action and
+        next_state if the FSM cannot find the input symbol and the current
+        state in the transition list and if the FSM cannot find the
+        current_state in the transition_any list. This is useful as a final
+        fall-through state for catching errors and undefined states.
+
+        The default transition can be removed by setting the attribute
+        default_transition to None. '''
+
+        self.default_transition = (action, next_state)
+
+    def get_transition (self, input_symbol, state):
+
+        '''This returns (action, next state) given an input_symbol and state.
+        This does not modify the FSM state, so calling this method has no side
+        effects. Normally you do not call this method directly. It is called by
+        process().
+
+        The sequence of steps to check for a defined transition goes from the
+        most specific to the least specific.
+
+        1. Check state_transitions[] that match exactly the tuple,
+            (input_symbol, state)
+
+        2. Check state_transitions_any[] that match (state)
+            In other words, match a specific state and ANY input_symbol.
+
+        3. Check if the default_transition is defined.
+            This catches any input_symbol and any state.
+            This is a handler for errors, undefined states, or defaults.
+
+        4. No transition was defined. If we get here then raise an exception.
+        '''
+
+        if (input_symbol, state) in self.state_transitions:
+            return self.state_transitions[(input_symbol, state)]
+        elif state in self.state_transitions_any:
+            return self.state_transitions_any[state]
+        elif self.default_transition is not None:
+            return self.default_transition
+        else:
+            raise ExceptionFSM ('Transition is undefined: (%s, %s).' %
+                (str(input_symbol), str(state)) )
+
+    def process (self, input_symbol):
+
+        '''This is the main method that you call to process input. This may
+        cause the FSM to change state and call an action. This method calls
+        get_transition() to find the action and next_state associated with the
+        input_symbol and current_state. If the action is None then the action
+        is not called and only the current state is changed. This method
+        processes one complete input symbol. You can process a list of symbols
+        (or a string) by calling process_list(). '''
+
+        self.input_symbol = input_symbol
+        (self.action, self.next_state) = self.get_transition (self.input_symbol, self.current_state)
+        if self.action is not None:
+            self.action (self)
+        self.current_state = self.next_state
+        self.next_state = None
+
+    def process_list (self, input_symbols):
+
+        '''This takes a list and sends each element to process(). The list may
+        be a string or any iterable object. '''
+
+        for s in input_symbols:
+            self.process (s)
+
+##############################################################################
+# The following is an example that demonstrates the use of the FSM class to
+# process an RPN expression. Run this module from the command line. You will
+# get a prompt > for input. Enter an RPN Expression. Numbers may be integers.
+# Operators are * / + - Use the = sign to evaluate and print the expression.
+# For example:
+#
+#    167 3 2 2 * * * 1 - =
+#
+# will print:
+#
+#    2003
+##############################################################################
+
+import sys
+import string
+
+PY3 = (sys.version_info[0] >= 3)
+
+#
+# These define the actions.
+# Note that "memory" is a list being used as a stack.
+#
+
+def BeginBuildNumber (fsm):
+    fsm.memory.append (fsm.input_symbol)
+
+def BuildNumber (fsm):
+    s = fsm.memory.pop ()
+    s = s + fsm.input_symbol
+    fsm.memory.append (s)
+
+def EndBuildNumber (fsm):
+    s = fsm.memory.pop ()
+    fsm.memory.append (int(s))
+
+def DoOperator (fsm):
+    ar = fsm.memory.pop()
+    al = fsm.memory.pop()
+    if fsm.input_symbol == '+':
+        fsm.memory.append (al + ar)
+    elif fsm.input_symbol == '-':
+        fsm.memory.append (al - ar)
+    elif fsm.input_symbol == '*':
+        fsm.memory.append (al * ar)
+    elif fsm.input_symbol == '/':
+        fsm.memory.append (al / ar)
+
+def DoEqual (fsm):
+    print(str(fsm.memory.pop()))
+
+def Error (fsm):
+    print('That does not compute.')
+    print(str(fsm.input_symbol))
+
+def main():
+
+    '''This is where the example starts and the FSM state transitions are
+    defined. Note that states are strings (such as 'INIT'). This is not
+    necessary, but it makes the example easier to read. '''
+
+    f = FSM ('INIT', [])
+    f.set_default_transition (Error, 'INIT')
+    f.add_transition_any  ('INIT', None, 'INIT')
+    f.add_transition      ('=',               'INIT',            DoEqual,          'INIT')
+    f.add_transition_list (string.digits,     'INIT',            BeginBuildNumber, 'BUILDING_NUMBER')
+    f.add_transition_list (string.digits,     'BUILDING_NUMBER', BuildNumber,      'BUILDING_NUMBER')
+    f.add_transition_list (string.whitespace, 'BUILDING_NUMBER', EndBuildNumber,   'INIT')
+    f.add_transition_list ('+-*/',            'INIT',            DoOperator,       'INIT')
+
+    print()
+    print('Enter an RPN Expression.')
+    print('Numbers may be integers. Operators are * / + -')
+    print('Use the = sign to evaluate and print the expression.')
+    print('For example: ')
+    print('    167 3 2 2 * * * 1 - =')
+    inputstr = (input if PY3 else raw_input)('> ')  # analysis:ignore
+    f.process_list(inputstr)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/__init__.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/__init__.py
new file mode 100644
index 00000000000..2a18d1911a9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/__init__.py
@@ -0,0 +1,85 @@
+'''Pexpect is a Python module for spawning child applications and controlling
+them automatically. Pexpect can be used for automating interactive applications
+such as ssh, ftp, passwd, telnet, etc. It can be used to a automate setup
+scripts for duplicating software package installations on different servers. It
+can be used for automated software testing. Pexpect is in the spirit of Don
+Libes' Expect, but Pexpect is pure Python. Other Expect-like modules for Python
+require TCL and Expect or require C extensions to be compiled. Pexpect does not
+use C, Expect, or TCL extensions. It should work on any platform that supports
+the standard Python pty module. The Pexpect interface focuses on ease of use so
+that simple tasks are easy.
+
+There are two main interfaces to the Pexpect system; these are the function,
+run() and the class, spawn. The spawn class is more powerful. The run()
+function is simpler than spawn, and is good for quickly calling program. When
+you call the run() function it executes a given program and then returns the
+output. This is a handy replacement for os.system().
+
+For example::
+
+    pexpect.run('ls -la')
+
+The spawn class is the more powerful interface to the Pexpect system. You can
+use this to spawn a child program then interact with it by sending input and
+expecting responses (waiting for patterns in the child's output).
+
+For example::
+
+    child = pexpect.spawn('scp foo user@example.com:.')
+    child.expect('Password:')
+    child.sendline(mypassword)
+
+This works even for commands that ask for passwords or other input outside of
+the normal stdio streams. For example, ssh reads input directly from the TTY
+device which bypasses stdin.
+
+Credits: Noah Spurrier, Richard Holden, Marco Molteni, Kimberley Burchett,
+Robert Stone, Hartmut Goebel, Chad Schroeder, Erick Tryzelaar, Dave Kirby, Ids
+vander Molen, George Todd, Noel Taylor, Nicolas D. Cesar, Alexander Gattin,
+Jacques-Etienne Baudoux, Geoffrey Marshall, Francisco Lourenco, Glen Mabey,
+Karthik Gurusamy, Fernando Perez, Corey Minyard, Jon Cohen, Guillaume
+Chazarain, Andrew Ryan, Nick Craig-Wood, Andrew Stone, Jorgen Grahn, John
+Spiegel, Jan Grant, and Shane Kerr. Let me know if I forgot anyone.
+
+Pexpect is free, open source, and all that good stuff.
+http://pexpect.sourceforge.net/
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+import sys
+PY3 = (sys.version_info[0] >= 3)
+
+from .exceptions import ExceptionPexpect, EOF, TIMEOUT
+from .utils import split_command_line, which, is_executable_file
+from .expect import Expecter, searcher_re, searcher_string
+
+if sys.platform != 'win32':
+    # On Unix, these are available at the top level for backwards compatibility
+    from .pty_spawn import spawn, spawnu
+    from .run import run, runu
+
+__version__ = '4.6.0'
+__revision__ = ''
+__all__ = ['ExceptionPexpect', 'EOF', 'TIMEOUT', 'spawn', 'spawnu', 'run', 'runu',
+           'which', 'split_command_line', '__version__', '__revision__']
+
+
+
+# vim: set shiftround expandtab tabstop=4 shiftwidth=4 ft=python autoindent :
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/_async.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/_async.py
new file mode 100644
index 00000000000..bdd515b1f50
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/_async.py
@@ -0,0 +1,87 @@
+import asyncio
+import errno
+
+from pexpect import EOF
+
+@asyncio.coroutine
+def expect_async(expecter, timeout=None):
+    # First process data that was previously read - if it maches, we don't need
+    # async stuff.
+    previously_read = expecter.spawn.buffer
+    expecter.spawn._buffer = expecter.spawn.buffer_type()
+    expecter.spawn._before = expecter.spawn.buffer_type()
+    idx = expecter.new_data(previously_read)
+    if idx is not None:
+        return idx
+    if not expecter.spawn.async_pw_transport:
+        pw = PatternWaiter()
+        pw.set_expecter(expecter)
+        transport, pw = yield from asyncio.get_event_loop()\
+            .connect_read_pipe(lambda: pw, expecter.spawn)
+        expecter.spawn.async_pw_transport = pw, transport
+    else:
+        pw, transport = expecter.spawn.async_pw_transport
+        pw.set_expecter(expecter)
+        transport.resume_reading()
+    try:
+        return (yield from asyncio.wait_for(pw.fut, timeout))
+    except asyncio.TimeoutError as e:
+        transport.pause_reading()
+        return expecter.timeout(e)
+
+
+class PatternWaiter(asyncio.Protocol):
+    transport = None
+
+    def set_expecter(self, expecter):
+        self.expecter = expecter
+        self.fut = asyncio.Future()
+
+    def found(self, result):
+        if not self.fut.done():
+            self.fut.set_result(result)
+            self.transport.pause_reading()
+    
+    def error(self, exc):
+        if not self.fut.done():
+            self.fut.set_exception(exc)
+            self.transport.pause_reading()
+
+    def connection_made(self, transport):
+        self.transport = transport
+    
+    def data_received(self, data):
+        spawn = self.expecter.spawn
+        s = spawn._decoder.decode(data)
+        spawn._log(s, 'read')
+
+        if self.fut.done():
+            spawn._buffer.write(s)
+            return
+
+        try:
+            index = self.expecter.new_data(s)
+            if index is not None:
+                # Found a match
+                self.found(index)
+        except Exception as e:
+            self.expecter.errored()
+            self.error(e)
+    
+    def eof_received(self):
+        # N.B. If this gets called, async will close the pipe (the spawn object)
+        # for us
+        try:
+            self.expecter.spawn.flag_eof = True
+            index = self.expecter.eof()
+        except EOF as e:
+            self.error(e)
+        else:
+            self.found(index)
+    
+    def connection_lost(self, exc):
+        if isinstance(exc, OSError) and exc.errno == errno.EIO:
+            # We may get here without eof_received being called, e.g on Linux
+            self.eof_received()
+        elif exc is not None:
+            self.error(exc)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/bashrc.sh b/lldb/third_party/Python/module/pexpect-4.6/pexpect/bashrc.sh
new file mode 100644
index 00000000000..c734ac90b85
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/bashrc.sh
@@ -0,0 +1,16 @@
+# Different platforms have different names for the systemwide bashrc
+if [[ -f /etc/bashrc ]]; then
+  source /etc/bashrc
+fi
+if [[ -f /etc/bash.bashrc ]]; then
+  source /etc/bash.bashrc
+fi
+if [[ -f ~/.bashrc ]]; then
+  source ~/.bashrc
+fi
+
+# Reset PS1 so pexpect can find it
+PS1="$"
+
+# Unset PROMPT_COMMAND, so that it can't change PS1 to something unexpected.
+unset PROMPT_COMMAND
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/exceptions.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/exceptions.py
new file mode 100644
index 00000000000..cb360f02614
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/exceptions.py
@@ -0,0 +1,35 @@
+"""Exception classes used by Pexpect"""
+
+import traceback
+import sys
+
+class ExceptionPexpect(Exception):
+    '''Base class for all exceptions raised by this module.
+    '''
+
+    def __init__(self, value):
+        super(ExceptionPexpect, self).__init__(value)
+        self.value = value
+
+    def __str__(self):
+        return str(self.value)
+
+    def get_trace(self):
+        '''This returns an abbreviated stack trace with lines that only concern
+        the caller. In other words, the stack trace inside the Pexpect module
+        is not included. '''
+
+        tblist = traceback.extract_tb(sys.exc_info()[2])
+        tblist = [item for item in tblist if ('pexpect/__init__' not in item[0])
+                                           and ('pexpect/expect' not in item[0])]
+        tblist = traceback.format_list(tblist)
+        return ''.join(tblist)
+
+
+class EOF(ExceptionPexpect):
+    '''Raised when EOF is read from a child.
+    This usually means the child has exited.'''
+
+
+class TIMEOUT(ExceptionPexpect):
+    '''Raised when a read time exceeds the timeout. '''
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/expect.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/expect.py
new file mode 100644
index 00000000000..1c0275b4853
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/expect.py
@@ -0,0 +1,306 @@
+import time
+
+from .exceptions import EOF, TIMEOUT
+
+class Expecter(object):
+    def __init__(self, spawn, searcher, searchwindowsize=-1):
+        self.spawn = spawn
+        self.searcher = searcher
+        if searchwindowsize == -1:
+            searchwindowsize = spawn.searchwindowsize
+        self.searchwindowsize = searchwindowsize
+
+    def new_data(self, data):
+        spawn = self.spawn
+        searcher = self.searcher
+
+        pos = spawn._buffer.tell()
+        spawn._buffer.write(data)
+        spawn._before.write(data)
+
+        # determine which chunk of data to search; if a windowsize is
+        # specified, this is the *new* data + the preceding <windowsize> bytes
+        if self.searchwindowsize:
+            spawn._buffer.seek(max(0, pos - self.searchwindowsize))
+            window = spawn._buffer.read(self.searchwindowsize + len(data))
+        else:
+            # otherwise, search the whole buffer (really slow for large datasets)
+            window = spawn.buffer
+        index = searcher.search(window, len(data))
+        if index >= 0:
+            spawn._buffer = spawn.buffer_type()
+            spawn._buffer.write(window[searcher.end:])
+            spawn.before = spawn._before.getvalue()[0:-(len(window) - searcher.start)]
+            spawn._before = spawn.buffer_type()
+            spawn.after = window[searcher.start: searcher.end]
+            spawn.match = searcher.match
+            spawn.match_index = index
+            # Found a match
+            return index
+        elif self.searchwindowsize:
+            spawn._buffer = spawn.buffer_type()
+            spawn._buffer.write(window)
+
+    def eof(self, err=None):
+        spawn = self.spawn
+
+        spawn.before = spawn.buffer
+        spawn._buffer = spawn.buffer_type()
+        spawn._before = spawn.buffer_type()
+        spawn.after = EOF
+        index = self.searcher.eof_index
+        if index >= 0:
+            spawn.match = EOF
+            spawn.match_index = index
+            return index
+        else:
+            spawn.match = None
+            spawn.match_index = None
+            msg = str(spawn)
+            msg += '\nsearcher: %s' % self.searcher
+            if err is not None:
+                msg = str(err) + '\n' + msg
+            raise EOF(msg)
+    
+    def timeout(self, err=None):
+        spawn = self.spawn
+
+        spawn.before = spawn.buffer
+        spawn.after = TIMEOUT
+        index = self.searcher.timeout_index
+        if index >= 0:
+            spawn.match = TIMEOUT
+            spawn.match_index = index
+            return index
+        else:
+            spawn.match = None
+            spawn.match_index = None
+            msg = str(spawn)
+            msg += '\nsearcher: %s' % self.searcher
+            if err is not None:
+                msg = str(err) + '\n' + msg
+            raise TIMEOUT(msg)
+
+    def errored(self):
+        spawn = self.spawn
+        spawn.before = spawn.buffer
+        spawn.after = None
+        spawn.match = None
+        spawn.match_index = None
+    
+    def expect_loop(self, timeout=-1):
+        """Blocking expect"""
+        spawn = self.spawn
+
+        if timeout is not None:
+            end_time = time.time() + timeout
+
+        try:
+            incoming = spawn.buffer
+            spawn._buffer = spawn.buffer_type()
+            spawn._before = spawn.buffer_type()
+            while True:
+                idx = self.new_data(incoming)
+                # Keep reading until exception or return.
+                if idx is not None:
+                    return idx
+                # No match at this point
+                if (timeout is not None) and (timeout < 0):
+                    return self.timeout()
+                # Still have time left, so read more data
+                incoming = spawn.read_nonblocking(spawn.maxread, timeout)
+                if self.spawn.delayafterread is not None:
+                    time.sleep(self.spawn.delayafterread)
+                if timeout is not None:
+                    timeout = end_time - time.time()
+        except EOF as e:
+            return self.eof(e)
+        except TIMEOUT as e:
+            return self.timeout(e)
+        except:
+            self.errored()
+            raise
+
+
+class searcher_string(object):
+    '''This is a plain string search helper for the spawn.expect_any() method.
+    This helper class is for speed. For more powerful regex patterns
+    see the helper class, searcher_re.
+
+    Attributes:
+
+        eof_index     - index of EOF, or -1
+        timeout_index - index of TIMEOUT, or -1
+
+    After a successful match by the search() method the following attributes
+    are available:
+
+        start - index into the buffer, first byte of match
+        end   - index into the buffer, first byte after match
+        match - the matching string itself
+
+    '''
+
+    def __init__(self, strings):
+        '''This creates an instance of searcher_string. This argument 'strings'
+        may be a list; a sequence of strings; or the EOF or TIMEOUT types. '''
+
+        self.eof_index = -1
+        self.timeout_index = -1
+        self._strings = []
+        for n, s in enumerate(strings):
+            if s is EOF:
+                self.eof_index = n
+                continue
+            if s is TIMEOUT:
+                self.timeout_index = n
+                continue
+            self._strings.append((n, s))
+
+    def __str__(self):
+        '''This returns a human-readable string that represents the state of
+        the object.'''
+
+        ss = [(ns[0], '    %d: %r' % ns) for ns in self._strings]
+        ss.append((-1, 'searcher_string:'))
+        if self.eof_index >= 0:
+            ss.append((self.eof_index, '    %d: EOF' % self.eof_index))
+        if self.timeout_index >= 0:
+            ss.append((self.timeout_index,
+                '    %d: TIMEOUT' % self.timeout_index))
+        ss.sort()
+        ss = list(zip(*ss))[1]
+        return '\n'.join(ss)
+
+    def search(self, buffer, freshlen, searchwindowsize=None):
+        '''This searches 'buffer' for the first occurrence of one of the search
+        strings.  'freshlen' must indicate the number of bytes at the end of
+        'buffer' which have not been searched before. It helps to avoid
+        searching the same, possibly big, buffer over and over again.
+
+        See class spawn for the 'searchwindowsize' argument.
+
+        If there is a match this returns the index of that string, and sets
+        'start', 'end' and 'match'. Otherwise, this returns -1. '''
+
+        first_match = None
+
+        # 'freshlen' helps a lot here. Further optimizations could
+        # possibly include:
+        #
+        # using something like the Boyer-Moore Fast String Searching
+        # Algorithm; pre-compiling the search through a list of
+        # strings into something that can scan the input once to
+        # search for all N strings; realize that if we search for
+        # ['bar', 'baz'] and the input is '...foo' we need not bother
+        # rescanning until we've read three more bytes.
+        #
+        # Sadly, I don't know enough about this interesting topic. /grahn
+
+        for index, s in self._strings:
+            if searchwindowsize is None:
+                # the match, if any, can only be in the fresh data,
+                # or at the very end of the old data
+                offset = -(freshlen + len(s))
+            else:
+                # better obey searchwindowsize
+                offset = -searchwindowsize
+            n = buffer.find(s, offset)
+            if n >= 0 and (first_match is None or n < first_match):
+                first_match = n
+                best_index, best_match = index, s
+        if first_match is None:
+            return -1
+        self.match = best_match
+        self.start = first_match
+        self.end = self.start + len(self.match)
+        return best_index
+
+
+class searcher_re(object):
+    '''This is regular expression string search helper for the
+    spawn.expect_any() method. This helper class is for powerful
+    pattern matching. For speed, see the helper class, searcher_string.
+
+    Attributes:
+
+        eof_index     - index of EOF, or -1
+        timeout_index - index of TIMEOUT, or -1
+
+    After a successful match by the search() method the following attributes
+    are available:
+
+        start - index into the buffer, first byte of match
+        end   - index into the buffer, first byte after match
+        match - the re.match object returned by a successful re.search
+
+    '''
+
+    def __init__(self, patterns):
+        '''This creates an instance that searches for 'patterns' Where
+        'patterns' may be a list or other sequence of compiled regular
+        expressions, or the EOF or TIMEOUT types.'''
+
+        self.eof_index = -1
+        self.timeout_index = -1
+        self._searches = []
+        for n, s in zip(list(range(len(patterns))), patterns):
+            if s is EOF:
+                self.eof_index = n
+                continue
+            if s is TIMEOUT:
+                self.timeout_index = n
+                continue
+            self._searches.append((n, s))
+
+    def __str__(self):
+        '''This returns a human-readable string that represents the state of
+        the object.'''
+
+        #ss = [(n, '    %d: re.compile("%s")' %
+        #    (n, repr(s.pattern))) for n, s in self._searches]
+        ss = list()
+        for n, s in self._searches:
+            ss.append((n, '    %d: re.compile(%r)' % (n, s.pattern)))
+        ss.append((-1, 'searcher_re:'))
+        if self.eof_index >= 0:
+            ss.append((self.eof_index, '    %d: EOF' % self.eof_index))
+        if self.timeout_index >= 0:
+            ss.append((self.timeout_index, '    %d: TIMEOUT' %
+                self.timeout_index))
+        ss.sort()
+        ss = list(zip(*ss))[1]
+        return '\n'.join(ss)
+
+    def search(self, buffer, freshlen, searchwindowsize=None):
+        '''This searches 'buffer' for the first occurrence of one of the regular
+        expressions. 'freshlen' must indicate the number of bytes at the end of
+        'buffer' which have not been searched before.
+
+        See class spawn for the 'searchwindowsize' argument.
+
+        If there is a match this returns the index of that string, and sets
+        'start', 'end' and 'match'. Otherwise, returns -1.'''
+
+        first_match = None
+        # 'freshlen' doesn't help here -- we cannot predict the
+        # length of a match, and the re module provides no help.
+        if searchwindowsize is None:
+            searchstart = 0
+        else:
+            searchstart = max(0, len(buffer) - searchwindowsize)
+        for index, s in self._searches:
+            match = s.search(buffer, searchstart)
+            if match is None:
+                continue
+            n = match.start()
+            if first_match is None or n < first_match:
+                first_match = n
+                the_match = match
+                best_index = index
+        if first_match is None:
+            return -1
+        self.start = first_match
+        self.match = the_match
+        self.end = self.match.end()
+        return best_index
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/fdpexpect.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/fdpexpect.py
new file mode 100644
index 00000000000..cddd50e1005
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/fdpexpect.py
@@ -0,0 +1,148 @@
+'''This is like pexpect, but it will work with any file descriptor that you
+pass it. You are responsible for opening and close the file descriptor.
+This allows you to use Pexpect with sockets and named pipes (FIFOs).
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from .spawnbase import SpawnBase
+from .exceptions import ExceptionPexpect, TIMEOUT
+from .utils import select_ignore_interrupts, poll_ignore_interrupts
+import os
+
+__all__ = ['fdspawn']
+
+class fdspawn(SpawnBase):
+    '''This is like pexpect.spawn but allows you to supply your own open file
+    descriptor. For example, you could use it to read through a file looking
+    for patterns, or to control a modem or serial device. '''
+
+    def __init__ (self, fd, args=None, timeout=30, maxread=2000, searchwindowsize=None,
+                  logfile=None, encoding=None, codec_errors='strict', use_poll=False):
+        '''This takes a file descriptor (an int) or an object that support the
+        fileno() method (returning an int). All Python file-like objects
+        support fileno(). '''
+
+        if type(fd) != type(0) and hasattr(fd, 'fileno'):
+            fd = fd.fileno()
+
+        if type(fd) != type(0):
+            raise ExceptionPexpect('The fd argument is not an int. If this is a command string then maybe you want to use pexpect.spawn.')
+
+        try: # make sure fd is a valid file descriptor
+            os.fstat(fd)
+        except OSError:
+            raise ExceptionPexpect('The fd argument is not a valid file descriptor.')
+
+        self.args = None
+        self.command = None
+        SpawnBase.__init__(self, timeout, maxread, searchwindowsize, logfile,
+                           encoding=encoding, codec_errors=codec_errors)
+        self.child_fd = fd
+        self.own_fd = False
+        self.closed = False
+        self.name = '<file descriptor %d>' % fd
+        self.use_poll = use_poll
+
+    def close (self):
+        """Close the file descriptor.
+
+        Calling this method a second time does nothing, but if the file
+        descriptor was closed elsewhere, :class:`OSError` will be raised.
+        """
+        if self.child_fd == -1:
+            return
+
+        self.flush()
+        os.close(self.child_fd)
+        self.child_fd = -1
+        self.closed = True
+
+    def isalive (self):
+        '''This checks if the file descriptor is still valid. If :func:`os.fstat`
+        does not raise an exception then we assume it is alive. '''
+
+        if self.child_fd == -1:
+            return False
+        try:
+            os.fstat(self.child_fd)
+            return True
+        except:
+            return False
+
+    def terminate (self, force=False):  # pragma: no cover
+        '''Deprecated and invalid. Just raises an exception.'''
+        raise ExceptionPexpect('This method is not valid for file descriptors.')
+
+    # These four methods are left around for backwards compatibility, but not
+    # documented as part of fdpexpect. You're encouraged to use os.write
+    # directly.
+    def send(self, s):
+        "Write to fd, return number of bytes written"
+        s = self._coerce_send_string(s)
+        self._log(s, 'send')
+
+        b = self._encoder.encode(s, final=False)
+        return os.write(self.child_fd, b)
+
+    def sendline(self, s):
+        "Write to fd with trailing newline, return number of bytes written"
+        s = self._coerce_send_string(s)
+        return self.send(s + self.linesep)
+
+    def write(self, s):
+        "Write to fd, return None"
+        self.send(s)
+
+    def writelines(self, sequence):
+        "Call self.write() for each item in sequence"
+        for s in sequence:
+            self.write(s)
+
+    def read_nonblocking(self, size=1, timeout=-1):
+        """
+        Read from the file descriptor and return the result as a string.
+
+        The read_nonblocking method of :class:`SpawnBase` assumes that a call
+        to os.read will not block (timeout parameter is ignored). This is not
+        the case for POSIX file-like objects such as sockets and serial ports.
+
+        Use :func:`select.select`, timeout is implemented conditionally for
+        POSIX systems.
+
+        :param int size: Read at most *size* bytes.
+        :param int timeout: Wait timeout seconds for file descriptor to be
+            ready to read. When -1 (default), use self.timeout. When 0, poll.
+        :return: String containing the bytes read
+        """
+        if os.name == 'posix':
+            if timeout == -1:
+                timeout = self.timeout
+            rlist = [self.child_fd]
+            wlist = []
+            xlist = []
+            if self.use_poll:
+                rlist = poll_ignore_interrupts(rlist, timeout)
+            else:
+                rlist, wlist, xlist = select_ignore_interrupts(
+                    rlist, wlist, xlist, timeout
+                )
+            if self.child_fd not in rlist:
+                raise TIMEOUT('Timeout exceeded.')
+        return super(fdspawn, self).read_nonblocking(size)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/popen_spawn.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/popen_spawn.py
new file mode 100644
index 00000000000..4bb58cfe76c
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/popen_spawn.py
@@ -0,0 +1,188 @@
+"""Provides an interface like pexpect.spawn interface using subprocess.Popen
+"""
+import os
+import threading
+import subprocess
+import sys
+import time
+import signal
+import shlex
+
+try:
+    from queue import Queue, Empty  # Python 3
+except ImportError:
+    from Queue import Queue, Empty  # Python 2
+
+from .spawnbase import SpawnBase, PY3
+from .exceptions import EOF
+from .utils import string_types
+
+class PopenSpawn(SpawnBase):
+    def __init__(self, cmd, timeout=30, maxread=2000, searchwindowsize=None,
+                 logfile=None, cwd=None, env=None, encoding=None,
+                 codec_errors='strict', preexec_fn=None):
+        super(PopenSpawn, self).__init__(timeout=timeout, maxread=maxread,
+                searchwindowsize=searchwindowsize, logfile=logfile,
+                encoding=encoding, codec_errors=codec_errors)
+
+        # Note that `SpawnBase` initializes `self.crlf` to `\r\n`
+        # because the default behaviour for a PTY is to convert
+        # incoming LF to `\r\n` (see the `onlcr` flag and
+        # https://stackoverflow.com/a/35887657/5397009). Here we set
+        # it to `os.linesep` because that is what the spawned
+        # application outputs by default and `popen` doesn't translate
+        # anything.
+        if encoding is None:
+            self.crlf = os.linesep.encode ("ascii")
+        else:
+            self.crlf = self.string_type (os.linesep)
+
+        kwargs = dict(bufsize=0, stdin=subprocess.PIPE,
+                      stderr=subprocess.STDOUT, stdout=subprocess.PIPE,
+                      cwd=cwd, preexec_fn=preexec_fn, env=env)
+
+        if sys.platform == 'win32':
+            startupinfo = subprocess.STARTUPINFO()
+            startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
+            kwargs['startupinfo'] = startupinfo
+            kwargs['creationflags'] = subprocess.CREATE_NEW_PROCESS_GROUP
+
+        if isinstance(cmd, string_types) and sys.platform != 'win32':
+            cmd = shlex.split(cmd, posix=os.name == 'posix')
+
+        self.proc = subprocess.Popen(cmd, **kwargs)
+        self.pid = self.proc.pid
+        self.closed = False
+        self._buf = self.string_type()
+
+        self._read_queue = Queue()
+        self._read_thread = threading.Thread(target=self._read_incoming)
+        self._read_thread.setDaemon(True)
+        self._read_thread.start()
+
+    _read_reached_eof = False
+
+    def read_nonblocking(self, size, timeout):
+        buf = self._buf
+        if self._read_reached_eof:
+            # We have already finished reading. Use up any buffered data,
+            # then raise EOF
+            if buf:
+                self._buf = buf[size:]
+                return buf[:size]
+            else:
+                self.flag_eof = True
+                raise EOF('End Of File (EOF).')
+
+        if timeout == -1:
+            timeout = self.timeout
+        elif timeout is None:
+            timeout = 1e6
+
+        t0 = time.time()
+        while (time.time() - t0) < timeout and size and len(buf) < size:
+            try:
+                incoming = self._read_queue.get_nowait()
+            except Empty:
+                break
+            else:
+                if incoming is None:
+                    self._read_reached_eof = True
+                    break
+
+                buf += self._decoder.decode(incoming, final=False)
+
+        r, self._buf = buf[:size], buf[size:]
+
+        self._log(r, 'read')
+        return r
+
+    def _read_incoming(self):
+        """Run in a thread to move output from a pipe to a queue."""
+        fileno = self.proc.stdout.fileno()
+        while 1:
+            buf = b''
+            try:
+                buf = os.read(fileno, 1024)
+            except OSError as e:
+                self._log(e, 'read')
+
+            if not buf:
+                # This indicates we have reached EOF
+                self._read_queue.put(None)
+                return
+
+            self._read_queue.put(buf)
+
+    def write(self, s):
+        '''This is similar to send() except that there is no return value.
+        '''
+        self.send(s)
+
+    def writelines(self, sequence):
+        '''This calls write() for each element in the sequence.
+
+        The sequence can be any iterable object producing strings, typically a
+        list of strings. This does not add line separators. There is no return
+        value.
+        '''
+        for s in sequence:
+            self.send(s)
+
+    def send(self, s):
+        '''Send data to the subprocess' stdin.
+
+        Returns the number of bytes written.
+        '''
+        s = self._coerce_send_string(s)
+        self._log(s, 'send')
+
+        b = self._encoder.encode(s, final=False)
+        if PY3:
+            return self.proc.stdin.write(b)
+        else:
+            # On Python 2, .write() returns None, so we return the length of
+            # bytes written ourselves. This assumes they all got written.
+            self.proc.stdin.write(b)
+            return len(b)
+
+    def sendline(self, s=''):
+        '''Wraps send(), sending string ``s`` to child process, with os.linesep
+        automatically appended. Returns number of bytes written. '''
+
+        n = self.send(s)
+        return n + self.send(self.linesep)
+
+    def wait(self):
+        '''Wait for the subprocess to finish.
+
+        Returns the exit code.
+        '''
+        status = self.proc.wait()
+        if status >= 0:
+            self.exitstatus = status
+            self.signalstatus = None
+        else:
+            self.exitstatus = None
+            self.signalstatus = -status
+        self.terminated = True
+        return status
+
+    def kill(self, sig):
+        '''Sends a Unix signal to the subprocess.
+
+        Use constants from the :mod:`signal` module to specify which signal.
+        '''
+        if sys.platform == 'win32':
+            if sig in [signal.SIGINT, signal.CTRL_C_EVENT]:
+                sig = signal.CTRL_C_EVENT
+            elif sig in [signal.SIGBREAK, signal.CTRL_BREAK_EVENT]:
+                sig = signal.CTRL_BREAK_EVENT
+            else:
+                sig = signal.SIGTERM
+
+        os.kill(self.proc.pid, sig)
+
+    def sendeof(self):
+        '''Closes the stdin pipe from the writing end.'''
+        self.proc.stdin.close()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/pty_spawn.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/pty_spawn.py
new file mode 100644
index 00000000000..e0e2b54fd03
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/pty_spawn.py
@@ -0,0 +1,833 @@
+import os
+import sys
+import time
+import pty
+import tty
+import errno
+import signal
+from contextlib import contextmanager
+
+import ptyprocess
+from ptyprocess.ptyprocess import use_native_pty_fork
+
+from .exceptions import ExceptionPexpect, EOF, TIMEOUT
+from .spawnbase import SpawnBase
+from .utils import (
+    which, split_command_line, select_ignore_interrupts, poll_ignore_interrupts
+)
+
+@contextmanager
+def _wrap_ptyprocess_err():
+    """Turn ptyprocess errors into our own ExceptionPexpect errors"""
+    try:
+        yield
+    except ptyprocess.PtyProcessError as e:
+        raise ExceptionPexpect(*e.args)
+
+PY3 = (sys.version_info[0] >= 3)
+
+class spawn(SpawnBase):
+    '''This is the main class interface for Pexpect. Use this class to start
+    and control child applications. '''
+
+    # This is purely informational now - changing it has no effect
+    use_native_pty_fork = use_native_pty_fork
+
+    def __init__(self, command, args=[], timeout=30, maxread=2000,
+                 searchwindowsize=None, logfile=None, cwd=None, env=None,
+                 ignore_sighup=False, echo=True, preexec_fn=None,
+                 encoding=None, codec_errors='strict', dimensions=None,
+                 use_poll=False):
+        '''This is the constructor. The command parameter may be a string that
+        includes a command and any arguments to the command. For example::
+
+            child = pexpect.spawn('/usr/bin/ftp')
+            child = pexpect.spawn('/usr/bin/ssh user@example.com')
+            child = pexpect.spawn('ls -latr /tmp')
+
+        You may also construct it with a list of arguments like so::
+
+            child = pexpect.spawn('/usr/bin/ftp', [])
+            child = pexpect.spawn('/usr/bin/ssh', ['user@example.com'])
+            child = pexpect.spawn('ls', ['-latr', '/tmp'])
+
+        After this the child application will be created and will be ready to
+        talk to. For normal use, see expect() and send() and sendline().
+
+        Remember that Pexpect does NOT interpret shell meta characters such as
+        redirect, pipe, or wild cards (``>``, ``|``, or ``*``). This is a
+        common mistake.  If you want to run a command and pipe it through
+        another command then you must also start a shell. For example::
+
+            child = pexpect.spawn('/bin/bash -c "ls -l | grep LOG > logs.txt"')
+            child.expect(pexpect.EOF)
+
+        The second form of spawn (where you pass a list of arguments) is useful
+        in situations where you wish to spawn a command and pass it its own
+        argument list. This can make syntax more clear. For example, the
+        following is equivalent to the previous example::
+
+            shell_cmd = 'ls -l | grep LOG > logs.txt'
+            child = pexpect.spawn('/bin/bash', ['-c', shell_cmd])
+            child.expect(pexpect.EOF)
+
+        The maxread attribute sets the read buffer size. This is maximum number
+        of bytes that Pexpect will try to read from a TTY at one time. Setting
+        the maxread size to 1 will turn off buffering. Setting the maxread
+        value higher may help performance in cases where large amounts of
+        output are read back from the child. This feature is useful in
+        conjunction with searchwindowsize.
+
+        When the keyword argument *searchwindowsize* is None (default), the
+        full buffer is searched at each iteration of receiving incoming data.
+        The default number of bytes scanned at each iteration is very large
+        and may be reduced to collaterally reduce search cost.  After
+        :meth:`~.expect` returns, the full buffer attribute remains up to
+        size *maxread* irrespective of *searchwindowsize* value.
+
+        When the keyword argument ``timeout`` is specified as a number,
+        (default: *30*), then :class:`TIMEOUT` will be raised after the value
+        specified has elapsed, in seconds, for any of the :meth:`~.expect`
+        family of method calls.  When None, TIMEOUT will not be raised, and
+        :meth:`~.expect` may block indefinitely until match.
+
+
+        The logfile member turns on or off logging. All input and output will
+        be copied to the given file object. Set logfile to None to stop
+        logging. This is the default. Set logfile to sys.stdout to echo
+        everything to standard output. The logfile is flushed after each write.
+
+        Example log input and output to a file::
+
+            child = pexpect.spawn('some_command')
+            fout = open('mylog.txt','wb')
+            child.logfile = fout
+
+        Example log to stdout::
+
+            # In Python 2:
+            child = pexpect.spawn('some_command')
+            child.logfile = sys.stdout
+
+            # In Python 3, we'll use the ``encoding`` argument to decode data
+            # from the subprocess and handle it as unicode:
+            child = pexpect.spawn('some_command', encoding='utf-8')
+            child.logfile = sys.stdout
+
+        The logfile_read and logfile_send members can be used to separately log
+        the input from the child and output sent to the child. Sometimes you
+        don't want to see everything you write to the child. You only want to
+        log what the child sends back. For example::
+
+            child = pexpect.spawn('some_command')
+            child.logfile_read = sys.stdout
+
+        You will need to pass an encoding to spawn in the above code if you are
+        using Python 3.
+
+        To separately log output sent to the child use logfile_send::
+
+            child.logfile_send = fout
+
+        If ``ignore_sighup`` is True, the child process will ignore SIGHUP
+        signals. The default is False from Pexpect 4.0, meaning that SIGHUP
+        will be handled normally by the child.
+
+        The delaybeforesend helps overcome a weird behavior that many users
+        were experiencing. The typical problem was that a user would expect() a
+        "Password:" prompt and then immediately call sendline() to send the
+        password. The user would then see that their password was echoed back
+        to them. Passwords don't normally echo. The problem is caused by the
+        fact that most applications print out the "Password" prompt and then
+        turn off stdin echo, but if you send your password before the
+        application turned off echo, then you get your password echoed.
+        Normally this wouldn't be a problem when interacting with a human at a
+        real keyboard. If you introduce a slight delay just before writing then
+        this seems to clear up the problem. This was such a common problem for
+        many users that I decided that the default pexpect behavior should be
+        to sleep just before writing to the child application. 1/20th of a
+        second (50 ms) seems to be enough to clear up the problem. You can set
+        delaybeforesend to None to return to the old behavior.
+
+        Note that spawn is clever about finding commands on your path.
+        It uses the same logic that "which" uses to find executables.
+
+        If you wish to get the exit status of the child you must call the
+        close() method. The exit or signal status of the child will be stored
+        in self.exitstatus or self.signalstatus. If the child exited normally
+        then exitstatus will store the exit return code and signalstatus will
+        be None. If the child was terminated abnormally with a signal then
+        signalstatus will store the signal value and exitstatus will be None::
+
+            child = pexpect.spawn('some_command')
+            child.close()
+            print(child.exitstatus, child.signalstatus)
+
+        If you need more detail you can also read the self.status member which
+        stores the status returned by os.waitpid. You can interpret this using
+        os.WIFEXITED/os.WEXITSTATUS or os.WIFSIGNALED/os.TERMSIG.
+
+        The echo attribute may be set to False to disable echoing of input.
+        As a pseudo-terminal, all input echoed by the "keyboard" (send()
+        or sendline()) will be repeated to output.  For many cases, it is
+        not desirable to have echo enabled, and it may be later disabled
+        using setecho(False) followed by waitnoecho().  However, for some
+        platforms such as Solaris, this is not possible, and should be
+        disabled immediately on spawn.
+
+        If preexec_fn is given, it will be called in the child process before
+        launching the given command. This is useful to e.g. reset inherited
+        signal handlers.
+
+        The dimensions attribute specifies the size of the pseudo-terminal as
+        seen by the subprocess, and is specified as a two-entry tuple (rows,
+        columns). If this is unspecified, the defaults in ptyprocess will apply.
+
+        The use_poll attribute enables using select.poll() over select.select()
+        for socket handling. This is handy if your system could have > 1024 fds
+        '''
+        super(spawn, self).__init__(timeout=timeout, maxread=maxread, searchwindowsize=searchwindowsize,
+                                    logfile=logfile, encoding=encoding, codec_errors=codec_errors)
+        self.STDIN_FILENO = pty.STDIN_FILENO
+        self.STDOUT_FILENO = pty.STDOUT_FILENO
+        self.STDERR_FILENO = pty.STDERR_FILENO
+        self.cwd = cwd
+        self.env = env
+        self.echo = echo
+        self.ignore_sighup = ignore_sighup
+        self.__irix_hack = sys.platform.lower().startswith('irix')
+        if command is None:
+            self.command = None
+            self.args = None
+            self.name = '<pexpect factory incomplete>'
+        else:
+            self._spawn(command, args, preexec_fn, dimensions)
+        self.use_poll = use_poll
+
+    def __str__(self):
+        '''This returns a human-readable string that represents the state of
+        the object. '''
+
+        s = []
+        s.append(repr(self))
+        s.append('command: ' + str(self.command))
+        s.append('args: %r' % (self.args,))
+        s.append('buffer (last 100 chars): %r' % self.buffer[-100:])
+        s.append('before (last 100 chars): %r' % self.before[-100:] if self.before else '')
+        s.append('after: %r' % (self.after,))
+        s.append('match: %r' % (self.match,))
+        s.append('match_index: ' + str(self.match_index))
+        s.append('exitstatus: ' + str(self.exitstatus))
+        if hasattr(self, 'ptyproc'):
+            s.append('flag_eof: ' + str(self.flag_eof))
+        s.append('pid: ' + str(self.pid))
+        s.append('child_fd: ' + str(self.child_fd))
+        s.append('closed: ' + str(self.closed))
+        s.append('timeout: ' + str(self.timeout))
+        s.append('delimiter: ' + str(self.delimiter))
+        s.append('logfile: ' + str(self.logfile))
+        s.append('logfile_read: ' + str(self.logfile_read))
+        s.append('logfile_send: ' + str(self.logfile_send))
+        s.append('maxread: ' + str(self.maxread))
+        s.append('ignorecase: ' + str(self.ignorecase))
+        s.append('searchwindowsize: ' + str(self.searchwindowsize))
+        s.append('delaybeforesend: ' + str(self.delaybeforesend))
+        s.append('delayafterclose: ' + str(self.delayafterclose))
+        s.append('delayafterterminate: ' + str(self.delayafterterminate))
+        return '\n'.join(s)
+
+    def _spawn(self, command, args=[], preexec_fn=None, dimensions=None):
+        '''This starts the given command in a child process. This does all the
+        fork/exec type of stuff for a pty. This is called by __init__. If args
+        is empty then command will be parsed (split on spaces) and args will be
+        set to parsed arguments. '''
+
+        # The pid and child_fd of this object get set by this method.
+        # Note that it is difficult for this method to fail.
+        # You cannot detect if the child process cannot start.
+        # So the only way you can tell if the child process started
+        # or not is to try to read from the file descriptor. If you get
+        # EOF immediately then it means that the child is already dead.
+        # That may not necessarily be bad because you may have spawned a child
+        # that performs some task; creates no stdout output; and then dies.
+
+        # If command is an int type then it may represent a file descriptor.
+        if isinstance(command, type(0)):
+            raise ExceptionPexpect('Command is an int type. ' +
+                    'If this is a file descriptor then maybe you want to ' +
+                    'use fdpexpect.fdspawn which takes an existing ' +
+                    'file descriptor instead of a command string.')
+
+        if not isinstance(args, type([])):
+            raise TypeError('The argument, args, must be a list.')
+
+        if args == []:
+            self.args = split_command_line(command)
+            self.command = self.args[0]
+        else:
+            # Make a shallow copy of the args list.
+            self.args = args[:]
+            self.args.insert(0, command)
+            self.command = command
+
+        command_with_path = which(self.command, env=self.env)
+        if command_with_path is None:
+            raise ExceptionPexpect('The command was not found or was not ' +
+                    'executable: %s.' % self.command)
+        self.command = command_with_path
+        self.args[0] = self.command
+
+        self.name = '<' + ' '.join(self.args) + '>'
+
+        assert self.pid is None, 'The pid member must be None.'
+        assert self.command is not None, 'The command member must not be None.'
+
+        kwargs = {'echo': self.echo, 'preexec_fn': preexec_fn}
+        if self.ignore_sighup:
+            def preexec_wrapper():
+                "Set SIGHUP to be ignored, then call the real preexec_fn"
+                signal.signal(signal.SIGHUP, signal.SIG_IGN)
+                if preexec_fn is not None:
+                    preexec_fn()
+            kwargs['preexec_fn'] = preexec_wrapper
+
+        if dimensions is not None:
+            kwargs['dimensions'] = dimensions
+
+        if self.encoding is not None:
+            # Encode command line using the specified encoding
+            self.args = [a if isinstance(a, bytes) else a.encode(self.encoding)
+                         for a in self.args]
+
+        self.ptyproc = self._spawnpty(self.args, env=self.env,
+                                     cwd=self.cwd, **kwargs)
+
+        self.pid = self.ptyproc.pid
+        self.child_fd = self.ptyproc.fd
+
+
+        self.terminated = False
+        self.closed = False
+
+    def _spawnpty(self, args, **kwargs):
+        '''Spawn a pty and return an instance of PtyProcess.'''
+        return ptyprocess.PtyProcess.spawn(args, **kwargs)
+
+    def close(self, force=True):
+        '''This closes the connection with the child application. Note that
+        calling close() more than once is valid. This emulates standard Python
+        behavior with files. Set force to True if you want to make sure that
+        the child is terminated (SIGKILL is sent if the child ignores SIGHUP
+        and SIGINT). '''
+
+        self.flush()
+        with _wrap_ptyprocess_err():
+            # PtyProcessError may be raised if it is not possible to terminate
+            # the child.
+            self.ptyproc.close(force=force)
+        self.isalive()  # Update exit status from ptyproc
+        self.child_fd = -1
+        self.closed = True
+
+    def isatty(self):
+        '''This returns True if the file descriptor is open and connected to a
+        tty(-like) device, else False.
+
+        On SVR4-style platforms implementing streams, such as SunOS and HP-UX,
+        the child pty may not appear as a terminal device.  This means
+        methods such as setecho(), setwinsize(), getwinsize() may raise an
+        IOError. '''
+
+        return os.isatty(self.child_fd)
+
+    def waitnoecho(self, timeout=-1):
+        '''This waits until the terminal ECHO flag is set False. This returns
+        True if the echo mode is off. This returns False if the ECHO flag was
+        not set False before the timeout. This can be used to detect when the
+        child is waiting for a password. Usually a child application will turn
+        off echo mode when it is waiting for the user to enter a password. For
+        example, instead of expecting the "password:" prompt you can wait for
+        the child to set ECHO off::
+
+            p = pexpect.spawn('ssh user@example.com')
+            p.waitnoecho()
+            p.sendline(mypassword)
+
+        If timeout==-1 then this method will use the value in self.timeout.
+        If timeout==None then this method to block until ECHO flag is False.
+        '''
+
+        if timeout == -1:
+            timeout = self.timeout
+        if timeout is not None:
+            end_time = time.time() + timeout
+        while True:
+            if not self.getecho():
+                return True
+            if timeout < 0 and timeout is not None:
+                return False
+            if timeout is not None:
+                timeout = end_time - time.time()
+            time.sleep(0.1)
+
+    def getecho(self):
+        '''This returns the terminal echo mode. This returns True if echo is
+        on or False if echo is off. Child applications that are expecting you
+        to enter a password often set ECHO False. See waitnoecho().
+
+        Not supported on platforms where ``isatty()`` returns False.  '''
+        return self.ptyproc.getecho()
+
+    def setecho(self, state):
+        '''This sets the terminal echo mode on or off. Note that anything the
+        child sent before the echo will be lost, so you should be sure that
+        your input buffer is empty before you call setecho(). For example, the
+        following will work as expected::
+
+            p = pexpect.spawn('cat') # Echo is on by default.
+            p.sendline('1234') # We expect see this twice from the child...
+            p.expect(['1234']) # ... once from the tty echo...
+            p.expect(['1234']) # ... and again from cat itself.
+            p.setecho(False) # Turn off tty echo
+            p.sendline('abcd') # We will set this only once (echoed by cat).
+            p.sendline('wxyz') # We will set this only once (echoed by cat)
+            p.expect(['abcd'])
+            p.expect(['wxyz'])
+
+        The following WILL NOT WORK because the lines sent before the setecho
+        will be lost::
+
+            p = pexpect.spawn('cat')
+            p.sendline('1234')
+            p.setecho(False) # Turn off tty echo
+            p.sendline('abcd') # We will set this only once (echoed by cat).
+            p.sendline('wxyz') # We will set this only once (echoed by cat)
+            p.expect(['1234'])
+            p.expect(['1234'])
+            p.expect(['abcd'])
+            p.expect(['wxyz'])
+
+
+        Not supported on platforms where ``isatty()`` returns False.
+        '''
+        return self.ptyproc.setecho(state)
+
+    def read_nonblocking(self, size=1, timeout=-1):
+        '''This reads at most size characters from the child application. It
+        includes a timeout. If the read does not complete within the timeout
+        period then a TIMEOUT exception is raised. If the end of file is read
+        then an EOF exception will be raised.  If a logfile is specified, a
+        copy is written to that log.
+
+        If timeout is None then the read may block indefinitely.
+        If timeout is -1 then the self.timeout value is used. If timeout is 0
+        then the child is polled and if there is no data immediately ready
+        then this will raise a TIMEOUT exception.
+
+        The timeout refers only to the amount of time to read at least one
+        character. This is not affected by the 'size' parameter, so if you call
+        read_nonblocking(size=100, timeout=30) and only one character is
+        available right away then one character will be returned immediately.
+        It will not wait for 30 seconds for another 99 characters to come in.
+
+        This is a wrapper around os.read(). It uses select.select() to
+        implement the timeout. '''
+
+        if self.closed:
+            raise ValueError('I/O operation on closed file.')
+
+        if timeout == -1:
+            timeout = self.timeout
+
+        # Note that some systems such as Solaris do not give an EOF when
+        # the child dies. In fact, you can still try to read
+        # from the child_fd -- it will block forever or until TIMEOUT.
+        # For this case, I test isalive() before doing any reading.
+        # If isalive() is false, then I pretend that this is the same as EOF.
+        if not self.isalive():
+            # timeout of 0 means "poll"
+            if self.use_poll:
+                r = poll_ignore_interrupts([self.child_fd], timeout)
+            else:
+                r, w, e = select_ignore_interrupts([self.child_fd], [], [], 0)
+            if not r:
+                self.flag_eof = True
+                raise EOF('End Of File (EOF). Braindead platform.')
+        elif self.__irix_hack:
+            # Irix takes a long time before it realizes a child was terminated.
+            # FIXME So does this mean Irix systems are forced to always have
+            # FIXME a 2 second delay when calling read_nonblocking? That sucks.
+            if self.use_poll:
+                r = poll_ignore_interrupts([self.child_fd], timeout)
+            else:
+                r, w, e = select_ignore_interrupts([self.child_fd], [], [], 2)
+            if not r and not self.isalive():
+                self.flag_eof = True
+                raise EOF('End Of File (EOF). Slow platform.')
+        if self.use_poll:
+            r = poll_ignore_interrupts([self.child_fd], timeout)
+        else:
+            r, w, e = select_ignore_interrupts(
+                [self.child_fd], [], [], timeout
+            )
+
+        if not r:
+            if not self.isalive():
+                # Some platforms, such as Irix, will claim that their
+                # processes are alive; timeout on the select; and
+                # then finally admit that they are not alive.
+                self.flag_eof = True
+                raise EOF('End of File (EOF). Very slow platform.')
+            else:
+                raise TIMEOUT('Timeout exceeded.')
+
+        if self.child_fd in r:
+            return super(spawn, self).read_nonblocking(size)
+
+        raise ExceptionPexpect('Reached an unexpected state.')  # pragma: no cover
+
+    def write(self, s):
+        '''This is similar to send() except that there is no return value.
+        '''
+
+        self.send(s)
+
+    def writelines(self, sequence):
+        '''This calls write() for each element in the sequence. The sequence
+        can be any iterable object producing strings, typically a list of
+        strings. This does not add line separators. There is no return value.
+        '''
+
+        for s in sequence:
+            self.write(s)
+
+    def send(self, s):
+        '''Sends string ``s`` to the child process, returning the number of
+        bytes written. If a logfile is specified, a copy is written to that
+        log.
+
+        The default terminal input mode is canonical processing unless set
+        otherwise by the child process. This allows backspace and other line
+        processing to be performed prior to transmitting to the receiving
+        program. As this is buffered, there is a limited size of such buffer.
+
+        On Linux systems, this is 4096 (defined by N_TTY_BUF_SIZE). All
+        other systems honor the POSIX.1 definition PC_MAX_CANON -- 1024
+        on OSX, 256 on OpenSolaris, and 1920 on FreeBSD.
+
+        This value may be discovered using fpathconf(3)::
+
+            >>> from os import fpathconf
+            >>> print(fpathconf(0, 'PC_MAX_CANON'))
+            256
+
+        On such a system, only 256 bytes may be received per line. Any
+        subsequent bytes received will be discarded. BEL (``'\a'``) is then
+        sent to output if IMAXBEL (termios.h) is set by the tty driver.
+        This is usually enabled by default.  Linux does not honor this as
+        an option -- it behaves as though it is always set on.
+
+        Canonical input processing may be disabled altogether by executing
+        a shell, then stty(1), before executing the final program::
+
+            >>> bash = pexpect.spawn('/bin/bash', echo=False)
+            >>> bash.sendline('stty -icanon')
+            >>> bash.sendline('base64')
+            >>> bash.sendline('x' * 5000)
+        '''
+
+        if self.delaybeforesend is not None:
+            time.sleep(self.delaybeforesend)
+
+        s = self._coerce_send_string(s)
+        self._log(s, 'send')
+
+        b = self._encoder.encode(s, final=False)
+        return os.write(self.child_fd, b)
+
+    def sendline(self, s=''):
+        '''Wraps send(), sending string ``s`` to child process, with
+        ``os.linesep`` automatically appended. Returns number of bytes
+        written.  Only a limited number of bytes may be sent for each
+        line in the default terminal mode, see docstring of :meth:`send`.
+        '''
+        s = self._coerce_send_string(s)
+        return self.send(s + self.linesep)
+
+    def _log_control(self, s):
+        """Write control characters to the appropriate log files"""
+        if self.encoding is not None:
+            s = s.decode(self.encoding, 'replace')
+        self._log(s, 'send')
+
+    def sendcontrol(self, char):
+        '''Helper method that wraps send() with mnemonic access for sending control
+        character to the child (such as Ctrl-C or Ctrl-D).  For example, to send
+        Ctrl-G (ASCII 7, bell, '\a')::
+
+            child.sendcontrol('g')
+
+        See also, sendintr() and sendeof().
+        '''
+        n, byte = self.ptyproc.sendcontrol(char)
+        self._log_control(byte)
+        return n
+
+    def sendeof(self):
+        '''This sends an EOF to the child. This sends a character which causes
+        the pending parent output buffer to be sent to the waiting child
+        program without waiting for end-of-line. If it is the first character
+        of the line, the read() in the user program returns 0, which signifies
+        end-of-file. This means to work as expected a sendeof() has to be
+        called at the beginning of a line. This method does not send a newline.
+        It is the responsibility of the caller to ensure the eof is sent at the
+        beginning of a line. '''
+
+        n, byte = self.ptyproc.sendeof()
+        self._log_control(byte)
+
+    def sendintr(self):
+        '''This sends a SIGINT to the child. It does not require
+        the SIGINT to be the first character on a line. '''
+
+        n, byte = self.ptyproc.sendintr()
+        self._log_control(byte)
+
+    @property
+    def flag_eof(self):
+        return self.ptyproc.flag_eof
+
+    @flag_eof.setter
+    def flag_eof(self, value):
+        self.ptyproc.flag_eof = value
+
+    def eof(self):
+        '''This returns True if the EOF exception was ever raised.
+        '''
+        return self.flag_eof
+
+    def terminate(self, force=False):
+        '''This forces a child process to terminate. It starts nicely with
+        SIGHUP and SIGINT. If "force" is True then moves onto SIGKILL. This
+        returns True if the child was terminated. This returns False if the
+        child could not be terminated. '''
+
+        if not self.isalive():
+            return True
+        try:
+            self.kill(signal.SIGHUP)
+            time.sleep(self.delayafterterminate)
+            if not self.isalive():
+                return True
+            self.kill(signal.SIGCONT)
+            time.sleep(self.delayafterterminate)
+            if not self.isalive():
+                return True
+            self.kill(signal.SIGINT)
+            time.sleep(self.delayafterterminate)
+            if not self.isalive():
+                return True
+            if force:
+                self.kill(signal.SIGKILL)
+                time.sleep(self.delayafterterminate)
+                if not self.isalive():
+                    return True
+                else:
+                    return False
+            return False
+        except OSError:
+            # I think there are kernel timing issues that sometimes cause
+            # this to happen. I think isalive() reports True, but the
+            # process is dead to the kernel.
+            # Make one last attempt to see if the kernel is up to date.
+            time.sleep(self.delayafterterminate)
+            if not self.isalive():
+                return True
+            else:
+                return False
+
+    def wait(self):
+        '''This waits until the child exits. This is a blocking call. This will
+        not read any data from the child, so this will block forever if the
+        child has unread output and has terminated. In other words, the child
+        may have printed output then called exit(), but, the child is
+        technically still alive until its output is read by the parent.
+
+        This method is non-blocking if :meth:`wait` has already been called
+        previously or :meth:`isalive` method returns False.  It simply returns
+        the previously determined exit status.
+        '''
+
+        ptyproc = self.ptyproc
+        with _wrap_ptyprocess_err():
+            # exception may occur if "Is some other process attempting
+            # "job control with our child pid?"
+            exitstatus = ptyproc.wait()
+        self.status = ptyproc.status
+        self.exitstatus = ptyproc.exitstatus
+        self.signalstatus = ptyproc.signalstatus
+        self.terminated = True
+
+        return exitstatus
+
+    def isalive(self):
+        '''This tests if the child process is running or not. This is
+        non-blocking. If the child was terminated then this will read the
+        exitstatus or signalstatus of the child. This returns True if the child
+        process appears to be running or False if not. It can take literally
+        SECONDS for Solaris to return the right status. '''
+
+        ptyproc = self.ptyproc
+        with _wrap_ptyprocess_err():
+            alive = ptyproc.isalive()
+
+        if not alive:
+            self.status = ptyproc.status
+            self.exitstatus = ptyproc.exitstatus
+            self.signalstatus = ptyproc.signalstatus
+            self.terminated = True
+
+        return alive
+
+    def kill(self, sig):
+
+        '''This sends the given signal to the child application. In keeping
+        with UNIX tradition it has a misleading name. It does not necessarily
+        kill the child unless you send the right signal. '''
+
+        # Same as os.kill, but the pid is given for you.
+        if self.isalive():
+            os.kill(self.pid, sig)
+
+    def getwinsize(self):
+        '''This returns the terminal window size of the child tty. The return
+        value is a tuple of (rows, cols). '''
+        return self.ptyproc.getwinsize()
+
+    def setwinsize(self, rows, cols):
+        '''This sets the terminal window size of the child tty. This will cause
+        a SIGWINCH signal to be sent to the child. This does not change the
+        physical window size. It changes the size reported to TTY-aware
+        applications like vi or curses -- applications that respond to the
+        SIGWINCH signal. '''
+        return self.ptyproc.setwinsize(rows, cols)
+
+
+    def interact(self, escape_character=chr(29),
+            input_filter=None, output_filter=None):
+
+        '''This gives control of the child process to the interactive user (the
+        human at the keyboard). Keystrokes are sent to the child process, and
+        the stdout and stderr output of the child process is printed. This
+        simply echos the child stdout and child stderr to the real stdout and
+        it echos the real stdin to the child stdin. When the user types the
+        escape_character this method will return None. The escape_character
+        will not be transmitted.  The default for escape_character is
+        entered as ``Ctrl - ]``, the very same as BSD telnet. To prevent
+        escaping, escape_character may be set to None.
+
+        If a logfile is specified, then the data sent and received from the
+        child process in interact mode is duplicated to the given log.
+
+        You may pass in optional input and output filter functions. These
+        functions should take a string and return a string. The output_filter
+        will be passed all the output from the child process. The input_filter
+        will be passed all the keyboard input from the user. The input_filter
+        is run BEFORE the check for the escape_character.
+
+        Note that if you change the window size of the parent the SIGWINCH
+        signal will not be passed through to the child. If you want the child
+        window size to change when the parent's window size changes then do
+        something like the following example::
+
+            import pexpect, struct, fcntl, termios, signal, sys
+            def sigwinch_passthrough (sig, data):
+                s = struct.pack("HHHH", 0, 0, 0, 0)
+                a = struct.unpack('hhhh', fcntl.ioctl(sys.stdout.fileno(),
+                    termios.TIOCGWINSZ , s))
+                if not p.closed:
+                    p.setwinsize(a[0],a[1])
+
+            # Note this 'p' is global and used in sigwinch_passthrough.
+            p = pexpect.spawn('/bin/bash')
+            signal.signal(signal.SIGWINCH, sigwinch_passthrough)
+            p.interact()
+        '''
+
+        # Flush the buffer.
+        self.write_to_stdout(self.buffer)
+        self.stdout.flush()
+        self._buffer = self.buffer_type()
+        mode = tty.tcgetattr(self.STDIN_FILENO)
+        tty.setraw(self.STDIN_FILENO)
+        if escape_character is not None and PY3:
+            escape_character = escape_character.encode('latin-1')
+        try:
+            self.__interact_copy(escape_character, input_filter, output_filter)
+        finally:
+            tty.tcsetattr(self.STDIN_FILENO, tty.TCSAFLUSH, mode)
+
+    def __interact_writen(self, fd, data):
+        '''This is used by the interact() method.
+        '''
+
+        while data != b'' and self.isalive():
+            n = os.write(fd, data)
+            data = data[n:]
+
+    def __interact_read(self, fd):
+        '''This is used by the interact() method.
+        '''
+
+        return os.read(fd, 1000)
+
+    def __interact_copy(
+        self, escape_character=None, input_filter=None, output_filter=None
+    ):
+
+        '''This is used by the interact() method.
+        '''
+
+        while self.isalive():
+            if self.use_poll:
+                r = poll_ignore_interrupts([self.child_fd, self.STDIN_FILENO])
+            else:
+                r, w, e = select_ignore_interrupts(
+                    [self.child_fd, self.STDIN_FILENO], [], []
+                )
+            if self.child_fd in r:
+                try:
+                    data = self.__interact_read(self.child_fd)
+                except OSError as err:
+                    if err.args[0] == errno.EIO:
+                        # Linux-style EOF
+                        break
+                    raise
+                if data == b'':
+                    # BSD-style EOF
+                    break
+                if output_filter:
+                    data = output_filter(data)
+                self._log(data, 'read')
+                os.write(self.STDOUT_FILENO, data)
+            if self.STDIN_FILENO in r:
+                data = self.__interact_read(self.STDIN_FILENO)
+                if input_filter:
+                    data = input_filter(data)
+                i = -1
+                if escape_character is not None:
+                    i = data.rfind(escape_character)
+                if i != -1:
+                    data = data[:i]
+                    if data:
+                        self._log(data, 'send')
+                    self.__interact_writen(self.child_fd, data)
+                    break
+                self._log(data, 'send')
+                self.__interact_writen(self.child_fd, data)
+
+
+def spawnu(*args, **kwargs):
+    """Deprecated: pass encoding to spawn() instead."""
+    kwargs.setdefault('encoding', 'utf-8')
+    return spawn(*args, **kwargs)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/pxssh.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/pxssh.py
new file mode 100644
index 00000000000..ef2e91186b3
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/pxssh.py
@@ -0,0 +1,499 @@
+'''This class extends pexpect.spawn to specialize setting up SSH connections.
+This adds methods for login, logout, and expecting the shell prompt.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from pexpect import ExceptionPexpect, TIMEOUT, EOF, spawn
+import time
+import os
+import sys
+import re
+
+__all__ = ['ExceptionPxssh', 'pxssh']
+
+# Exception classes used by this module.
+class ExceptionPxssh(ExceptionPexpect):
+    '''Raised for pxssh exceptions.
+    '''
+
+if sys.version_info > (3, 0):
+    from shlex import quote
+else:
+    _find_unsafe = re.compile(r'[^\w@%+=:,./-]').search
+
+    def quote(s):
+        """Return a shell-escaped version of the string *s*."""
+        if not s:
+            return "''"
+        if _find_unsafe(s) is None:
+            return s
+
+        # use single quotes, and put single quotes into double quotes
+        # the string $'b is then quoted as '$'"'"'b'
+        return "'" + s.replace("'", "'\"'\"'") + "'"
+
+class pxssh (spawn):
+    '''This class extends pexpect.spawn to specialize setting up SSH
+    connections. This adds methods for login, logout, and expecting the shell
+    prompt. It does various tricky things to handle many situations in the SSH
+    login process. For example, if the session is your first login, then pxssh
+    automatically accepts the remote certificate; or if you have public key
+    authentication setup then pxssh won't wait for the password prompt.
+
+    pxssh uses the shell prompt to synchronize output from the remote host. In
+    order to make this more robust it sets the shell prompt to something more
+    unique than just $ or #. This should work on most Borne/Bash or Csh style
+    shells.
+
+    Example that runs a few commands on a remote server and prints the result::
+
+        from pexpect import pxssh
+        import getpass
+        try:
+            s = pxssh.pxssh()
+            hostname = raw_input('hostname: ')
+            username = raw_input('username: ')
+            password = getpass.getpass('password: ')
+            s.login(hostname, username, password)
+            s.sendline('uptime')   # run a command
+            s.prompt()             # match the prompt
+            print(s.before)        # print everything before the prompt.
+            s.sendline('ls -l')
+            s.prompt()
+            print(s.before)
+            s.sendline('df')
+            s.prompt()
+            print(s.before)
+            s.logout()
+        except pxssh.ExceptionPxssh as e:
+            print("pxssh failed on login.")
+            print(e)
+
+    Example showing how to specify SSH options::
+
+        from pexpect import pxssh
+        s = pxssh.pxssh(options={
+                            "StrictHostKeyChecking": "no",
+                            "UserKnownHostsFile": "/dev/null"})
+        ...
+
+    Note that if you have ssh-agent running while doing development with pxssh
+    then this can lead to a lot of confusion. Many X display managers (xdm,
+    gdm, kdm, etc.) will automatically start a GUI agent. You may see a GUI
+    dialog box popup asking for a password during development. You should turn
+    off any key agents during testing. The 'force_password' attribute will turn
+    off public key authentication. This will only work if the remote SSH server
+    is configured to allow password logins. Example of using 'force_password'
+    attribute::
+
+            s = pxssh.pxssh()
+            s.force_password = True
+            hostname = raw_input('hostname: ')
+            username = raw_input('username: ')
+            password = getpass.getpass('password: ')
+            s.login (hostname, username, password)
+    
+    `debug_command_string` is only for the test suite to confirm that the string
+    generated for SSH is correct, using this will not allow you to do
+    anything other than get a string back from `pxssh.pxssh.login()`.
+    '''
+
+    def __init__ (self, timeout=30, maxread=2000, searchwindowsize=None,
+                    logfile=None, cwd=None, env=None, ignore_sighup=True, echo=True,
+                    options={}, encoding=None, codec_errors='strict',
+                    debug_command_string=False):
+
+        spawn.__init__(self, None, timeout=timeout, maxread=maxread,
+                       searchwindowsize=searchwindowsize, logfile=logfile,
+                       cwd=cwd, env=env, ignore_sighup=ignore_sighup, echo=echo,
+                       encoding=encoding, codec_errors=codec_errors)
+
+        self.name = '<pxssh>'
+
+        #SUBTLE HACK ALERT! Note that the command that SETS the prompt uses a
+        #slightly different string than the regular expression to match it. This
+        #is because when you set the prompt the command will echo back, but we
+        #don't want to match the echoed command. So if we make the set command
+        #slightly different than the regex we eliminate the problem. To make the
+        #set command different we add a backslash in front of $. The $ doesn't
+        #need to be escaped, but it doesn't hurt and serves to make the set
+        #prompt command different than the regex.
+
+        # used to match the command-line prompt
+        self.UNIQUE_PROMPT = r"\[PEXPECT\][\$\#] "
+        self.PROMPT = self.UNIQUE_PROMPT
+
+        # used to set shell command-line prompt to UNIQUE_PROMPT.
+        self.PROMPT_SET_SH = r"PS1='[PEXPECT]\$ '"
+        self.PROMPT_SET_CSH = r"set prompt='[PEXPECT]\$ '"
+        self.SSH_OPTS = ("-o'RSAAuthentication=no'"
+                + " -o 'PubkeyAuthentication=no'")
+# Disabling host key checking, makes you vulnerable to MITM attacks.
+#                + " -o 'StrictHostKeyChecking=no'"
+#                + " -o 'UserKnownHostsFile /dev/null' ")
+        # Disabling X11 forwarding gets rid of the annoying SSH_ASKPASS from
+        # displaying a GUI password dialog. I have not figured out how to
+        # disable only SSH_ASKPASS without also disabling X11 forwarding.
+        # Unsetting SSH_ASKPASS on the remote side doesn't disable it! Annoying!
+        #self.SSH_OPTS = "-x -o'RSAAuthentication=no' -o 'PubkeyAuthentication=no'"
+        self.force_password = False
+        
+        self.debug_command_string = debug_command_string
+
+        # User defined SSH options, eg,
+        # ssh.otions = dict(StrictHostKeyChecking="no",UserKnownHostsFile="/dev/null")
+        self.options = options
+
+    def levenshtein_distance(self, a, b):
+        '''This calculates the Levenshtein distance between a and b.
+        '''
+
+        n, m = len(a), len(b)
+        if n > m:
+            a,b = b,a
+            n,m = m,n
+        current = range(n+1)
+        for i in range(1,m+1):
+            previous, current = current, [i]+[0]*n
+            for j in range(1,n+1):
+                add, delete = previous[j]+1, current[j-1]+1
+                change = previous[j-1]
+                if a[j-1] != b[i-1]:
+                    change = change + 1
+                current[j] = min(add, delete, change)
+        return current[n]
+
+    def try_read_prompt(self, timeout_multiplier):
+        '''This facilitates using communication timeouts to perform
+        synchronization as quickly as possible, while supporting high latency
+        connections with a tunable worst case performance. Fast connections
+        should be read almost immediately. Worst case performance for this
+        method is timeout_multiplier * 3 seconds.
+        '''
+
+        # maximum time allowed to read the first response
+        first_char_timeout = timeout_multiplier * 0.5
+
+        # maximum time allowed between subsequent characters
+        inter_char_timeout = timeout_multiplier * 0.1
+
+        # maximum time for reading the entire prompt
+        total_timeout = timeout_multiplier * 3.0
+
+        prompt = self.string_type()
+        begin = time.time()
+        expired = 0.0
+        timeout = first_char_timeout
+
+        while expired < total_timeout:
+            try:
+                prompt += self.read_nonblocking(size=1, timeout=timeout)
+                expired = time.time() - begin # updated total time expired
+                timeout = inter_char_timeout
+            except TIMEOUT:
+                break
+
+        return prompt
+
+    def sync_original_prompt (self, sync_multiplier=1.0):
+        '''This attempts to find the prompt. Basically, press enter and record
+        the response; press enter again and record the response; if the two
+        responses are similar then assume we are at the original prompt.
+        This can be a slow function. Worst case with the default sync_multiplier
+        can take 12 seconds. Low latency connections are more likely to fail
+        with a low sync_multiplier. Best case sync time gets worse with a
+        high sync multiplier (500 ms with default). '''
+        
+        # All of these timing pace values are magic.
+        # I came up with these based on what seemed reliable for
+        # connecting to a heavily loaded machine I have.
+        self.sendline()
+        time.sleep(0.1)
+
+        try:
+            # Clear the buffer before getting the prompt.
+            self.try_read_prompt(sync_multiplier)
+        except TIMEOUT:
+            pass
+
+        self.sendline()
+        x = self.try_read_prompt(sync_multiplier)
+
+        self.sendline()
+        a = self.try_read_prompt(sync_multiplier)
+
+        self.sendline()
+        b = self.try_read_prompt(sync_multiplier)
+
+        ld = self.levenshtein_distance(a,b)
+        len_a = len(a)
+        if len_a == 0:
+            return False
+        if float(ld)/len_a < 0.4:
+            return True
+        return False
+
+    ### TODO: This is getting messy and I'm pretty sure this isn't perfect.
+    ### TODO: I need to draw a flow chart for this.
+    ### TODO: Unit tests for SSH tunnels, remote SSH command exec, disabling original prompt sync
+    def login (self, server, username, password='', terminal_type='ansi',
+                original_prompt=r"[#$]", login_timeout=10, port=None,
+                auto_prompt_reset=True, ssh_key=None, quiet=True,
+                sync_multiplier=1, check_local_ip=True,
+                password_regex=r'(?i)(?:password:)|(?:passphrase for key)',
+                ssh_tunnels={}, spawn_local_ssh=True,
+                sync_original_prompt=True, ssh_config=None):
+        '''This logs the user into the given server.
+
+        It uses
+        'original_prompt' to try to find the prompt right after login. When it
+        finds the prompt it immediately tries to reset the prompt to something
+        more easily matched. The default 'original_prompt' is very optimistic
+        and is easily fooled. It's more reliable to try to match the original
+        prompt as exactly as possible to prevent false matches by server
+        strings such as the "Message Of The Day". On many systems you can
+        disable the MOTD on the remote server by creating a zero-length file
+        called :file:`~/.hushlogin` on the remote server. If a prompt cannot be found
+        then this will not necessarily cause the login to fail. In the case of
+        a timeout when looking for the prompt we assume that the original
+        prompt was so weird that we could not match it, so we use a few tricks
+        to guess when we have reached the prompt. Then we hope for the best and
+        blindly try to reset the prompt to something more unique. If that fails
+        then login() raises an :class:`ExceptionPxssh` exception.
+
+        In some situations it is not possible or desirable to reset the
+        original prompt. In this case, pass ``auto_prompt_reset=False`` to
+        inhibit setting the prompt to the UNIQUE_PROMPT. Remember that pxssh
+        uses a unique prompt in the :meth:`prompt` method. If the original prompt is
+        not reset then this will disable the :meth:`prompt` method unless you
+        manually set the :attr:`PROMPT` attribute.
+        
+        Set ``password_regex`` if there is a MOTD message with `password` in it.
+        Changing this is like playing in traffic, don't (p)expect it to match straight
+        away.
+        
+        If you require to connect to another SSH server from the your original SSH
+        connection set ``spawn_local_ssh`` to `False` and this will use your current
+        session to do so. Setting this option to `False` and not having an active session
+        will trigger an error.
+        
+        Set ``ssh_key`` to a file path to an SSH private key to use that SSH key
+        for the session authentication.
+        Set ``ssh_key`` to `True` to force passing the current SSH authentication socket
+        to the desired ``hostname``.
+        
+        Set ``ssh_config`` to a file path string of an SSH client config file to pass that
+        file to the client to handle itself. You may set any options you wish in here, however
+        doing so will require you to post extra information that you may not want to if you
+        run into issues.
+        '''
+        
+        session_regex_array = ["(?i)are you sure you want to continue connecting", original_prompt, password_regex, "(?i)permission denied", "(?i)terminal type", TIMEOUT]
+        session_init_regex_array = []
+        session_init_regex_array.extend(session_regex_array)
+        session_init_regex_array.extend(["(?i)connection closed by remote host", EOF])
+
+        ssh_options = ''.join([" -o '%s=%s'" % (o, v) for (o, v) in self.options.items()])
+        if quiet:
+            ssh_options = ssh_options + ' -q'
+        if not check_local_ip:
+            ssh_options = ssh_options + " -o'NoHostAuthenticationForLocalhost=yes'"
+        if self.force_password:
+            ssh_options = ssh_options + ' ' + self.SSH_OPTS
+        if ssh_config is not None:
+            if spawn_local_ssh and not os.path.isfile(ssh_config):
+                raise ExceptionPxssh('SSH config does not exist or is not a file.')
+            ssh_options = ssh_options + '-F ' + ssh_config
+        if port is not None:
+            ssh_options = ssh_options + ' -p %s'%(str(port))
+        if ssh_key is not None:
+            # Allow forwarding our SSH key to the current session
+            if ssh_key==True:
+                ssh_options = ssh_options + ' -A'
+            else:
+                if spawn_local_ssh and not os.path.isfile(ssh_key):
+                    raise ExceptionPxssh('private ssh key does not exist or is not a file.')
+                ssh_options = ssh_options + ' -i %s' % (ssh_key)
+        
+        # SSH tunnels, make sure you know what you're putting into the lists
+        # under each heading. Do not expect these to open 100% of the time,
+        # The port you're requesting might be bound.
+        #
+        # The structure should be like this:
+        # { 'local': ['2424:localhost:22'],  # Local SSH tunnels
+        # 'remote': ['2525:localhost:22'],   # Remote SSH tunnels
+        # 'dynamic': [8888] } # Dynamic/SOCKS tunnels
+        if ssh_tunnels!={} and isinstance({},type(ssh_tunnels)):
+            tunnel_types = {
+                'local':'L',
+                'remote':'R',
+                'dynamic':'D'
+            }
+            for tunnel_type in tunnel_types:
+                cmd_type = tunnel_types[tunnel_type]
+                if tunnel_type in ssh_tunnels:
+                    tunnels = ssh_tunnels[tunnel_type]
+                    for tunnel in tunnels:
+                        if spawn_local_ssh==False:
+                            tunnel = quote(str(tunnel))
+                        ssh_options = ssh_options + ' -' + cmd_type + ' ' + str(tunnel)
+        cmd = "ssh %s -l %s %s" % (ssh_options, username, server)
+        if self.debug_command_string:
+            return(cmd)
+
+        # Are we asking for a local ssh command or to spawn one in another session?
+        if spawn_local_ssh:
+            spawn._spawn(self, cmd)
+        else:
+            self.sendline(cmd)
+
+        # This does not distinguish between a remote server 'password' prompt
+        # and a local ssh 'passphrase' prompt (for unlocking a private key).
+        i = self.expect(session_init_regex_array, timeout=login_timeout)
+
+        # First phase
+        if i==0:
+            # New certificate -- always accept it.
+            # This is what you get if SSH does not have the remote host's
+            # public key stored in the 'known_hosts' cache.
+            self.sendline("yes")
+            i = self.expect(session_regex_array)
+        if i==2: # password or passphrase
+            self.sendline(password)
+            i = self.expect(session_regex_array)
+        if i==4:
+            self.sendline(terminal_type)
+            i = self.expect(session_regex_array)
+        if i==7:
+            self.close()
+            raise ExceptionPxssh('Could not establish connection to host')
+
+        # Second phase
+        if i==0:
+            # This is weird. This should not happen twice in a row.
+            self.close()
+            raise ExceptionPxssh('Weird error. Got "are you sure" prompt twice.')
+        elif i==1: # can occur if you have a public key pair set to authenticate.
+            ### TODO: May NOT be OK if expect() got tricked and matched a false prompt.
+            pass
+        elif i==2: # password prompt again
+            # For incorrect passwords, some ssh servers will
+            # ask for the password again, others return 'denied' right away.
+            # If we get the password prompt again then this means
+            # we didn't get the password right the first time.
+            self.close()
+            raise ExceptionPxssh('password refused')
+        elif i==3: # permission denied -- password was bad.
+            self.close()
+            raise ExceptionPxssh('permission denied')
+        elif i==4: # terminal type again? WTF?
+            self.close()
+            raise ExceptionPxssh('Weird error. Got "terminal type" prompt twice.')
+        elif i==5: # Timeout
+            #This is tricky... I presume that we are at the command-line prompt.
+            #It may be that the shell prompt was so weird that we couldn't match
+            #it. Or it may be that we couldn't log in for some other reason. I
+            #can't be sure, but it's safe to guess that we did login because if
+            #I presume wrong and we are not logged in then this should be caught
+            #later when I try to set the shell prompt.
+            pass
+        elif i==6: # Connection closed by remote host
+            self.close()
+            raise ExceptionPxssh('connection closed')
+        else: # Unexpected
+            self.close()
+            raise ExceptionPxssh('unexpected login response')
+        if sync_original_prompt:
+            if not self.sync_original_prompt(sync_multiplier):
+                self.close()
+                raise ExceptionPxssh('could not synchronize with original prompt')
+        # We appear to be in.
+        # set shell prompt to something unique.
+        if auto_prompt_reset:
+            if not self.set_unique_prompt():
+                self.close()
+                raise ExceptionPxssh('could not set shell prompt '
+                                     '(received: %r, expected: %r).' % (
+                                         self.before, self.PROMPT,))
+        return True
+
+    def logout (self):
+        '''Sends exit to the remote shell.
+
+        If there are stopped jobs then this automatically sends exit twice.
+        '''
+        self.sendline("exit")
+        index = self.expect([EOF, "(?i)there are stopped jobs"])
+        if index==1:
+            self.sendline("exit")
+            self.expect(EOF)
+        self.close()
+
+    def prompt(self, timeout=-1):
+        '''Match the next shell prompt.
+
+        This is little more than a short-cut to the :meth:`~pexpect.spawn.expect`
+        method. Note that if you called :meth:`login` with
+        ``auto_prompt_reset=False``, then before calling :meth:`prompt` you must
+        set the :attr:`PROMPT` attribute to a regex that it will use for
+        matching the prompt.
+
+        Calling :meth:`prompt` will erase the contents of the :attr:`before`
+        attribute even if no prompt is ever matched. If timeout is not given or
+        it is set to -1 then self.timeout is used.
+
+        :return: True if the shell prompt was matched, False if the timeout was
+                 reached.
+        '''
+
+        if timeout == -1:
+            timeout = self.timeout
+        i = self.expect([self.PROMPT, TIMEOUT], timeout=timeout)
+        if i==1:
+            return False
+        return True
+
+    def set_unique_prompt(self):
+        '''This sets the remote prompt to something more unique than ``#`` or ``$``.
+        This makes it easier for the :meth:`prompt` method to match the shell prompt
+        unambiguously. This method is called automatically by the :meth:`login`
+        method, but you may want to call it manually if you somehow reset the
+        shell prompt. For example, if you 'su' to a different user then you
+        will need to manually reset the prompt. This sends shell commands to
+        the remote host to set the prompt, so this assumes the remote host is
+        ready to receive commands.
+
+        Alternatively, you may use your own prompt pattern. In this case you
+        should call :meth:`login` with ``auto_prompt_reset=False``; then set the
+        :attr:`PROMPT` attribute to a regular expression. After that, the
+        :meth:`prompt` method will try to match your prompt pattern.
+        '''
+
+        self.sendline("unset PROMPT_COMMAND")
+        self.sendline(self.PROMPT_SET_SH) # sh-style
+        i = self.expect ([TIMEOUT, self.PROMPT], timeout=10)
+        if i == 0: # csh-style
+            self.sendline(self.PROMPT_SET_CSH)
+            i = self.expect([TIMEOUT, self.PROMPT], timeout=10)
+            if i == 0:
+                return False
+        return True
+
+# vi:ts=4:sw=4:expandtab:ft=python:
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/replwrap.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/replwrap.py
new file mode 100644
index 00000000000..ed0e657d739
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/replwrap.py
@@ -0,0 +1,122 @@
+"""Generic wrapper for read-eval-print-loops, a.k.a. interactive shells
+"""
+import os.path
+import signal
+import sys
+
+import pexpect
+
+PY3 = (sys.version_info[0] >= 3)
+
+if PY3:
+    basestring = str
+
+PEXPECT_PROMPT = u'[PEXPECT_PROMPT>'
+PEXPECT_CONTINUATION_PROMPT = u'[PEXPECT_PROMPT+'
+
+class REPLWrapper(object):
+    """Wrapper for a REPL.
+
+    :param cmd_or_spawn: This can either be an instance of :class:`pexpect.spawn`
+      in which a REPL has already been started, or a str command to start a new
+      REPL process.
+    :param str orig_prompt: The prompt to expect at first.
+    :param str prompt_change: A command to change the prompt to something more
+      unique. If this is ``None``, the prompt will not be changed. This will
+      be formatted with the new and continuation prompts as positional
+      parameters, so you can use ``{}`` style formatting to insert them into
+      the command.
+    :param str new_prompt: The more unique prompt to expect after the change.
+    :param str extra_init_cmd: Commands to do extra initialisation, such as
+      disabling pagers.
+    """
+    def __init__(self, cmd_or_spawn, orig_prompt, prompt_change,
+                 new_prompt=PEXPECT_PROMPT,
+                 continuation_prompt=PEXPECT_CONTINUATION_PROMPT,
+                 extra_init_cmd=None):
+        if isinstance(cmd_or_spawn, basestring):
+            self.child = pexpect.spawn(cmd_or_spawn, echo=False, encoding='utf-8')
+        else:
+            self.child = cmd_or_spawn
+        if self.child.echo:
+            # Existing spawn instance has echo enabled, disable it
+            # to prevent our input from being repeated to output.
+            self.child.setecho(False)
+            self.child.waitnoecho()
+
+        if prompt_change is None:
+            self.prompt = orig_prompt
+        else:
+            self.set_prompt(orig_prompt,
+                        prompt_change.format(new_prompt, continuation_prompt))
+            self.prompt = new_prompt
+        self.continuation_prompt = continuation_prompt
+
+        self._expect_prompt()
+
+        if extra_init_cmd is not None:
+            self.run_command(extra_init_cmd)
+
+    def set_prompt(self, orig_prompt, prompt_change):
+        self.child.expect(orig_prompt)
+        self.child.sendline(prompt_change)
+
+    def _expect_prompt(self, timeout=-1):
+        return self.child.expect_exact([self.prompt, self.continuation_prompt],
+                                       timeout=timeout)
+
+    def run_command(self, command, timeout=-1):
+        """Send a command to the REPL, wait for and return output.
+
+        :param str command: The command to send. Trailing newlines are not needed.
+          This should be a complete block of input that will trigger execution;
+          if a continuation prompt is found after sending input, :exc:`ValueError`
+          will be raised.
+        :param int timeout: How long to wait for the next prompt. -1 means the
+          default from the :class:`pexpect.spawn` object (default 30 seconds).
+          None means to wait indefinitely.
+        """
+        # Split up multiline commands and feed them in bit-by-bit
+        cmdlines = command.splitlines()
+        # splitlines ignores trailing newlines - add it back in manually
+        if command.endswith('\n'):
+            cmdlines.append('')
+        if not cmdlines:
+            raise ValueError("No command was given")
+
+        res = []
+        self.child.sendline(cmdlines[0])
+        for line in cmdlines[1:]:
+            self._expect_prompt(timeout=timeout)
+            res.append(self.child.before)
+            self.child.sendline(line)
+
+        # Command was fully submitted, now wait for the next prompt
+        if self._expect_prompt(timeout=timeout) == 1:
+            # We got the continuation prompt - command was incomplete
+            self.child.kill(signal.SIGINT)
+            self._expect_prompt(timeout=1)
+            raise ValueError("Continuation prompt found - input was incomplete:\n"
+                             + command)
+        return u''.join(res + [self.child.before])
+
+def python(command="python"):
+    """Start a Python shell and return a :class:`REPLWrapper` object."""
+    return REPLWrapper(command, u">>> ", u"import sys; sys.ps1={0!r}; sys.ps2={1!r}")
+
+def bash(command="bash"):
+    """Start a bash shell and return a :class:`REPLWrapper` object."""
+    bashrc = os.path.join(os.path.dirname(__file__), 'bashrc.sh')
+    child = pexpect.spawn(command, ['--rcfile', bashrc], echo=False,
+                          encoding='utf-8')
+
+    # If the user runs 'env', the value of PS1 will be in the output. To avoid
+    # replwrap seeing that as the next prompt, we'll embed the marker characters
+    # for invisible characters in the prompt; these show up when inspecting the
+    # environment variable, but not when bash displays the prompt.
+    ps1 = PEXPECT_PROMPT[:5] + u'\\[\\]' + PEXPECT_PROMPT[5:]
+    ps2 = PEXPECT_CONTINUATION_PROMPT[:5] + u'\\[\\]' + PEXPECT_CONTINUATION_PROMPT[5:]
+    prompt_change = u"PS1='{0}' PS2='{1}' PROMPT_COMMAND=''".format(ps1, ps2)
+
+    return REPLWrapper(child, u'\\$', prompt_change,
+                       extra_init_cmd="export PAGER=cat")
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/run.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/run.py
new file mode 100644
index 00000000000..d9dfe76ba58
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/run.py
@@ -0,0 +1,157 @@
+import sys
+import types
+
+from .exceptions import EOF, TIMEOUT
+from .pty_spawn import spawn
+
+def run(command, timeout=30, withexitstatus=False, events=None,
+        extra_args=None, logfile=None, cwd=None, env=None, **kwargs):
+
+    '''
+    This function runs the given command; waits for it to finish; then
+    returns all output as a string. STDERR is included in output. If the full
+    path to the command is not given then the path is searched.
+
+    Note that lines are terminated by CR/LF (\\r\\n) combination even on
+    UNIX-like systems because this is the standard for pseudottys. If you set
+    'withexitstatus' to true, then run will return a tuple of (command_output,
+    exitstatus). If 'withexitstatus' is false then this returns just
+    command_output.
+
+    The run() function can often be used instead of creating a spawn instance.
+    For example, the following code uses spawn::
+
+        from pexpect import *
+        child = spawn('scp foo user@example.com:.')
+        child.expect('(?i)password')
+        child.sendline(mypassword)
+
+    The previous code can be replace with the following::
+
+        from pexpect import *
+        run('scp foo user@example.com:.', events={'(?i)password': mypassword})
+
+    **Examples**
+
+    Start the apache daemon on the local machine::
+
+        from pexpect import *
+        run("/usr/local/apache/bin/apachectl start")
+
+    Check in a file using SVN::
+
+        from pexpect import *
+        run("svn ci -m 'automatic commit' my_file.py")
+
+    Run a command and capture exit status::
+
+        from pexpect import *
+        (command_output, exitstatus) = run('ls -l /bin', withexitstatus=1)
+
+    The following will run SSH and execute 'ls -l' on the remote machine. The
+    password 'secret' will be sent if the '(?i)password' pattern is ever seen::
+
+        run("ssh username@machine.example.com 'ls -l'",
+            events={'(?i)password':'secret\\n'})
+
+    This will start mencoder to rip a video from DVD. This will also display
+    progress ticks every 5 seconds as it runs. For example::
+
+        from pexpect import *
+        def print_ticks(d):
+            print d['event_count'],
+        run("mencoder dvd://1 -o video.avi -oac copy -ovc copy",
+            events={TIMEOUT:print_ticks}, timeout=5)
+
+    The 'events' argument should be either a dictionary or a tuple list that
+    contains patterns and responses. Whenever one of the patterns is seen
+    in the command output, run() will send the associated response string.
+    So, run() in the above example can be also written as:
+    
+        run("mencoder dvd://1 -o video.avi -oac copy -ovc copy",
+            events=[(TIMEOUT,print_ticks)], timeout=5)
+
+    Use a tuple list for events if the command output requires a delicate
+    control over what pattern should be matched, since the tuple list is passed
+    to pexpect() as its pattern list, with the order of patterns preserved.
+
+    Note that you should put newlines in your string if Enter is necessary.
+
+    Like the example above, the responses may also contain a callback, either
+    a function or method.  It should accept a dictionary value as an argument.
+    The dictionary contains all the locals from the run() function, so you can
+    access the child spawn object or any other variable defined in run()
+    (event_count, child, and extra_args are the most useful). A callback may
+    return True to stop the current run process.  Otherwise run() continues
+    until the next event. A callback may also return a string which will be
+    sent to the child. 'extra_args' is not used by directly run(). It provides
+    a way to pass data to a callback function through run() through the locals
+    dictionary passed to a callback.
+
+    Like :class:`spawn`, passing *encoding* will make it work with unicode
+    instead of bytes. You can pass *codec_errors* to control how errors in
+    encoding and decoding are handled.
+    '''
+    if timeout == -1:
+        child = spawn(command, maxread=2000, logfile=logfile, cwd=cwd, env=env,
+                        **kwargs)
+    else:
+        child = spawn(command, timeout=timeout, maxread=2000, logfile=logfile,
+                cwd=cwd, env=env, **kwargs)
+    if isinstance(events, list):
+        patterns= [x for x,y in events]
+        responses = [y for x,y in events]
+    elif isinstance(events, dict):
+        patterns = list(events.keys())
+        responses = list(events.values())
+    else:
+        # This assumes EOF or TIMEOUT will eventually cause run to terminate.
+        patterns = None
+        responses = None
+    child_result_list = []
+    event_count = 0
+    while True:
+        try:
+            index = child.expect(patterns)
+            if isinstance(child.after, child.allowed_string_types):
+                child_result_list.append(child.before + child.after)
+            else:
+                # child.after may have been a TIMEOUT or EOF,
+                # which we don't want appended to the list.
+                child_result_list.append(child.before)
+            if isinstance(responses[index], child.allowed_string_types):
+                child.send(responses[index])
+            elif (isinstance(responses[index], types.FunctionType) or
+                  isinstance(responses[index], types.MethodType)):
+                callback_result = responses[index](locals())
+                sys.stdout.flush()
+                if isinstance(callback_result, child.allowed_string_types):
+                    child.send(callback_result)
+                elif callback_result:
+                    break
+            else:
+                raise TypeError("parameter `event' at index {index} must be "
+                                "a string, method, or function: {value!r}"
+                                .format(index=index, value=responses[index]))
+            event_count = event_count + 1
+        except TIMEOUT:
+            child_result_list.append(child.before)
+            break
+        except EOF:
+            child_result_list.append(child.before)
+            break
+    child_result = child.string_type().join(child_result_list)
+    if withexitstatus:
+        child.close()
+        return (child_result, child.exitstatus)
+    else:
+        return child_result
+
+def runu(command, timeout=30, withexitstatus=False, events=None,
+        extra_args=None, logfile=None, cwd=None, env=None, **kwargs):
+    """Deprecated: pass encoding to run() instead.
+    """
+    kwargs.setdefault('encoding', 'utf-8')
+    return run(command, timeout=timeout, withexitstatus=withexitstatus,
+                events=events, extra_args=extra_args, logfile=logfile, cwd=cwd,
+                env=env, **kwargs)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/screen.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/screen.py
new file mode 100644
index 00000000000..5ab45b94679
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/screen.py
@@ -0,0 +1,431 @@
+'''This implements a virtual screen. This is used to support ANSI terminal
+emulation. The screen representation and state is implemented in this class.
+Most of the methods are inspired by ANSI screen control codes. The
+:class:`~pexpect.ANSI.ANSI` class extends this class to add parsing of ANSI
+escape codes.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+import codecs
+import copy
+import sys
+
+import warnings
+
+warnings.warn(("pexpect.screen and pexpect.ANSI are deprecated. "
+               "We recommend using pyte to emulate a terminal screen: "
+               "https://pypi.python.org/pypi/pyte"),
+               stacklevel=2)
+
+NUL = 0    # Fill character; ignored on input.
+ENQ = 5    # Transmit answerback message.
+BEL = 7    # Ring the bell.
+BS  = 8    # Move cursor left.
+HT  = 9    # Move cursor to next tab stop.
+LF = 10    # Line feed.
+VT = 11    # Same as LF.
+FF = 12    # Same as LF.
+CR = 13    # Move cursor to left margin or newline.
+SO = 14    # Invoke G1 character set.
+SI = 15    # Invoke G0 character set.
+XON = 17   # Resume transmission.
+XOFF = 19  # Halt transmission.
+CAN = 24   # Cancel escape sequence.
+SUB = 26   # Same as CAN.
+ESC = 27   # Introduce a control sequence.
+DEL = 127  # Fill character; ignored on input.
+SPACE = u' ' # Space or blank character.
+
+PY3 = (sys.version_info[0] >= 3)
+if PY3:
+    unicode = str
+
+def constrain (n, min, max):
+
+    '''This returns a number, n constrained to the min and max bounds. '''
+
+    if n < min:
+        return min
+    if n > max:
+        return max
+    return n
+
+class screen:
+    '''This object maintains the state of a virtual text screen as a
+    rectangular array. This maintains a virtual cursor position and handles
+    scrolling as characters are added. This supports most of the methods needed
+    by an ANSI text screen. Row and column indexes are 1-based (not zero-based,
+    like arrays).
+
+    Characters are represented internally using unicode. Methods that accept
+    input characters, when passed 'bytes' (which in Python 2 is equivalent to
+    'str'), convert them from the encoding specified in the 'encoding'
+    parameter to the constructor. Methods that return screen contents return
+    unicode strings, with the exception of __str__() under Python 2. Passing
+    ``encoding=None`` limits the API to only accept unicode input, so passing
+    bytes in will raise :exc:`TypeError`.
+    '''
+    def __init__(self, r=24, c=80, encoding='latin-1', encoding_errors='replace'):
+        '''This initializes a blank screen of the given dimensions.'''
+
+        self.rows = r
+        self.cols = c
+        self.encoding = encoding
+        self.encoding_errors = encoding_errors
+        if encoding is not None:
+            self.decoder = codecs.getincrementaldecoder(encoding)(encoding_errors)            
+        else:
+            self.decoder = None
+        self.cur_r = 1
+        self.cur_c = 1
+        self.cur_saved_r = 1
+        self.cur_saved_c = 1
+        self.scroll_row_start = 1
+        self.scroll_row_end = self.rows
+        self.w = [ [SPACE] * self.cols for _ in range(self.rows)]
+
+    def _decode(self, s):
+        '''This converts from the external coding system (as passed to
+        the constructor) to the internal one (unicode). '''
+        if self.decoder is not None:
+            return self.decoder.decode(s)
+        else:
+            raise TypeError("This screen was constructed with encoding=None, "
+                            "so it does not handle bytes.")
+
+    def _unicode(self):
+        '''This returns a printable representation of the screen as a unicode
+        string (which, under Python 3.x, is the same as 'str'). The end of each
+        screen line is terminated by a newline.'''
+
+        return u'\n'.join ([ u''.join(c) for c in self.w ])
+
+    if PY3:
+        __str__ = _unicode
+    else:
+        __unicode__ = _unicode
+
+        def __str__(self):
+            '''This returns a printable representation of the screen. The end of
+            each screen line is terminated by a newline. '''
+            encoding = self.encoding or 'ascii'
+            return self._unicode().encode(encoding, 'replace')
+
+    def dump (self):
+        '''This returns a copy of the screen as a unicode string. This is similar to
+        __str__/__unicode__ except that lines are not terminated with line
+        feeds.'''
+
+        return u''.join ([ u''.join(c) for c in self.w ])
+
+    def pretty (self):
+        '''This returns a copy of the screen as a unicode string with an ASCII
+        text box around the screen border. This is similar to
+        __str__/__unicode__ except that it adds a box.'''
+
+        top_bot = u'+' + u'-'*self.cols + u'+\n'
+        return top_bot + u'\n'.join([u'|'+line+u'|' for line in unicode(self).split(u'\n')]) + u'\n' + top_bot
+
+    def fill (self, ch=SPACE):
+
+        if isinstance(ch, bytes):
+            ch = self._decode(ch)
+
+        self.fill_region (1,1,self.rows,self.cols, ch)
+
+    def fill_region (self, rs,cs, re,ce, ch=SPACE):
+
+        if isinstance(ch, bytes):
+            ch = self._decode(ch)
+
+        rs = constrain (rs, 1, self.rows)
+        re = constrain (re, 1, self.rows)
+        cs = constrain (cs, 1, self.cols)
+        ce = constrain (ce, 1, self.cols)
+        if rs > re:
+            rs, re = re, rs
+        if cs > ce:
+            cs, ce = ce, cs
+        for r in range (rs, re+1):
+            for c in range (cs, ce + 1):
+                self.put_abs (r,c,ch)
+
+    def cr (self):
+        '''This moves the cursor to the beginning (col 1) of the current row.
+        '''
+
+        self.cursor_home (self.cur_r, 1)
+
+    def lf (self):
+        '''This moves the cursor down with scrolling.
+        '''
+
+        old_r = self.cur_r
+        self.cursor_down()
+        if old_r == self.cur_r:
+            self.scroll_up ()
+            self.erase_line()
+
+    def crlf (self):
+        '''This advances the cursor with CRLF properties.
+        The cursor will line wrap and the screen may scroll.
+        '''
+
+        self.cr ()
+        self.lf ()
+
+    def newline (self):
+        '''This is an alias for crlf().
+        '''
+
+        self.crlf()
+
+    def put_abs (self, r, c, ch):
+        '''Screen array starts at 1 index.'''
+
+        r = constrain (r, 1, self.rows)
+        c = constrain (c, 1, self.cols)
+        if isinstance(ch, bytes):
+            ch = self._decode(ch)[0]
+        else:
+            ch = ch[0]
+        self.w[r-1][c-1] = ch
+
+    def put (self, ch):
+        '''This puts a characters at the current cursor position.
+        '''
+
+        if isinstance(ch, bytes):
+            ch = self._decode(ch)
+
+        self.put_abs (self.cur_r, self.cur_c, ch)
+
+    def insert_abs (self, r, c, ch):
+        '''This inserts a character at (r,c). Everything under
+        and to the right is shifted right one character.
+        The last character of the line is lost.
+        '''
+
+        if isinstance(ch, bytes):
+            ch = self._decode(ch)
+
+        r = constrain (r, 1, self.rows)
+        c = constrain (c, 1, self.cols)
+        for ci in range (self.cols, c, -1):
+            self.put_abs (r,ci, self.get_abs(r,ci-1))
+        self.put_abs (r,c,ch)
+
+    def insert (self, ch):
+
+        if isinstance(ch, bytes):
+            ch = self._decode(ch)
+
+        self.insert_abs (self.cur_r, self.cur_c, ch)
+
+    def get_abs (self, r, c):
+
+        r = constrain (r, 1, self.rows)
+        c = constrain (c, 1, self.cols)
+        return self.w[r-1][c-1]
+
+    def get (self):
+
+        self.get_abs (self.cur_r, self.cur_c)
+
+    def get_region (self, rs,cs, re,ce):
+        '''This returns a list of lines representing the region.
+        '''
+
+        rs = constrain (rs, 1, self.rows)
+        re = constrain (re, 1, self.rows)
+        cs = constrain (cs, 1, self.cols)
+        ce = constrain (ce, 1, self.cols)
+        if rs > re:
+            rs, re = re, rs
+        if cs > ce:
+            cs, ce = ce, cs
+        sc = []
+        for r in range (rs, re+1):
+            line = u''
+            for c in range (cs, ce + 1):
+                ch = self.get_abs (r,c)
+                line = line + ch
+            sc.append (line)
+        return sc
+
+    def cursor_constrain (self):
+        '''This keeps the cursor within the screen area.
+        '''
+
+        self.cur_r = constrain (self.cur_r, 1, self.rows)
+        self.cur_c = constrain (self.cur_c, 1, self.cols)
+
+    def cursor_home (self, r=1, c=1): # <ESC>[{ROW};{COLUMN}H
+
+        self.cur_r = r
+        self.cur_c = c
+        self.cursor_constrain ()
+
+    def cursor_back (self,count=1): # <ESC>[{COUNT}D (not confused with down)
+
+        self.cur_c = self.cur_c - count
+        self.cursor_constrain ()
+
+    def cursor_down (self,count=1): # <ESC>[{COUNT}B (not confused with back)
+
+        self.cur_r = self.cur_r + count
+        self.cursor_constrain ()
+
+    def cursor_forward (self,count=1): # <ESC>[{COUNT}C
+
+        self.cur_c = self.cur_c + count
+        self.cursor_constrain ()
+
+    def cursor_up (self,count=1): # <ESC>[{COUNT}A
+
+        self.cur_r = self.cur_r - count
+        self.cursor_constrain ()
+
+    def cursor_up_reverse (self): # <ESC> M   (called RI -- Reverse Index)
+
+        old_r = self.cur_r
+        self.cursor_up()
+        if old_r == self.cur_r:
+            self.scroll_up()
+
+    def cursor_force_position (self, r, c): # <ESC>[{ROW};{COLUMN}f
+        '''Identical to Cursor Home.'''
+
+        self.cursor_home (r, c)
+
+    def cursor_save (self): # <ESC>[s
+        '''Save current cursor position.'''
+
+        self.cursor_save_attrs()
+
+    def cursor_unsave (self): # <ESC>[u
+        '''Restores cursor position after a Save Cursor.'''
+
+        self.cursor_restore_attrs()
+
+    def cursor_save_attrs (self): # <ESC>7
+        '''Save current cursor position.'''
+
+        self.cur_saved_r = self.cur_r
+        self.cur_saved_c = self.cur_c
+
+    def cursor_restore_attrs (self): # <ESC>8
+        '''Restores cursor position after a Save Cursor.'''
+
+        self.cursor_home (self.cur_saved_r, self.cur_saved_c)
+
+    def scroll_constrain (self):
+        '''This keeps the scroll region within the screen region.'''
+
+        if self.scroll_row_start <= 0:
+            self.scroll_row_start = 1
+        if self.scroll_row_end > self.rows:
+            self.scroll_row_end = self.rows
+
+    def scroll_screen (self): # <ESC>[r
+        '''Enable scrolling for entire display.'''
+
+        self.scroll_row_start = 1
+        self.scroll_row_end = self.rows
+
+    def scroll_screen_rows (self, rs, re): # <ESC>[{start};{end}r
+        '''Enable scrolling from row {start} to row {end}.'''
+
+        self.scroll_row_start = rs
+        self.scroll_row_end = re
+        self.scroll_constrain()
+
+    def scroll_down (self): # <ESC>D
+        '''Scroll display down one line.'''
+
+        # Screen is indexed from 1, but arrays are indexed from 0.
+        s = self.scroll_row_start - 1
+        e = self.scroll_row_end - 1
+        self.w[s+1:e+1] = copy.deepcopy(self.w[s:e])
+
+    def scroll_up (self): # <ESC>M
+        '''Scroll display up one line.'''
+
+        # Screen is indexed from 1, but arrays are indexed from 0.
+        s = self.scroll_row_start - 1
+        e = self.scroll_row_end - 1
+        self.w[s:e] = copy.deepcopy(self.w[s+1:e+1])
+
+    def erase_end_of_line (self): # <ESC>[0K -or- <ESC>[K
+        '''Erases from the current cursor position to the end of the current
+        line.'''
+
+        self.fill_region (self.cur_r, self.cur_c, self.cur_r, self.cols)
+
+    def erase_start_of_line (self): # <ESC>[1K
+        '''Erases from the current cursor position to the start of the current
+        line.'''
+
+        self.fill_region (self.cur_r, 1, self.cur_r, self.cur_c)
+
+    def erase_line (self): # <ESC>[2K
+        '''Erases the entire current line.'''
+
+        self.fill_region (self.cur_r, 1, self.cur_r, self.cols)
+
+    def erase_down (self): # <ESC>[0J -or- <ESC>[J
+        '''Erases the screen from the current line down to the bottom of the
+        screen.'''
+
+        self.erase_end_of_line ()
+        self.fill_region (self.cur_r + 1, 1, self.rows, self.cols)
+
+    def erase_up (self): # <ESC>[1J
+        '''Erases the screen from the current line up to the top of the
+        screen.'''
+
+        self.erase_start_of_line ()
+        self.fill_region (self.cur_r-1, 1, 1, self.cols)
+
+    def erase_screen (self): # <ESC>[2J
+        '''Erases the screen with the background color.'''
+
+        self.fill ()
+
+    def set_tab (self): # <ESC>H
+        '''Sets a tab at the current position.'''
+
+        pass
+
+    def clear_tab (self): # <ESC>[g
+        '''Clears tab at the current position.'''
+
+        pass
+
+    def clear_all_tabs (self): # <ESC>[3g
+        '''Clears all tabs.'''
+
+        pass
+
+#        Insert line             Esc [ Pn L
+#        Delete line             Esc [ Pn M
+#        Delete character        Esc [ Pn P
+#        Scrolling region        Esc [ Pn(top);Pn(bot) r
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/spawnbase.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/spawnbase.py
new file mode 100644
index 00000000000..63c0b4204eb
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/spawnbase.py
@@ -0,0 +1,522 @@
+from io import StringIO, BytesIO
+import codecs
+import os
+import sys
+import re
+import errno
+from .exceptions import ExceptionPexpect, EOF, TIMEOUT
+from .expect import Expecter, searcher_string, searcher_re
+
+PY3 = (sys.version_info[0] >= 3)
+text_type = str if PY3 else unicode
+
+class _NullCoder(object):
+    """Pass bytes through unchanged."""
+    @staticmethod
+    def encode(b, final=False):
+        return b
+
+    @staticmethod
+    def decode(b, final=False):
+        return b
+
+class SpawnBase(object):
+    """A base class providing the backwards-compatible spawn API for Pexpect.
+
+    This should not be instantiated directly: use :class:`pexpect.spawn` or
+    :class:`pexpect.fdpexpect.fdspawn`.
+    """
+    encoding = None
+    pid = None
+    flag_eof = False
+
+    def __init__(self, timeout=30, maxread=2000, searchwindowsize=None,
+                 logfile=None, encoding=None, codec_errors='strict'):
+        self.stdin = sys.stdin
+        self.stdout = sys.stdout
+        self.stderr = sys.stderr
+
+        self.searcher = None
+        self.ignorecase = False
+        self.before = None
+        self.after = None
+        self.match = None
+        self.match_index = None
+        self.terminated = True
+        self.exitstatus = None
+        self.signalstatus = None
+        # status returned by os.waitpid
+        self.status = None
+        # the child file descriptor is initially closed
+        self.child_fd = -1
+        self.timeout = timeout
+        self.delimiter = EOF
+        self.logfile = logfile
+        # input from child (read_nonblocking)
+        self.logfile_read = None
+        # output to send (send, sendline)
+        self.logfile_send = None
+        # max bytes to read at one time into buffer
+        self.maxread = maxread
+        # Data before searchwindowsize point is preserved, but not searched.
+        self.searchwindowsize = searchwindowsize
+        # Delay used before sending data to child. Time in seconds.
+        # Set this to None to skip the time.sleep() call completely.
+        self.delaybeforesend = 0.05
+        # Used by close() to give kernel time to update process status.
+        # Time in seconds.
+        self.delayafterclose = 0.1
+        # Used by terminate() to give kernel time to update process status.
+        # Time in seconds.
+        self.delayafterterminate = 0.1
+        # Delay in seconds to sleep after each call to read_nonblocking().
+        # Set this to None to skip the time.sleep() call completely: that
+        # would restore the behavior from pexpect-2.0 (for performance
+        # reasons or because you don't want to release Python's global
+        # interpreter lock).
+        self.delayafterread = 0.0001
+        self.softspace = False
+        self.name = '<' + repr(self) + '>'
+        self.closed = True
+
+        # Unicode interface
+        self.encoding = encoding
+        self.codec_errors = codec_errors
+        if encoding is None:
+            # bytes mode (accepts some unicode for backwards compatibility)
+            self._encoder = self._decoder = _NullCoder()
+            self.string_type = bytes
+            self.buffer_type = BytesIO
+            self.crlf = b'\r\n'
+            if PY3:
+                self.allowed_string_types = (bytes, str)
+                self.linesep = os.linesep.encode('ascii')
+                def write_to_stdout(b):
+                    try:
+                        return sys.stdout.buffer.write(b)
+                    except AttributeError:
+                        # If stdout has been replaced, it may not have .buffer
+                        return sys.stdout.write(b.decode('ascii', 'replace'))
+                self.write_to_stdout = write_to_stdout
+            else:
+                self.allowed_string_types = (basestring,)  # analysis:ignore
+                self.linesep = os.linesep
+                self.write_to_stdout = sys.stdout.write
+        else:
+            # unicode mode
+            self._encoder = codecs.getincrementalencoder(encoding)(codec_errors)
+            self._decoder = codecs.getincrementaldecoder(encoding)(codec_errors)
+            self.string_type = text_type
+            self.buffer_type = StringIO
+            self.crlf = u'\r\n'
+            self.allowed_string_types = (text_type, )
+            if PY3:
+                self.linesep = os.linesep
+            else:
+                self.linesep = os.linesep.decode('ascii')
+            # This can handle unicode in both Python 2 and 3
+            self.write_to_stdout = sys.stdout.write
+        # storage for async transport
+        self.async_pw_transport = None
+        # This is the read buffer. See maxread.
+        self._buffer = self.buffer_type()
+
+    def _log(self, s, direction):
+        if self.logfile is not None:
+            self.logfile.write(s)
+            self.logfile.flush()
+        second_log = self.logfile_send if (direction=='send') else self.logfile_read
+        if second_log is not None:
+            second_log.write(s)
+            second_log.flush()
+
+    # For backwards compatibility, in bytes mode (when encoding is None)
+    # unicode is accepted for send and expect. Unicode mode is strictly unicode
+    # only.
+    def _coerce_expect_string(self, s):
+        if self.encoding is None and not isinstance(s, bytes):
+            return s.encode('ascii')
+        return s
+
+    def _coerce_send_string(self, s):
+        if self.encoding is None and not isinstance(s, bytes):
+            return s.encode('utf-8')
+        return s
+
+    def _get_buffer(self):
+        return self._buffer.getvalue()
+
+    def _set_buffer(self, value):
+        self._buffer = self.buffer_type()
+        self._buffer.write(value)
+
+    # This property is provided for backwards compatability (self.buffer used
+    # to be a string/bytes object)
+    buffer = property(_get_buffer, _set_buffer)
+
+    def read_nonblocking(self, size=1, timeout=None):
+        """This reads data from the file descriptor.
+
+        This is a simple implementation suitable for a regular file. Subclasses using ptys or pipes should override it.
+
+        The timeout parameter is ignored.
+        """
+
+        try:
+            s = os.read(self.child_fd, size)
+        except OSError as err:
+            if err.args[0] == errno.EIO:
+                # Linux-style EOF
+                self.flag_eof = True
+                raise EOF('End Of File (EOF). Exception style platform.')
+            raise
+        if s == b'':
+            # BSD-style EOF
+            self.flag_eof = True
+            raise EOF('End Of File (EOF). Empty string style platform.')
+
+        s = self._decoder.decode(s, final=False)
+        self._log(s, 'read')
+        return s
+
+    def _pattern_type_err(self, pattern):
+        raise TypeError('got {badtype} ({badobj!r}) as pattern, must be one'
+                        ' of: {goodtypes}, pexpect.EOF, pexpect.TIMEOUT'\
+                        .format(badtype=type(pattern),
+                                badobj=pattern,
+                                goodtypes=', '.join([str(ast)\
+                                    for ast in self.allowed_string_types])
+                                )
+                        )
+
+    def compile_pattern_list(self, patterns):
+        '''This compiles a pattern-string or a list of pattern-strings.
+        Patterns must be a StringType, EOF, TIMEOUT, SRE_Pattern, or a list of
+        those. Patterns may also be None which results in an empty list (you
+        might do this if waiting for an EOF or TIMEOUT condition without
+        expecting any pattern).
+
+        This is used by expect() when calling expect_list(). Thus expect() is
+        nothing more than::
+
+             cpl = self.compile_pattern_list(pl)
+             return self.expect_list(cpl, timeout)
+
+        If you are using expect() within a loop it may be more
+        efficient to compile the patterns first and then call expect_list().
+        This avoid calls in a loop to compile_pattern_list()::
+
+             cpl = self.compile_pattern_list(my_pattern)
+             while some_condition:
+                ...
+                i = self.expect_list(cpl, timeout)
+                ...
+        '''
+
+        if patterns is None:
+            return []
+        if not isinstance(patterns, list):
+            patterns = [patterns]
+
+        # Allow dot to match \n
+        compile_flags = re.DOTALL
+        if self.ignorecase:
+            compile_flags = compile_flags | re.IGNORECASE
+        compiled_pattern_list = []
+        for idx, p in enumerate(patterns):
+            if isinstance(p, self.allowed_string_types):
+                p = self._coerce_expect_string(p)
+                compiled_pattern_list.append(re.compile(p, compile_flags))
+            elif p is EOF:
+                compiled_pattern_list.append(EOF)
+            elif p is TIMEOUT:
+                compiled_pattern_list.append(TIMEOUT)
+            elif isinstance(p, type(re.compile(''))):
+                compiled_pattern_list.append(p)
+            else:
+                self._pattern_type_err(p)
+        return compiled_pattern_list
+
+    def expect(self, pattern, timeout=-1, searchwindowsize=-1, async_=False, **kw):
+        '''This seeks through the stream until a pattern is matched. The
+        pattern is overloaded and may take several types. The pattern can be a
+        StringType, EOF, a compiled re, or a list of any of those types.
+        Strings will be compiled to re types. This returns the index into the
+        pattern list. If the pattern was not a list this returns index 0 on a
+        successful match. This may raise exceptions for EOF or TIMEOUT. To
+        avoid the EOF or TIMEOUT exceptions add EOF or TIMEOUT to the pattern
+        list. That will cause expect to match an EOF or TIMEOUT condition
+        instead of raising an exception.
+
+        If you pass a list of patterns and more than one matches, the first
+        match in the stream is chosen. If more than one pattern matches at that
+        point, the leftmost in the pattern list is chosen. For example::
+
+            # the input is 'foobar'
+            index = p.expect(['bar', 'foo', 'foobar'])
+            # returns 1('foo') even though 'foobar' is a "better" match
+
+        Please note, however, that buffering can affect this behavior, since
+        input arrives in unpredictable chunks. For example::
+
+            # the input is 'foobar'
+            index = p.expect(['foobar', 'foo'])
+            # returns 0('foobar') if all input is available at once,
+            # but returns 1('foo') if parts of the final 'bar' arrive late
+
+        When a match is found for the given pattern, the class instance
+        attribute *match* becomes an re.MatchObject result.  Should an EOF
+        or TIMEOUT pattern match, then the match attribute will be an instance
+        of that exception class.  The pairing before and after class
+        instance attributes are views of the data preceding and following
+        the matching pattern.  On general exception, class attribute
+        *before* is all data received up to the exception, while *match* and
+        *after* attributes are value None.
+
+        When the keyword argument timeout is -1 (default), then TIMEOUT will
+        raise after the default value specified by the class timeout
+        attribute. When None, TIMEOUT will not be raised and may block
+        indefinitely until match.
+
+        When the keyword argument searchwindowsize is -1 (default), then the
+        value specified by the class maxread attribute is used.
+
+        A list entry may be EOF or TIMEOUT instead of a string. This will
+        catch these exceptions and return the index of the list entry instead
+        of raising the exception. The attribute 'after' will be set to the
+        exception type. The attribute 'match' will be None. This allows you to
+        write code like this::
+
+                index = p.expect(['good', 'bad', pexpect.EOF, pexpect.TIMEOUT])
+                if index == 0:
+                    do_something()
+                elif index == 1:
+                    do_something_else()
+                elif index == 2:
+                    do_some_other_thing()
+                elif index == 3:
+                    do_something_completely_different()
+
+        instead of code like this::
+
+                try:
+                    index = p.expect(['good', 'bad'])
+                    if index == 0:
+                        do_something()
+                    elif index == 1:
+                        do_something_else()
+                except EOF:
+                    do_some_other_thing()
+                except TIMEOUT:
+                    do_something_completely_different()
+
+        These two forms are equivalent. It all depends on what you want. You
+        can also just expect the EOF if you are waiting for all output of a
+        child to finish. For example::
+
+                p = pexpect.spawn('/bin/ls')
+                p.expect(pexpect.EOF)
+                print p.before
+
+        If you are trying to optimize for speed then see expect_list().
+
+        On Python 3.4, or Python 3.3 with asyncio installed, passing
+        ``async_=True``  will make this return an :mod:`asyncio` coroutine,
+        which you can yield from to get the same result that this method would
+        normally give directly. So, inside a coroutine, you can replace this code::
+
+            index = p.expect(patterns)
+
+        With this non-blocking form::
+
+            index = yield from p.expect(patterns, async_=True)
+        '''
+        if 'async' in kw:
+            async_ = kw.pop('async')
+        if kw:
+            raise TypeError("Unknown keyword arguments: {}".format(kw))
+
+        compiled_pattern_list = self.compile_pattern_list(pattern)
+        return self.expect_list(compiled_pattern_list,
+                timeout, searchwindowsize, async_)
+
+    def expect_list(self, pattern_list, timeout=-1, searchwindowsize=-1,
+                    async_=False, **kw):
+        '''This takes a list of compiled regular expressions and returns the
+        index into the pattern_list that matched the child output. The list may
+        also contain EOF or TIMEOUT(which are not compiled regular
+        expressions). This method is similar to the expect() method except that
+        expect_list() does not recompile the pattern list on every call. This
+        may help if you are trying to optimize for speed, otherwise just use
+        the expect() method.  This is called by expect().
+
+
+        Like :meth:`expect`, passing ``async_=True`` will make this return an
+        asyncio coroutine.
+        '''
+        if timeout == -1:
+            timeout = self.timeout
+        if 'async' in kw:
+            async_ = kw.pop('async')
+        if kw:
+            raise TypeError("Unknown keyword arguments: {}".format(kw))
+
+        exp = Expecter(self, searcher_re(pattern_list), searchwindowsize)
+        if async_:
+            from ._async import expect_async
+            return expect_async(exp, timeout)
+        else:
+            return exp.expect_loop(timeout)
+
+    def expect_exact(self, pattern_list, timeout=-1, searchwindowsize=-1,
+                     async_=False, **kw):
+
+        '''This is similar to expect(), but uses plain string matching instead
+        of compiled regular expressions in 'pattern_list'. The 'pattern_list'
+        may be a string; a list or other sequence of strings; or TIMEOUT and
+        EOF.
+
+        This call might be faster than expect() for two reasons: string
+        searching is faster than RE matching and it is possible to limit the
+        search to just the end of the input buffer.
+
+        This method is also useful when you don't want to have to worry about
+        escaping regular expression characters that you want to match.
+
+        Like :meth:`expect`, passing ``async_=True`` will make this return an
+        asyncio coroutine.
+        '''
+        if timeout == -1:
+            timeout = self.timeout
+        if 'async' in kw:
+            async_ = kw.pop('async')
+        if kw:
+            raise TypeError("Unknown keyword arguments: {}".format(kw))
+
+        if (isinstance(pattern_list, self.allowed_string_types) or
+                pattern_list in (TIMEOUT, EOF)):
+            pattern_list = [pattern_list]
+
+        def prepare_pattern(pattern):
+            if pattern in (TIMEOUT, EOF):
+                return pattern
+            if isinstance(pattern, self.allowed_string_types):
+                return self._coerce_expect_string(pattern)
+            self._pattern_type_err(pattern)
+
+        try:
+            pattern_list = iter(pattern_list)
+        except TypeError:
+            self._pattern_type_err(pattern_list)
+        pattern_list = [prepare_pattern(p) for p in pattern_list]
+
+        exp = Expecter(self, searcher_string(pattern_list), searchwindowsize)
+        if async_:
+            from ._async import expect_async
+            return expect_async(exp, timeout)
+        else:
+            return exp.expect_loop(timeout)
+
+    def expect_loop(self, searcher, timeout=-1, searchwindowsize=-1):
+        '''This is the common loop used inside expect. The 'searcher' should be
+        an instance of searcher_re or searcher_string, which describes how and
+        what to search for in the input.
+
+        See expect() for other arguments, return value and exceptions. '''
+
+        exp = Expecter(self, searcher, searchwindowsize)
+        return exp.expect_loop(timeout)
+
+    def read(self, size=-1):
+        '''This reads at most "size" bytes from the file (less if the read hits
+        EOF before obtaining size bytes). If the size argument is negative or
+        omitted, read all data until EOF is reached. The bytes are returned as
+        a string object. An empty string is returned when EOF is encountered
+        immediately. '''
+
+        if size == 0:
+            return self.string_type()
+        if size < 0:
+            # delimiter default is EOF
+            self.expect(self.delimiter)
+            return self.before
+
+        # I could have done this more directly by not using expect(), but
+        # I deliberately decided to couple read() to expect() so that
+        # I would catch any bugs early and ensure consistent behavior.
+        # It's a little less efficient, but there is less for me to
+        # worry about if I have to later modify read() or expect().
+        # Note, it's OK if size==-1 in the regex. That just means it
+        # will never match anything in which case we stop only on EOF.
+        cre = re.compile(self._coerce_expect_string('.{%d}' % size), re.DOTALL)
+        # delimiter default is EOF
+        index = self.expect([cre, self.delimiter])
+        if index == 0:
+            ### FIXME self.before should be ''. Should I assert this?
+            return self.after
+        return self.before
+
+    def readline(self, size=-1):
+        '''This reads and returns one entire line. The newline at the end of
+        line is returned as part of the string, unless the file ends without a
+        newline. An empty string is returned if EOF is encountered immediately.
+        This looks for a newline as a CR/LF pair (\\r\\n) even on UNIX because
+        this is what the pseudotty device returns. So contrary to what you may
+        expect you will receive newlines as \\r\\n.
+
+        If the size argument is 0 then an empty string is returned. In all
+        other cases the size argument is ignored, which is not standard
+        behavior for a file-like object. '''
+
+        if size == 0:
+            return self.string_type()
+        # delimiter default is EOF
+        index = self.expect([self.crlf, self.delimiter])
+        if index == 0:
+            return self.before + self.crlf
+        else:
+            return self.before
+
+    def __iter__(self):
+        '''This is to support iterators over a file-like object.
+        '''
+        return iter(self.readline, self.string_type())
+
+    def readlines(self, sizehint=-1):
+        '''This reads until EOF using readline() and returns a list containing
+        the lines thus read. The optional 'sizehint' argument is ignored.
+        Remember, because this reads until EOF that means the child
+        process should have closed its stdout. If you run this method on
+        a child that is still running with its stdout open then this
+        method will block until it timesout.'''
+
+        lines = []
+        while True:
+            line = self.readline()
+            if not line:
+                break
+            lines.append(line)
+        return lines
+
+    def fileno(self):
+        '''Expose file descriptor for a file-like interface
+        '''
+        return self.child_fd
+
+    def flush(self):
+        '''This does nothing. It is here to support the interface for a
+        File-like object. '''
+        pass
+
+    def isatty(self):
+        """Overridden in subclass using tty"""
+        return False
+
+    # For 'with spawn(...) as child:'
+    def __enter__(self):
+        return self
+
+    def __exit__(self, etype, evalue, tb):
+        # We rely on subclasses to implement close(). If they don't, it's not
+        # clear what a context manager should do.
+        self.close()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/pexpect/utils.py b/lldb/third_party/Python/module/pexpect-4.6/pexpect/utils.py
new file mode 100644
index 00000000000..f7745196090
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/pexpect/utils.py
@@ -0,0 +1,187 @@
+import os
+import sys
+import stat
+import select
+import time
+import errno
+
+try:
+    InterruptedError
+except NameError:
+    # Alias Python2 exception to Python3
+    InterruptedError = select.error
+
+if sys.version_info[0] >= 3:
+    string_types = (str,)
+else:
+    string_types = (unicode, str)
+
+
+def is_executable_file(path):
+    """Checks that path is an executable regular file, or a symlink towards one.
+
+    This is roughly ``os.path isfile(path) and os.access(path, os.X_OK)``.
+    """
+    # follow symlinks,
+    fpath = os.path.realpath(path)
+
+    if not os.path.isfile(fpath):
+        # non-files (directories, fifo, etc.)
+        return False
+
+    mode = os.stat(fpath).st_mode
+
+    if (sys.platform.startswith('sunos')
+            and os.getuid() == 0):
+        # When root on Solaris, os.X_OK is True for *all* files, irregardless
+        # of their executability -- instead, any permission bit of any user,
+        # group, or other is fine enough.
+        #
+        # (This may be true for other "Unix98" OS's such as HP-UX and AIX)
+        return bool(mode & (stat.S_IXUSR |
+                            stat.S_IXGRP |
+                            stat.S_IXOTH))
+
+    return os.access(fpath, os.X_OK)
+
+
+def which(filename, env=None):
+    '''This takes a given filename; tries to find it in the environment path;
+    then checks if it is executable. This returns the full path to the filename
+    if found and executable. Otherwise this returns None.'''
+
+    # Special case where filename contains an explicit path.
+    if os.path.dirname(filename) != '' and is_executable_file(filename):
+        return filename
+    if env is None:
+        env = os.environ
+    p = env.get('PATH')
+    if not p:
+        p = os.defpath
+    pathlist = p.split(os.pathsep)
+    for path in pathlist:
+        ff = os.path.join(path, filename)
+        if is_executable_file(ff):
+            return ff
+    return None
+
+
+def split_command_line(command_line):
+
+    '''This splits a command line into a list of arguments. It splits arguments
+    on spaces, but handles embedded quotes, doublequotes, and escaped
+    characters. It's impossible to do this with a regular expression, so I
+    wrote a little state machine to parse the command line. '''
+
+    arg_list = []
+    arg = ''
+
+    # Constants to name the states we can be in.
+    state_basic = 0
+    state_esc = 1
+    state_singlequote = 2
+    state_doublequote = 3
+    # The state when consuming whitespace between commands.
+    state_whitespace = 4
+    state = state_basic
+
+    for c in command_line:
+        if state == state_basic or state == state_whitespace:
+            if c == '\\':
+                # Escape the next character
+                state = state_esc
+            elif c == r"'":
+                # Handle single quote
+                state = state_singlequote
+            elif c == r'"':
+                # Handle double quote
+                state = state_doublequote
+            elif c.isspace():
+                # Add arg to arg_list if we aren't in the middle of whitespace.
+                if state == state_whitespace:
+                    # Do nothing.
+                    None
+                else:
+                    arg_list.append(arg)
+                    arg = ''
+                    state = state_whitespace
+            else:
+                arg = arg + c
+                state = state_basic
+        elif state == state_esc:
+            arg = arg + c
+            state = state_basic
+        elif state == state_singlequote:
+            if c == r"'":
+                state = state_basic
+            else:
+                arg = arg + c
+        elif state == state_doublequote:
+            if c == r'"':
+                state = state_basic
+            else:
+                arg = arg + c
+
+    if arg != '':
+        arg_list.append(arg)
+    return arg_list
+
+
+def select_ignore_interrupts(iwtd, owtd, ewtd, timeout=None):
+
+    '''This is a wrapper around select.select() that ignores signals. If
+    select.select raises a select.error exception and errno is an EINTR
+    error then it is ignored. Mainly this is used to ignore sigwinch
+    (terminal resize). '''
+
+    # if select() is interrupted by a signal (errno==EINTR) then
+    # we loop back and enter the select() again.
+    if timeout is not None:
+        end_time = time.time() + timeout
+    while True:
+        try:
+            return select.select(iwtd, owtd, ewtd, timeout)
+        except InterruptedError:
+            err = sys.exc_info()[1]
+            if err.args[0] == errno.EINTR:
+                # if we loop back we have to subtract the
+                # amount of time we already waited.
+                if timeout is not None:
+                    timeout = end_time - time.time()
+                    if timeout < 0:
+                        return([], [], [])
+            else:
+                # something else caused the select.error, so
+                # this actually is an exception.
+                raise
+
+
+def poll_ignore_interrupts(fds, timeout=None):
+    '''Simple wrapper around poll to register file descriptors and
+    ignore signals.'''
+
+    if timeout is not None:
+        end_time = time.time() + timeout
+
+    poller = select.poll()
+    for fd in fds:
+        poller.register(fd, select.POLLIN | select.POLLPRI | select.POLLHUP | select.POLLERR)
+
+    while True:
+        try:
+            timeout_ms = None if timeout is None else timeout * 1000
+            results = poller.poll(timeout_ms)
+            return [afd for afd, _ in results]
+        except InterruptedError:
+            err = sys.exc_info()[1]
+            if err.args[0] == errno.EINTR:
+                # if we loop back we have to subtract the
+                # amount of time we already waited.
+                if timeout is not None:
+                    timeout = end_time - time.time()
+                    if timeout < 0:
+                        return []
+            else:
+                # something else caused the select.error, so
+                # this actually is an exception.
+                raise
diff --git a/lldb/third_party/Python/module/pexpect-4.6/requirements-testing.txt b/lldb/third_party/Python/module/pexpect-4.6/requirements-testing.txt
new file mode 100644
index 00000000000..1894122c85c
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/requirements-testing.txt
@@ -0,0 +1,5 @@
+pytest
+pytest-cov
+coverage
+coveralls
+pytest-capturelog
diff --git a/lldb/third_party/Python/module/pexpect-4.6/setup.cfg b/lldb/third_party/Python/module/pexpect-4.6/setup.cfg
new file mode 100644
index 00000000000..b2a82dcdc6c
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/setup.cfg
@@ -0,0 +1,5 @@
+[tool:pytest]
+norecursedirs = .git
+
+[bdist_wheel]
+universal=1
diff --git a/lldb/third_party/Python/module/pexpect-4.6/setup.py b/lldb/third_party/Python/module/pexpect-4.6/setup.py
new file mode 100644
index 00000000000..4e61e795c2a
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/setup.py
@@ -0,0 +1,71 @@
+# encoding: utf-8
+from distutils.core import setup
+import os
+import re
+import sys
+
+if any(a == 'bdist_wheel' for a in sys.argv):
+    from setuptools import setup
+
+with open(os.path.join(os.path.dirname(__file__), 'pexpect', '__init__.py'), 'r') as f:
+    for line in f:
+        version_match = re.search(r"__version__ = ['\"]([^'\"]*)['\"]", line)
+        if version_match:
+            version = version_match.group(1)
+            break
+    else:
+        raise Exception("couldn't find version number")
+
+long_description = """
+Pexpect is a pure Python module for spawning child applications; controlling
+them; and responding to expected patterns in their output. Pexpect works like
+Don Libes' Expect. Pexpect allows your script to spawn a child application and
+control it as if a human were typing commands.
+
+Pexpect can be used for automating interactive applications such as ssh, ftp,
+passwd, telnet, etc. It can be used to a automate setup scripts for duplicating
+software package installations on different servers. It can be used for
+automated software testing. Pexpect is in the spirit of Don Libes' Expect, but
+Pexpect is pure Python.
+
+The main features of Pexpect require the pty module in the Python standard
+library, which is only available on Unix-like systems. Some features—waiting
+for patterns from file descriptors or subprocesses—are also available on
+Windows.
+"""
+
+setup(name='pexpect',
+    version=version,
+    packages=['pexpect'],
+    package_data={'pexpect': ['bashrc.sh']},
+    description='Pexpect allows easy control of interactive console applications.',
+    long_description=long_description,
+    author='Noah Spurrier; Thomas Kluyver; Jeff Quast',
+    author_email='noah@noah.org, thomas@kluyver.me.uk, contact@jeffquast.com',
+    url='https://pexpect.readthedocs.io/',
+    license='ISC license',
+    platforms='UNIX',
+    classifiers = [
+        'Development Status :: 5 - Production/Stable',
+        'Environment :: Console',
+        'Intended Audience :: Developers',
+        'Intended Audience :: System Administrators',
+        'License :: OSI Approved :: ISC License (ISCL)',
+        'Operating System :: POSIX',
+        'Operating System :: MacOS :: MacOS X',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Topic :: Software Development',
+        'Topic :: Software Development :: Libraries :: Python Modules',
+        'Topic :: Software Development :: Quality Assurance',
+        'Topic :: Software Development :: Testing',
+        'Topic :: System',
+        'Topic :: System :: Archiving :: Packaging',
+        'Topic :: System :: Installation/Setup',
+        'Topic :: System :: Shells',
+        'Topic :: System :: Software Distribution',
+        'Topic :: Terminals',
+    ],
+    install_requires=['ptyprocess>=0.5'],
+)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/PexpectTestCase.py b/lldb/third_party/Python/module/pexpect-4.6/tests/PexpectTestCase.py
new file mode 100644
index 00000000000..307437efad3
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/PexpectTestCase.py
@@ -0,0 +1,108 @@
+
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from __future__ import print_function
+
+import contextlib
+import unittest
+import signal
+import sys
+import os
+
+
+class PexpectTestCase(unittest.TestCase):
+    def setUp(self):
+        self.PYTHONBIN = sys.executable
+        self.original_path = os.getcwd()
+        tests_dir = os.path.dirname(__file__)
+        self.project_dir = project_dir = os.path.dirname(tests_dir)
+
+        # all tests are executed in this folder; there are many auxiliary
+        # programs in this folder executed by spawn().
+        os.chdir(tests_dir)
+
+        # If the pexpect raises an exception after fork(), but before
+        # exec(), our test runner *also* forks.  We prevent this by
+        # storing our pid and asserting equality on tearDown.
+        self.pid = os.getpid()
+
+        coverage_rc = os.path.join(project_dir, '.coveragerc')
+        os.environ['COVERAGE_PROCESS_START'] = coverage_rc
+        os.environ['COVERAGE_FILE'] = os.path.join(project_dir, '.coverage')
+        print('\n', self.id(), end=' ')
+        sys.stdout.flush()
+
+        # some build agents will ignore SIGHUP and SIGINT, which python
+        # inherits.  This causes some of the tests related to terminate()
+        # to fail.  We set them to the default handlers that they should
+        # be, and restore them back to their SIG_IGN value on tearDown.
+        #
+        # I'm not entirely convinced they need to be restored, only our
+        # test runner is affected.
+        self.restore_ignored_signals = [
+            value for value in (signal.SIGHUP, signal.SIGINT,)
+            if signal.getsignal(value) == signal.SIG_IGN]
+        if signal.SIGHUP in self.restore_ignored_signals:
+            # sighup should be set to default handler
+            signal.signal(signal.SIGHUP, signal.SIG_DFL)
+        if signal.SIGINT in self.restore_ignored_signals:
+            # SIGINT should be set to signal.default_int_handler
+            signal.signal(signal.SIGINT, signal.default_int_handler)
+        unittest.TestCase.setUp(self)
+
+    def tearDown(self):
+        # restore original working folder
+        os.chdir(self.original_path)
+
+        if self.pid != os.getpid():
+            # The build server pattern-matches phrase 'Test runner has forked!'
+            print("Test runner has forked! This means a child process raised "
+                  "an exception before exec() in a test case, the error is "
+                  "more than likely found above this line in stderr.",
+                  file=sys.stderr)
+            exit(1)
+
+        # restore signal handlers
+        for signal_value in self.restore_ignored_signals:
+            signal.signal(signal_value, signal.SIG_IGN)
+
+    if sys.version_info < (2, 7):
+        # We want to use these methods, which are new/improved in 2.7, but
+        # we are still supporting 2.6 for the moment. This section can be
+        # removed when we drop Python 2.6 support.
+        @contextlib.contextmanager
+        def assertRaises(self, excClass):
+            try:
+                yield
+            except Exception as e:
+                assert isinstance(e, excClass)
+            else:
+                raise AssertionError("%s was not raised" % excClass)
+
+        @contextlib.contextmanager
+        def assertRaisesRegexp(self, excClass, pattern):
+            import re
+            try:
+                yield
+            except Exception as e:
+                assert isinstance(e, excClass)
+                assert re.match(pattern, str(e))
+            else:
+                raise AssertionError("%s was not raised" % excClass)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/README b/lldb/third_party/Python/module/pexpect-4.6/tests/README
new file mode 100644
index 00000000000..ef5b613498e
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/README
@@ -0,0 +1,8 @@
+
+The best way to run these tests is from the directory above this one. Run:
+
+    py.test
+
+To run a specific test file:
+
+    py.test tests/test_constructor.py
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/TESTDATA.txt b/lldb/third_party/Python/module/pexpect-4.6/tests/TESTDATA.txt
new file mode 100644
index 00000000000..adb9c01360f
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/TESTDATA.txt
@@ -0,0 +1,8 @@
+This is test data.
+    One
+    2
+    THREE
+    IV
+    .....
+    110
+This is the end of test data: END
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/__init__.py b/lldb/third_party/Python/module/pexpect-4.6/tests/__init__.py
new file mode 100755
index 00000000000..f717d82ecf5
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/__init__.py
@@ -0,0 +1,25 @@
+
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+# __init__.py
+# The mere presence of this file makes the dir a package.
+pass
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/adhoc.py b/lldb/third_party/Python/module/pexpect-4.6/tests/adhoc.py
new file mode 100755
index 00000000000..0813d349ee9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/adhoc.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from  __future__ import print_function
+
+import pexpect
+import time
+
+p = pexpect.spawn ('./a.out')
+print(p.exitstatus)
+p.expect (pexpect.EOF)
+print(p.before)
+time.sleep(1)
+print('exitstatus:', p.exitstatus)
+print('isalive',p.isalive())
+print('exitstatus',p.exitstatus)
+print('isalive',p.isalive())
+print('exitstatus',p.exitstatus)
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/alarm_die.py b/lldb/third_party/Python/module/pexpect-4.6/tests/alarm_die.py
new file mode 100644
index 00000000000..a1519abac1d
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/alarm_die.py
@@ -0,0 +1,5 @@
+import signal, time
+
+signal.alarm(1) # Schedule SIGALRM in 1s
+
+time.sleep(6)
\ No newline at end of file
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/bambi.vt b/lldb/third_party/Python/module/pexpect-4.6/tests/bambi.vt
new file mode 100644
index 00000000000..853f099b4c5
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/bambi.vt
@@ -0,0 +1,417 @@
+[?25l
+
+
+                         The
+                         The Adventures
+                         The Adventures of
+                         The Adventures of BAMBI
+                                                            
+                     Number
+                     Number One :
+                     Number One : BAMBI
+                     Number One : BAMBI versus
+                     Number One : BAMBI versus GODZILLA
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+                                                            
+
+ ,| *./\|(/|/
+   /| |/`|',/| \|/
+ \/_,| /| /, /<|\\/\|/|\
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /   .:::. .  /
+  \___________/
+    |\      |\
+    | >     | \
+   / /      |  \
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /   .:::. .  /
+  \___________/
+    \|      |\
+     \      | \
+    / \    /  |
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /   .:::. .  /
+  \___________/
+    \\      \|
+     \\      \ 
+     | \     |\
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /   .:::. .  /
+  \___________/
+    \\      \|
+     >\      \
+    / |     /|
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    |\      |\
+    | >     | \
+   / /      |  \
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \|      |\
+     \      | \
+    / \    /  |
+          
+         
+--,_^_   
+.    .\  
+__--___o
+--_    
+.  \    
+__  \/|  
+|\(  .|
+| \\ /
+  | "
+--_    
+.  \    
+__  \/|  
+|\(  .|
+| \\ /
+  | "
+--_    
+.  \    
+__  \/|  
+|\(  .|
+| \\ /
+  | "
+--_    
+.  \    
+__  \/|  
+|\(  .|
+| \\ /
+  | "
+--,_^_  
+.    .\  
+__--___o
+|\        
+| \      
+  |      
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /     
+  \___________/     
+    \\      \|
+     \\      \ 
+     | \     |\
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     >\      \
+    / |     /|
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    |\      |\
+    | >     | \
+   / /      |  \
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \|      |\
+     \      | \
+    / \    /  |
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     \\      \ 
+     | \     |\
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     >\      \
+    / |     /|
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    |\      |\
+    | >     | \
+   / /      |  \
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \|      |\
+     \      | \
+    / \    /  |
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     \\      \ 
+     | \     |\
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     >\      \
+    / |     /|
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    |\      |\
+    | >     | \
+   / /      |  \
+        
+         
+--,_^_   
+.    .\  
+__--___o
+--_     
+.  \     
+__  \/|  
+|\(  .| 
+| \\ /
+|  \"
+--_      
+.  \     
+__  \/|   
+|\(  .|
+| \\ /
+|  \"
+--,_^_
+.    .\ 
+__--___o
+|\       
+| \      
+|  \     
+--,_^_
+.    .\ 
+__--___o
+|\       
+| \      
+|  \     
+--_      
+.  \     
+__  \/|   
+|\(  .|
+| \\ /
+|  \"
+--_      
+.  \     
+__  \/|   
+|\(  .|
+| \\ /
+|  \"
+--_      
+.  \     
+__  \/|   
+|\(  .|
+| \\ /
+|  \"
+--,_^_
+.    .\ 
+__--___o
+|\      
+| \     
+|  \    
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /    
+  \___________/     
+    \|      |\
+     \      | \
+    / \    /  |
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     \\      \ 
+     | \     |\
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     >\      \
+    / |     /|
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    |\      |\
+    | >     | \
+   / /      |  \
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \|      |\
+     \      | \
+    / \    /  |
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     \\      \ 
+     | \     |\
+              _^_
+ o           /  .\
+  \,--------;   __o
+  /  .:::.. .  /
+  \___________/
+    \\      \|
+     >\      \
+    / |     /|
+                     
+ o                  
+  \,----------,_^_   
+  /  .:::.. .    .\  
+  \___________--___o
+    \\      \|
+     >\      \
+    / |     /|
+                     
+ o          
+  \,----------_    
+  /  .:::.. .  \    
+  \___________  \/|  
+    \\      \|(  .|
+     >\      \ \ /
+    / |     /|  "
+
+`'     `.__________________________________/M
+( /   (/M
+(-.___)M
+/     \/)M
+_______.--'\M
+,____________/\M
+(           /   )M
+(            )  /M
+\           \    )M
+(                 )M
+(    (            /M
+\    (             )M
+(     \             )M
+(    (              /M
+
+\    (        )      )M
+
+(     (        /      )M
+
+(     \         )     /M
+
+\    (          )      )M
+
+(                )      )M
+
+(                )      /M
+
+\                /       )M
+
+(                  )      )
+  /  >      | \
+                             
+                             
+          T          T          T
+          T H          T H          T H
+          T H E          T H E          T H E           T H E 
+          T H E   E          T H E   E          T H E   E
+          T H E   E N          T H E   E N          T H E   E N
+          T H E   E N D          T H E   E N D
+         ===============
+ 
+[?25h
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/depricated_test_filedescriptor.py b/lldb/third_party/Python/module/pexpect-4.6/tests/depricated_test_filedescriptor.py
new file mode 100755
index 00000000000..6b0ef3e8cc8
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/depricated_test_filedescriptor.py
@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+import PexpectTestCase
+import os
+
+class ExpectTestCase(PexpectTestCase.PexpectTestCase):
+    def setUp(self):
+        print(self.id())
+        PexpectTestCase.PexpectTestCase.setUp(self)
+
+    def test_fd (self):
+        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+        s = pexpect.spawn (fd)
+        s.expect ('This is the end of test data:')
+        s.expect (pexpect.EOF)
+        assert s.before == ' END\n'
+
+    def test_maxread (self):
+        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+        s = pexpect.spawn (fd)
+        s.maxread = 100
+        s.expect('2')
+        s.expect ('This is the end of test data:')
+        s.expect (pexpect.EOF)
+        assert s.before == ' END\n'
+
+    def test_fd_isalive (self):
+        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+        s = pexpect.spawn (fd)
+        assert s.isalive()
+        os.close (fd)
+        assert not s.isalive()
+
+    def test_fd_isatty (self):
+        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+        s = pexpect.spawn (fd)
+        assert not s.isatty()
+        os.close(fd)
+
+###    def test_close_does_not_close_fd (self):
+###        '''Calling close() on a pexpect.spawn object should not
+###                close the underlying file descriptor.
+###        '''
+###        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+###        s = pexpect.spawn (fd)
+###        try:
+###            s.close()
+###            self.fail('Expected an Exception.')
+###        except pexpect.ExceptionPexpect, e:
+###            pass
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(ExpectTestCase, 'test')
+
+#fout = open('delete_me_1','wb')
+#fout.write(the_old_way)
+#fout.close
+#fout = open('delete_me_2', 'wb')
+#fout.write(the_new_way)
+#fout.close
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/echo_w_prompt.py b/lldb/third_party/Python/module/pexpect-4.6/tests/echo_w_prompt.py
new file mode 100644
index 00000000000..3c8055357df
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/echo_w_prompt.py
@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+from __future__ import print_function
+
+try:
+    raw_input
+except NameError:
+    raw_input = input
+
+while True:
+    try:
+        a = raw_input('<in >')
+    except EOFError:
+        print('<eof>')
+        break
+    print('<out>', a, sep='')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/echo_wait.py b/lldb/third_party/Python/module/pexpect-4.6/tests/echo_wait.py
new file mode 100755
index 00000000000..e15205925cf
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/echo_wait.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import time
+import termios
+import sys
+
+# a dumb PAM will print the password prompt first then set ECHO
+# False. What it should do it set ECHO False first then print the
+# prompt. Otherwise, if we see the password prompt and type out
+# password real fast before it turns off ECHO then some or all of
+# our password might be visibly echod back to us. Sounds unlikely?
+# It happens.
+
+print("fake password:")
+sys.stdout.flush()
+time.sleep(3)
+attr = termios.tcgetattr(sys.stdout)
+attr[3] = attr[3] & ~termios.ECHO
+termios.tcsetattr(sys.stdout, termios.TCSANOW, attr)
+time.sleep(12)
+attr[3] = attr[3] | termios.ECHO
+termios.tcsetattr(sys.stdout, termios.TCSANOW, attr)
+time.sleep(2)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/exit1.py b/lldb/third_party/Python/module/pexpect-4.6/tests/exit1.py
new file mode 100755
index 00000000000..587b8adde79
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/exit1.py
@@ -0,0 +1,24 @@
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import os, sys
+
+print("Hello")
+sys.stdout.flush()
+os._exit(1)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/exit667.c b/lldb/third_party/Python/module/pexpect-4.6/tests/exit667.c
new file mode 100644
index 00000000000..962b9fdb676
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/exit667.c
@@ -0,0 +1,26 @@
+/*
+    PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+*/
+
+#include <stdio.h>
+int main ()
+{
+    printf ("Hello world!\n");
+    exit(7);
+}
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/fakessh/ssh b/lldb/third_party/Python/module/pexpect-4.6/tests/fakessh/ssh
new file mode 100755
index 00000000000..d3259e4a252
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/fakessh/ssh
@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+from __future__ import print_function
+
+import getpass
+import sys
+PY3 = (sys.version_info[0] >= 3)
+if not PY3:
+    input = raw_input
+
+server = sys.argv[-1]
+if server == 'noserver':
+    print('No route to host')
+    sys.exit(1)
+
+print("Mock SSH client for tests. Do not enter real security info.")
+
+pw = getpass.getpass('password:')
+if pw != 's3cret':
+    print('Permission denied!')
+    sys.exit(1)
+
+prompt = "$"
+while True:
+    cmd = input(prompt)
+    if cmd.startswith('PS1='):
+        prompt = eval(cmd[4:]).replace('\$', '$')
+    elif cmd == 'ping':
+        print('pong')
+    elif cmd.startswith('ls'):
+        print('file1.py', 'file2.html', sep='\t')
+    elif cmd == 'echo $?':
+        print(0)
+    elif cmd in ('exit', 'logout'):
+        break
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/getch.py b/lldb/third_party/Python/module/pexpect-4.6/tests/getch.py
new file mode 100755
index 00000000000..a362e521d31
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/getch.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from __future__ import print_function
+import sys, tty, termios
+
+if hasattr(sys.stdin, 'buffer'):
+    # Python 3: we want to read raw bytes
+    stdin = sys.stdin.buffer
+else:
+    stdin = sys.stdin
+
+def main():
+    print('READY', end='\r\n')
+    while True:
+        try:
+            val = ord(stdin.read(1))
+        except KeyboardInterrupt:
+            val = 3
+        print('%d<STOP>' % (val,), end='\r\n')
+        if val == 0:
+            # StopIteration equivalent is ctrl+' ' (\x00, NUL)
+            break
+
+if __name__ == '__main__':
+    fd = sys.stdin.fileno()
+    old_settings = termios.tcgetattr(fd)
+    try:
+        tty.setraw(sys.stdin.fileno())
+        main()
+    finally:
+        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+    sys.stdout.flush()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/globe.vt b/lldb/third_party/Python/module/pexpect-4.6/tests/globe.vt
new file mode 100644
index 00000000000..85dc78d7729
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/globe.vt
@@ -0,0 +1,690 @@
+              _-o#&&*''''?d:>b\_
+          _o/"`''  '',, dMF9MMMMMHo_
+       .o&#'        `"MbHMMMMMMMMMMMHo.
+     .o"" '         vodM*$&&HMMMMMMMMMM?.
+    ,'              $M&ood,~'`(&##MMMMMMH\
+   /               ,MMMMMMM#b?#bobMMMMHMMML
+  &              ?MMMMMMMMMMMMMMMMM7MMM$R*Hk
+ ?$.            :MMMMMMMMMMMMMMMMMMM/HMMM|`*L
+|               |MMMMMMMMMMMMMMMMMMMMbMH'   T,
+$H#:            `*MMMMMMMMMMMMMMMMMMMMb#}'  `?
+]MMH#             ""*""""*#MMMMMMMMMMMMM'    -
+MMMMMb_                   |MMMMMMMMMMMP'     :
+HMMMMMMMHo                 `MMMMMMMMMT       .
+?MMMMMMMMP                  9MMMMMMMM}       -
+-?MMMMMMM                  |MMMMMMMMM?,d-    '
+ :|MMMMMM-                 `MMMMMMMT .M|.   :
+  .9MMM[                    &MMMMM*' `'    .
+   :9MMk                    `MMM#"        -
+     &M}                     `          .-
+      `&.                             .
+        `~,   .                     ./
+            . _                  .-
+              '`--._,dd###pp=""'
+              _v->#H#P? "':o<>\_
+          .,dP` `''  "'-o.+H6&MMMHo_
+        oHMH9'         `?&bHMHMMMMMMHo.
+      oMP"' '           ooMP*#&HMMMMMMM?.
+    ,M*          -     `*MSdob//`^&##MMMH\
+   d*'                .,MMMMMMH#o>#ooMMMMMb
+  HM-                :HMMMMMMMMMMMMMMM&HM[R\
+ d"Z\.               9MMMMMMMMMMMMMMMMM[HMM|:
+-H    -              MMMMMMMMMMMMMMMMMMMbMP' :
+:??Mb#               `9MMMMMMMMMMMMMMMMMMH#! .
+: MMMMH#,              "*""""`#HMMMMMMMMMMH  -
+||MMMMMM6\.                    {MMMMMMMMMH'  :
+:|MMMMMMMMMMHo                 `9MMMMMMMM'   .
+. HMMMMMMMMMMP'                 !MMMMMMMM    `
+- `#MMMMMMMMM                   HMMMMMMM*,/  :
+ :  ?MMMMMMMF                   HMMMMMM',P' :
+  .  HMMMMR'                    {MMMMP' ^' -
+   : `HMMMT                     iMMH'     .'
+    -.`HMH                               .
+      -:*H                            . '
+        -`\,,    .                  .-
+          ' .  _                 .-`
+              '`~\.__,obb#q==~'''
+              .ovr:HMM#?:`' >b\_
+          .,:&Hi' `'   "' \\|&bSMHo_
+        oHMMM#*}          `?&dMMMMMMHo.
+     .dMMMH"''''           ,oHH*&&9MMMM?.
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+   dHH?'                   :MMMMMM#bd#odMML
+  H' |\                  `dMMMMMMMMMMMMMM9Mk
+ JL/"7+,.                `MMMMMMMMMMMMMMMH9ML
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+:  \\#M#d?                `HMMMMMMMMMMMMMMMMH.
+.   JMMMMM##,              ``*""'"*#MMMMMMMMH
+-. ,MMMMMMMM6o_                    |MMMMMMMM':
+:  |MMMMMMMMMMMMMb\                 TMMMMMMT :
+.   ?MMMMMMMMMMMMM'                 :MMMMMM|.`
+-    ?HMMMMMMMMMM:                  HMMMMMM\|:
+ :     9MMMMMMMMH'                 `MMMMMP.P.
+  .    `MMMMMMT''                   HMMM*''-
+   -    TMMMMM'                     MM*'  -
+    '.   HMM#                            -
+      -. `9M:                          .'
+        -. `b,,    .                . '
+          '-\   .,               .-`
+              '-:b~\\_,oddq==--"
+              _oo##'9MMHb':'-,o_
+          .oH":HH$' ""'  "' -\7*R&o_
+       .oHMMMHMH#9:          "\bMMMMHo.
+      dMMMMMM*""'`'           .oHM"H9MM?.
+    ,MMMMMM'                   "HLbd<|?&H\
+   JMMH#H'                     |MMMMM#b>bHb
+  :MH  ."\                   `|MMMMMMMMMMMM&
+ .:M:d-"|:b..                 9MMMMMMMMMMMMM+
+:  "*H|      -                &MMMMMMMMMMMMMH:
+.    `LvdHH#d?                `?MMMMMMMMMMMMMb
+:      iMMMMMMH#b               `"*"'"#HMMMMMM
+.   . ,MMMMMMMMMMb\.                   {MMMMMH
+-     |MMMMMMMMMMMMMMHb,               `MMMMM|
+:      |MMMMMMMMMMMMMMH'                &MMMM,
+-       `#MMMMMMMMMMMM                 |MMMM6-
+ :        `MMMMMMMMMM+                 ]MMMT/
+  .       `MMMMMMMP"                   HMM*`
+   -       |MMMMMH'                   ,M#'-
+    '.     :MMMH|                       .-
+      .     |MM                        -
+       ` .   `#?..    .             ..'
+           -.     _.             .-
+              '-|.#qo__,,ob=~~-''
+              _ooppH[`MMMD::--\_
+          _oHMR":&M&. ""'  "'  /&\\_
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+      oHMMMMMMMM*""'``           .dMP#M?.
+    .dMMMMMMMM*                   `H\do?&\
+   -iMMMHH#H'                      &MMMHb#?
+  : ZMM'   7-.                   `{MMMMMMMMH
+ .  .M6_d|"`$|v..                 9MMMMMMMMML
+-    `'*H#       :                |MMMMMMMMMM:
+:        *\\dHM#dd.                ?MMMMMMMMMb
+-          |MMMMMMM##\              `"*""?HMMM
+:      .  |MMMMMMMMMMMo\.                 {MMM
+.         {MMMMMMMMMMMMMMMHo.             `MMM
+-          ?MMMMMMMMMMMMMMM*'             -MMP
+:           `#MMMMMMMMMMMMT               dMM'
+ -            |MMMMMMMMMMH'              -MMT
+  :           `MMMMMMMM"'                JMP
+   -           MMMMMMH'                 ,H?
+    '.         HMMM#'                    :
+      .        ?MM-                   . '
+        -.      *M:..               .-
+           - .      _.           .-
+              '-.~-dHb__\ov+~~-`
+              .oo>#&H6?*MMH:-.._
+          .oHMMMR:"&MZ\ `"'  "  |$-_
+       ..dMMMMMMMMdMMM#9\        `'HHo.
+     . ,dMMMMMMMMMMM"`' `           ?MP?.
+    . |MMMMMMMMMMM'                 `"$b&\
+   -  |MMMMHH##M'                     HMMH?
+  -   TTMM|    >..                   \MMMMMH
+ :     |MM\,#-""$~b\.                `MMMMMM+
+.       ``"H&#        -               &MMMMMM|
+:            *\v,#MHddc.              `9MMMMMb
+.               MMMMMMMM##\             `"":HM
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+:               `*HMMMMMMMMMMMM'            H'
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+          .\HMMMMMR?`\M6b."`' ''``v.
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+:                   !MMMMMMMH#b,          `""T
+.              .   ,MMMMMMMMMMMbo.           |
+:                  4MMMMMMMMMMMMMMMHo        |
+:                   ?MMMMMMMMMMMMMMM?        :
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+ :                     |MMMMMMMMMM?         .
+  -                    JMMMMMMMT'          :
+  `.                   MMMMMMH'           -
+    -.                |MMM#*`            -
+      .               HMH'            . '
+        -.            #H:.          .-
+          ` .           .\       .-
+              '-..-+oodHL_,--/-`
+              _,\?dZkMHF&$*q#b..
+          .//9MMMMMMM?:'HM\\"`-''`..
+       ..`  :MMMMMMMMMMHMMMMH?_    `-\
+     .     .dMMMMMMMMMMMMMM'"'"       `\.
+    .      |MMMMMMMMMMMMMR              \\
+   -        T9MMMMMHH##M"                `?
+  :          (9MMM'    !':.               &k
+ .:            HMM\_?p "":-b\.            `ML
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+:                     ?\,\dMH#b#.           9b
+:                        |MMMMMMM##,        `*
+:                   .   +MMMMMMMMMMMo_       -
+:                       HMMMMMMMMMMMMMM#,    :
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+  `.                       9MMMMM*'       -
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+      -                  |MM"          .'
+       `.                &M'..  .   ..'
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+              '-. -voboo#&:,-.-`
+              _oo:\bk99M[<$$+b\.
+           .$*"MMMMMMMM[:"\Mb\?^" .
+       . '`    HMMMMMMMMMMHMMMM+?.  `.
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+              _o,:o?\?dM&MHcc~,.
+          ..^':&#""HMMMMMMMM$:?&&?.
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+  `.             9MMH**#MMMMMH'           :
+    -.            '     "?##"      d     :
+      .                    '    ,/"    .'
+       `..                          ..'
+          `  .                   .-
+              '`"#HHMMMMM#<>..-`
+              _oo##bHMb&d#bd,>\_
+          .oHMMMMMMMMMMMMMM***9R"-..
+        oHMMMMMMMMMMMMMMMMMH\  ?   `-.
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+||,                     ,#dMM?.M?      .  .` -
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+    -.               `      "*#*'    ,:  .
+      .                       `   .v'' .'
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+          '- .                   .-
+              "`\+HHMMMMMMHr~.-`
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+        oHMMMMMMMMMMMMMMMMMMMM#v`?  `.
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+    .                    `      `#*'   ,:-
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+          .oHHMMMMMMMMMMMMMMMMMH*\,.
+        oHMMMMMMMMMMMMMMMMMMMMMMHb:'-.
+     .dMMMMMMMMMMMMMMMMMMMMMMMMMH|\/'  .
+    ,&HMMMMMMMMMMMMMMMMMMMMMMM/"&.,d.   -.
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+  9Mb `-                     1MMMMMMMMMM|  :
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+    -.                       `     |#"' ,'
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+        -.                          .-
+           - .                   . `
+              '-*#d#HHMMMMHH#"-'
+              _,<_:&S6dHHHb&bb\_
+          .odHMMMMMMMMMMMMMMMMMMM}-_
+       .oHMMMMMMMMMMMMMMMMMMMMMMMM#d:.
+      ?9MMMMMMMMMMMMMMMMMMMMMMMMMMMH-$ .
+    ,::dHMMMMMMMMMMMMMMMMMMMMMMMMH:\.?? -.
+   dMdboHMMHMMMMMMMMMMMMMMMMMMMMMMH, '    .
+  HMMMM7MMMb$R***MMMMMMMMMMMMMMMMMH\ -     .
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+ :?MMM6  M|  .                   .,oHMMMMM| /
+  .?MMM- `'                      &MMMMMMMM|.
+   -`HM-                         HMH#*MMM?:
+    '.                           '   `#*:`
+      -                              -'/
+       ` .                          . '
+          ` .                    . `
+              '--##HH#HMMMHH#""`
+              _o,d_?dZdoHHHb#b\_
+          .vdMMMMMMMMMMMMMMMMMMMMH\.
+       .,HHMMMMMMMMMMMMMMMMMMMMMMMMH&,.
+      /?RMMMMMMMMMMMMMMMMMMMMMMMMMMMMH|..
+    ,\?>`T#RMMMMMMMMMMMMMMMMMMMMMMMM6`\|/
+   dMMbd#ooHMMMHMMMMMMMMMMMMMMMMMMMMMH,`' '
+  HMMMMMMMTMMMMb$ZP**HMMMMMMMMMMMMMMMM|.   :
+ dMMMMMMMM}$MMMMMH'   `HMMMH?"`MMMM?T' .    :
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+1MMMMMMMMMMMb#/         ?#?      |`#"  -T:   :
+*'HMMMMMMMMMM*'           "     ~?&  .?} ' ' .
+- 4MMMMMMMMP"                    `M? HMTc:\\.:
+: `MMMMMMM[                       "#:::`>`"?M{
+.  |MMMMMMH.                        ``'``'_`:-
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+ :  *MMMMM: iM|  .                   _oHMMMM:
+  .  ?MMMM'  "'                     ,MMMMMMP
+   :  `HMH                          JM#*MMT
+    -.  '                           `   #'
+      .                                /
+        -.            -              .'
+           -.                    . `
+              '--=&&MH##HMHH#"""
+              .-:?,Z?:&$dHH##b\_
+           ,:bqRMMMMMMMMMMMMMMMMMHo.
+        .?HHHMMMMMMMMMMMMMMMMMMMMMMMHo.
+      -o/*M9MMMMMMMMMMMMMMMMMMMMMMMMMMMv
+    .:H\b\'|?#HHMMMMMMMMMMMMMMMMMMMMMM6?Z\
+   .?MMMHbdbbodMMMMHMMMMMMMMMMMMMMMMMMMM\':
+  :MMMMMMMMMMM7MMMMb?6P**#MMMMMMMMMMMMMMM_ :
+ \MMMMMMMMMMMMb^MMMMMM?   `*MMMM*"`MMMR<' . -
+.1MMMMMMMMMMMMMb]M#""       9MR'   `?MMb  \. :
+-MMMMMMMMMMMMMMMH##|`        *&.     |`*' .\ .
+-?""*MMMMMMMMMMMMM'            '    |?b  ,}" :
+:    MMMMMMMMMMH'                    `M_|M}r\?
+.    `MMMMMMMMM'                      `$_:`'"H
+-     TMMMMMMMM,                        '"``::
+:     {MMMMMMMM| oH|                      .#M-
+ :    `9MMMMMM' .MP   .                 ,oMMT
+  .     HMMMMP'  `'                    ,MMMP
+   -     `MMH'                         HH9*
+    '.    `                           ` .'
+      -                               . '
+       ` .               -          .-
+          ` .                    .-
+              ' -==pHMMH##HH#"""
+              _..-:b&::&?&&##bo_
+          ...?-#&9MMMMMMMMMMMMMMMHo_
+       .. .1&#MMHMMMMMMMMMMMMMMMMMMMHo.
+     .  .o/##R9MMMMMMMMMMMMMMMMMMMMMMMM?.
+    .- |MSd?|'`$?#HMMMMMMMMMMMMMMMMMMMMMH\
+   -  dMMMMHbd##oodMMMM#MMMMMMMMMMMMMMMMMH:
+  - JMMMMMMMMMMMMM7HMMMH$SR***MMMMMMMMMMMMb>
+ : {MMMMMMMMMMMMMMM`9MMMMMH'  ``HMMM?"*MM[| :
+- |MMMMMMMMMMMMMMMMM<MH*''      `MM'   'HM? |.
+: `MMMMMMMMMMMMMMMMMM##H-'       `#,  ` |`? /|
+.  ?"""?HMMMMMMMMMMMMMH'           "    v& .}?
+-       |MMMMMMMMMMMP'                  `H:&H&
+i       `9MMMMMMMMMT                     `|?"?
+:         MMMMMMMMMH                       "`\
+:         MMMMMMMMMH-.dH                    ,|
+ :        ?MMMMMMM?  {M' .                .dT
+  .        ?MMMMMR'  `'                  ,MP
+   -        `HMM#'                      .&*
+    '.        '                         `.
+      -                               . '
+       `..                          .-
+           -.                    .-
+              '-.==p##HMMHp&#"""
+              _v---:?&?:?&?&#b\_
+          ..' i: #M$MMMMMMMMMMMMMHo_
+       ..   -]M#HMHMMMMMMMMMMMMMMMMMHo.
+     .     ooP*&6&MMMMMMMMMMMMMMMMMMMMM?.
+    . -   &Rbbd-/`?:##HMMMMMMMMMMMMMMMMMH?
+   -    ,HMMMMM#od#boodMMMMHMMMMMMMMMMMMMMb
+  -   iMMMMMMMMMMMMMMM[*MMMH&$R***MMMMMMMMMb
+ :   |MMMMMMMMMMMMMMMMML"MMMMMM'  ``MMMP"HMM:
+.    HMMMMMMMMMMMMMMMMMMb/MH""      `MR   *M,|
+:    TMMMMMMMMMMMMMMMMMMMMd#&`       `D.   ?|\
+.     `*"'"*HMMMMMMMMMMMMMMP'          '  -d,J
+:           |MMMMMMMMMMMMP'                ||M
+M,           ?MMMMMMMMMM|                  `\?
+&|            HMMMMMMMMM}                   ``
+`L           .MMMMMMMMMMP ,d|                :
+ *.           ?MMMMMMMF' .MP                /
+  |            TMMMMMM'  `"'               /
+  `.            `MMMP'                   ./
+    -.           `                       .
+      .                               . '
+        - .                         .-
+           -\                   ..-
+              '-..=p####HMH&="""
+              _vo~^'':&b::d,#b\_
+          ..`" `:v +9P]MMMMMMMMMMHo_
+        ,-     ?Mb#MMMMMMMMMMMMMMMMMHo.
+     . "     ,ooM*&&&HMMMMMMMMMMMMMMMMHb.
+    .   -    99Soo?|'`*?##HMMMMMMMMMMMMMH\
+   -       .HMMMMMM#od#boodMMMMHMMMMMMMMMMb
+  -      :MMMMMMMMMMMMMMMM67HMMH&$R**HMMMMMb
+ :      .MMMMMMMMMMMMMMMMMMM/HMMMMM|  `9MM'HL
+:       {MMMMMMMMMMMMMMMMMMMM\MM*''    `H[ `9|
+|       `HMMMMMMMMMMMMMMMMMMMMb##|      `F. :?
+H        `"*"'"`#MMMMMMMMMMMMMMM?         '  k
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+MMH.             `HMMMMMMMMMM:               |
+&MM|              `MMMMMMMMMM,               -
+`MM|              dMMMMMMMMMM|.oH            :
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+  Hi               |MMMMMMP   "'           .'
+   T.               `MMM#'                -
+    `.               `                  .`
+     `                                 -
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+           ...                   .-
+              '-. //######M#b~""
+              _ooq=""''$b$_&?b\_
+          .-`^"  "'o |&M:MMMMMMMMHo_
+        o/'      -$Mb#MMMMMMMMMMMMMMHo.
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+    .'          `MRbod?|'`+?##9MMMMMMMMMH\
+  .`          .,MMMMMMH#od##obdMMMMHMMMMMMb
+  -          ?MMMMMMMMMMMMMMMMM$HMMH$ZP*HMMb
+ ?          |MMMMMMMMMMMMMMMMMMM|9MMMMP  "M6\
+.-          dMMMMMMMMMMMMMMMMMMMMb]M*'    |R |
+1|          `HMMMMMMMMMMMMMMMMMMMMMd#|     ?,:
+MH,          ``*""'"*#MMMMMMMMMMMMMM*       '`
+MM6_                 |MMMMMMMMMMMMH"         :
+MMMMMb.               "MMMMMMMMMMT           -
+&MMMMM'                |MMMMMMMMMH           `
+!MMMMb                .HMMMMMMMMM+.?&        :
+ TMMMM                 *MMMMMMMP  dH' .     :
+  9MM'                 `MMMMMMP'  "'       .
+   9ML                  `MMM#'            -
+    `H                   `               :
+     `\.                               .'
+       `-\  .                       .-
+          ' ._                   .-`
+              '-\. ,b#####p&**^`
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/interact.py b/lldb/third_party/Python/module/pexpect-4.6/tests/interact.py
new file mode 100755
index 00000000000..a839e9502f9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/interact.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+try:
+    # This allows coverage to measure code run in this process
+    import coverage
+    coverage.process_startup()
+except ImportError:
+    pass
+
+from utils import no_coverage_env
+import pexpect
+import sys
+
+
+def main():
+    p = pexpect.spawn('{sys.executable} getch.py'.format(sys=sys),
+                      env=no_coverage_env())
+
+    # defaults matches api
+    escape_character = chr(29)
+    encoding = None
+
+    if len(sys.argv) > 1 and '--no-escape' in sys.argv:
+        escape_character = None
+
+    if len(sys.argv) > 1 and '--utf8' in sys.argv:
+        encoding = 'utf8'
+
+    p.interact(escape_character=escape_character)
+
+    print("Escaped interact")
+
+if __name__ == '__main__':
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/list100.py b/lldb/third_party/Python/module/pexpect-4.6/tests/list100.py
new file mode 100644
index 00000000000..3b2b6ec3581
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/list100.py
@@ -0,0 +1,2 @@
+# -*- coding: utf-8 -*-
+print(list(range(100)))
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/needs_kill.py b/lldb/third_party/Python/module/pexpect-4.6/tests/needs_kill.py
new file mode 100755
index 00000000000..810236bdad6
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/needs_kill.py
@@ -0,0 +1,13 @@
+#!/usr/bin/env python
+"""This script can only be killed by SIGKILL."""
+import signal, time
+
+# Ignore interrupt, hangup and continue signals - only SIGKILL will work
+signal.signal(signal.SIGINT, signal.SIG_IGN)
+signal.signal(signal.SIGHUP, signal.SIG_IGN)
+signal.signal(signal.SIGCONT, signal.SIG_IGN)
+
+print('READY')
+while True:
+    time.sleep(10)
+    
\ No newline at end of file
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/pexpectTest.py b/lldb/third_party/Python/module/pexpect-4.6/tests/pexpectTest.py
new file mode 100755
index 00000000000..6839a2f7053
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/pexpectTest.py
@@ -0,0 +1,69 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+import time
+import pexpect
+import sys
+
+def getProcessResults(cmd, timeLimit=20):
+  '''
+  executes 'cmd' as a child process and returns the child's output,
+  the duration of execution, and the process exit status. Aborts if
+  child process does not generate output for 'timeLimit' seconds.
+  '''
+  output = ""
+  startTime = time.time()
+  child = pexpect.spawn(cmd, timeout=10)
+  child.logfile = sys.stdout
+
+  while 1:
+    try:
+      # read_nonblocking will add to 'outout' one byte at a time
+      # newlines can show up as '\r\n' so we kill any '\r's which
+      # will mess up the formatting for the viewer
+      output += child.read_nonblocking(timeout=timeLimit).replace("\r","")
+    except pexpect.EOF as e:
+      print(str(e))
+      # process terminated normally
+      break
+    except pexpect.TIMEOUT as e:
+      print(str(e))
+      output += "\nProcess aborted by FlashTest after %s seconds.\n" % timeLimit
+      print(child.isalive())
+      child.kill(9)
+      break
+
+  endTime = time.time()
+  child.close(force=True)
+
+  duration = endTime - startTime
+  exitStatus = child.exitstatus
+
+  return (output, duration, exitStatus)
+
+cmd = "./ticker.py"
+
+result, duration, exitStatus = getProcessResults(cmd)
+
+print("result: %s" % result)
+print("duration: %s" % duration)
+print("exit-status: %s" % exitStatus)
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/CSIGNALTEST/test.c b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/CSIGNALTEST/test.c
new file mode 100644
index 00000000000..86bcc17fab5
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/CSIGNALTEST/test.c
@@ -0,0 +1,90 @@
+/* I built this with "gcc -lutil test.c -otest" */
+#include <sys/types.h>  /* include this before any other sys headers */
+#include <sys/wait.h>   /* header for waitpid() and various macros */
+#include <signal.h>     /* header for signal functions */
+#include <stdio.h>      /* header for fprintf() */
+#include <unistd.h>     /* header for fork() */
+#ifdef LINUX
+#include <pty.h>
+#else
+#include <util.h>	/* header for forkpty, compile with -lutil */
+#endif
+
+void sig_chld(int);  /* prototype for our SIGCHLD handler */
+
+int main() 
+{
+    struct sigaction act;
+    int pid;
+    int fdm;
+    char slave_name [20];
+
+
+    /* Assign sig_chld as our SIGCHLD handler.
+       We don't want to block any other signals in this example 
+       We're only interested in children that have terminated, not ones
+       which have been stopped (eg user pressing control-Z at terminal).
+       Finally, make these values effective. If we were writing a real 
+       application, we would save the old value instead of passing NULL.
+     */
+    act.sa_handler = sig_chld;
+    sigemptyset(&act.sa_mask);
+    act.sa_flags = SA_NOCLDSTOP;
+    if (sigaction(SIGCHLD, &act, NULL) < 0) 
+    {
+        fprintf(stderr, "sigaction failed\n");
+        return 1;
+    }
+
+    /* Do the Fork thing. 
+    */
+    pid = forkpty (&fdm, slave_name, NULL, NULL);
+    /* pid = fork(); */
+
+    switch (pid)
+    {
+	    case -1:
+		fprintf(stderr, "fork failed\n");
+		return 1;
+	    break;
+
+	    case 0: /* Child process. */     
+		printf ("This child output will cause trouble.\n");
+		_exit(7);
+	    break;
+
+	    default: /* Parent process. */
+		sleep(1);
+		printf ("Child pid: %d\n", pid); 
+		sleep(10);  /* let child finish -- crappy way to avoid race. */
+	    break;
+    }
+
+    return 0;
+}
+ 
+void sig_chld(int signo) 
+{
+    int status, wpid, child_val;
+
+    printf ("In sig_chld signal handler.\n");
+
+    /* Wait for any child without blocking */
+    wpid = waitpid (-1, & status, WNOHANG);
+    printf ("\tWaitpid found status for pid: %d\n", wpid);
+    if (wpid < 0)
+    {
+        fprintf(stderr, "\twaitpid failed\n");
+        return;
+    }
+    printf("\tWaitpid status: %d\n", status);
+
+    if (WIFEXITED(status)) /* did child exit normally? */
+    {
+        child_val = WEXITSTATUS(status); 
+        printf("\tchild exited normally with status %d\n", child_val);
+    }
+    printf ("End of sig_chld.\n");
+}
+
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/README b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/README
new file mode 100644
index 00000000000..d50f94cd620
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/README
@@ -0,0 +1,2 @@
+These scripts are for checking how the underlying system behaves, not for
+testing Pexpect itself.
\ No newline at end of file
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check.py b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check.py
new file mode 100755
index 00000000000..b41755a9635
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+import signal
+import os
+import time
+import pty
+
+def signal_handler (signum, frame):
+    print 'Signal handler called with signal:', signum
+    print 'signal.SIGCHLD=', signal.SIGKILL
+
+# First thing we do is set up a handler for SIGCHLD.
+signal.signal (signal.SIGCHLD, signal.SIG_IGN)
+
+print 'PART 1 -- Test signal handling with empty pipe.'
+# Create a child process for us to kill.
+try:
+    pid, fd = pty.fork()
+except Exception as e:
+    print str(e)
+
+if pid == 0:
+#    os.write (sys.stdout.fileno(), 'This is a test.\n This is a test.')
+    time.sleep(10000)
+
+print 'Sending SIGKILL to child pid:', pid
+os.kill (pid, signal.SIGKILL)
+
+# SIGCHLD should interrupt sleep.
+# Note that this is a race.
+# It is possible that the signal handler will get called
+# before we try to sleep, but this has not happened yet.
+# But in that case we can only tell by order of printed output.
+print 'Entering sleep...'
+try:
+    time.sleep(10)
+except:
+    print 'sleep was interrupted by signal.'
+
+# Just for fun let's see if the process is alive.
+try:
+    os.kill(pid, 0)
+    print 'Child is alive. This is ambiguous because it may be a Zombie.'
+except OSError as e:
+    print 'Child appears to be dead.'
+
+print 'PART 2 -- Test signal handling with full pipe.'
+# Create a child process for us to kill.
+try:
+    pid, fd = pty.fork()
+except Exception as e:
+    print str(e)
+
+if pid == 0:
+    os.write (sys.stdout.fileno(), 'This is a test.\n This is a test.')
+    time.sleep(10000)
+
+print 'Sending SIGKILL to child pid:', pid
+os.kill (pid, signal.SIGKILL)
+
+# SIGCHLD should interrupt sleep.
+# Note that this is a race.
+# It is possible that the signal handler will get called
+# before we try to sleep, but this has not happened yet.
+# But in that case we can only tell by order of printed output.
+print 'Entering sleep...'
+try:
+    time.sleep(10)
+except:
+    print 'sleep was interrupted by signal.'
+
+# Just for fun let's see if the process is alive.
+try:
+    os.kill(pid, 0)
+    print 'Child is alive. This is ambiguous because it may be a Zombie.'
+except OSError as e:
+    print 'Child appears to be dead.'
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check2.py b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check2.py
new file mode 100755
index 00000000000..0a7d5f89ca8
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check2.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+import signal
+import os
+import time
+
+def signal_handler (signum, frame):
+	print 'Signal handler called with signal:', signum
+	print 'signal.SIGCHLD=', signal.SIGKILL
+
+# Create a child process for us to kill.
+pid = os.fork()
+if pid == 0:
+	time.sleep(10000)
+
+#signal.signal (signal.SIGCHLD, signal.SIG_IGN)
+signal.signal (signal.SIGCHLD, signal_handler)
+
+print 'Sending SIGKILL to child pid:', pid
+os.kill (pid, signal.SIGKILL)
+
+# SIGCHLD should interrupt sleep.
+# Note that this is a race.
+# It is possible that the signal handler will get called
+# before we try to sleep, but this has not happened yet.
+# But in that case we can only tell by order of printed output.
+interrupted = 0
+try:
+	time.sleep(10)
+except:
+	print 'sleep was interrupted by signal.'
+	interrupted = 1
+
+if not interrupted:
+	print 'ERROR. Signal did not interrupt sleep.'
+else:
+	print 'Signal interrupted sleep. This is good.'
+
+# Let's see if the process is alive.
+try:
+	os.kill(pid, 0)
+	print 'Child is alive. This is ambiguous because it may be a Zombie.'
+except OSError as e:
+	print 'Child appears to be dead.'
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_control_terminal.py b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_control_terminal.py
new file mode 100755
index 00000000000..9598fd7ca6b
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_control_terminal.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+
+import termios, fcntl, struct, os, sys
+
+def getwinsize():	
+	s = struct.pack("HHHH", 0, 0, 0, 0)
+	x = fcntl.ioctl(sys.stdout.fileno(), termios.TIOCGWINSZ, s)
+	rows, cols = struct.unpack("HHHH", x)[:2]
+	return rows, cols
+
+def setwinsize(r,c):
+	# Assume ws_xpixel and ws_ypixel are zero.
+	s = struct.pack("HHHH", r,c,0,0)
+	x = fcntl.ioctl(sys.stdout.fileno(), termios.TIOCSWINSZ, s)
+print 'stdin tty:', os.ttyname(0)
+print 'stdout tty:', os.ttyname(1)
+print 'controlling terminal:', os.ctermid() 
+print 'winsize %d,%d' % getwinsize()
+print 'ENDTEST'
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_handler.py b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_handler.py
new file mode 100755
index 00000000000..c0633eb80e0
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_handler.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+import signal
+import os
+import time
+import pty
+import sys
+import fcntl
+import tty
+GLOBAL_SIGCHLD_RECEIVED = 0
+                                                                                 
+def nonblock (fd):                                                           
+	# if O_NDELAY is set read() returns 0 (ambiguous with EOF).
+	# if O_NONBLOCK is set read() returns -1 and sets errno to EAGAIN
+	original_flags = fcntl.fcntl (fd, fcntl.F_GETFL, 0)
+	flags = original_flags | os.O_NONBLOCK
+	fcntl.fcntl(fd, fcntl.F_SETFL, flags)
+	return original_flags
+
+def signal_handler (signum, frame):
+	print '<HANDLER>'
+	global GLOBAL_SIGCHLD_RECEIVED
+	status = os.waitpid (-1, os.WNOHANG)
+	if status[0] == 0:
+		print 'No process for waitpid:', status
+	else:
+		print 'Status:', status
+	print 'WIFEXITED(status):', os.WIFEXITED(status[1])
+	print 'WEXITSTATUS(status):', os.WEXITSTATUS(status[1]) 
+	GLOBAL_SIGCHLD_RECEIVED = 1
+
+def main ():
+	signal.signal (signal.SIGCHLD, signal_handler)
+	pid, fd = pty.fork()
+	if pid == 0:
+		os.write (sys.stdout.fileno(), 'This is a test.\nThis is a test.')
+		time.sleep(10000)
+	nonblock (fd)
+	tty.setraw(fd) #STDIN_FILENO)
+	print 'Sending SIGKILL to child pid:', pid
+	time.sleep(2)
+	os.kill (pid, signal.SIGKILL)
+
+	print 'Entering to sleep...'
+	try:
+		time.sleep(2)
+	except:
+		print 'Sleep interrupted'
+	try:
+		os.kill(pid, 0)
+		print '\tChild is alive. This is ambiguous because it may be a Zombie.'
+	except OSError as e:
+		print '\tChild appears to be dead.'
+#		print str(e)
+	print
+	print 'Reading from master fd:', os.read (fd, 1000)
+
+
+
+if __name__ == '__main__':
+	main ()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_read.py b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_read.py
new file mode 100755
index 00000000000..9598aa765eb
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_read.py
@@ -0,0 +1,35 @@
+import os
+
+filename = os.tmpnam()
+print 'filename:', filename
+
+fd_out = os.open(filename, os.O_CREAT | os.O_WRONLY)
+print 'fd_out:', fd_out
+os.write (fd_out, 'This is a test.\n')
+os.close(fd_out)
+print
+print 'testing read on good fd...'
+fd_in = os.open (filename, os.O_RDONLY)
+print 'fd_in:', fd_in
+while 1:
+	data_in = os.read(fd_in, 1)
+	print 'data_in:', data_in
+	if data_in == '':
+		print 'data_in was empty'
+		break #sys.exit(1)
+os.close(fd_in)
+print
+print
+print 'testing read on closed fd...'
+fd_in = os.open ('test_read.py', os.O_RDONLY)
+print 'fd_in:', fd_in
+while 1:
+	data_in = os.read(fd_in, 1)
+	print 'data_in:', data_in
+	if data_in == '':
+		print 'data_in was empty'
+		break
+os.close(fd_in)
+d = os.read(fd_in, 1) # fd_in should be closed now...
+if s == '':
+	print 'd is empty. good.'
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_signals.py b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_signals.py
new file mode 100755
index 00000000000..d45bc8a3bd4
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/platform_checks/check_signals.py
@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+import signal
+import os
+import time
+import pty
+import sys
+GLOBAL_SIGCHLD_RECEIVED = 0
+
+def signal_handler (signum, frame):
+    print '<HANDLER>'
+    global GLOBAL_SIGCHLD_RECEIVED
+    status = os.waitpid (-1, os.WNOHANG)
+    print 'WIFEXITED(status):', os.WIFEXITED(status)
+    print 'WEXITSTATUS(status):', os.WEXITSTATUS(status) 
+    GLOBAL_SIGCHLD_RECEIVED = 1
+
+def main ():
+#	sig_test ('SIG_IGN', 'ptyfork', 'yes')
+	sig_test ('handler', 'ptyfork', 'yes')
+#	sig_test ('SIG_IGN', 'ptyfork', 'no')
+#	sig_test ('handler', 'ptyfork', 'no')
+#	sig_test ('SIG_IGN', 'osfork', 'yes')
+#	sig_test ('handler', 'osfork', 'yes')
+#	sig_test ('SIG_IGN', 'osfork', 'no')
+#	sig_test ('handler', 'osfork', 'no')
+
+def sig_test (sig_handler_type, fork_type, child_output):
+	print 'Testing with:'
+	print '\tsig_handler_type:', sig_handler_type
+	print '\tfork_type:', fork_type
+	print '\tchild_output:', child_output
+
+	if sig_handler_type == 'SIG_IGN':
+		signal.signal (signal.SIGCHLD, signal.SIG_IGN)
+	else:
+		signal.signal (signal.SIGCHLD, signal_handler)
+	pid = -1
+	fd = -1
+	if fork_type == 'ptyfork':
+		pid, fd = pty.fork()
+	else:
+		pid = os.fork()
+
+	if pid == 0:
+		if child_output == 'yes':
+			os.write (sys.stdout.fileno(), 'This is a test.\nThis is a test.')
+		time.sleep(10000)
+
+	#print 'Sending SIGKILL to child pid:', pid
+	time.sleep(2)
+	os.kill (pid, signal.SIGKILL)
+
+	#print 'Entering to sleep...'
+	try:
+		time.sleep(2)
+	except:
+		pass
+	try:
+		os.kill(pid, 0)
+		print '\tChild is alive. This is ambiguous because it may be a Zombie.'
+	except OSError as e:
+		print '\tChild appears to be dead.'
+#		print str(e)
+	print
+
+if __name__ == '__main__':
+	main ()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/qa.py b/lldb/third_party/Python/module/pexpect-4.6/tests/qa.py
new file mode 100755
index 00000000000..f50e3ed7726
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/qa.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import commands
+import signal
+
+signal.signal(signal.SIGCHLD, signal.SIG_IGN)
+print(commands.getoutput('/bin/ls -l'))
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/sigwinch_report.py b/lldb/third_party/Python/module/pexpect-4.6/tests/sigwinch_report.py
new file mode 100755
index 00000000000..f10956ab1c9
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/sigwinch_report.py
@@ -0,0 +1,50 @@
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from  __future__ import print_function
+
+import signal, time, struct, fcntl, termios, sys
+
+def getwinsize():
+    '''This returns the window size of the child tty.
+    The return value is a tuple of (rows, cols).
+    '''
+    if 'TIOCGWINSZ' in dir(termios):
+        TIOCGWINSZ = termios.TIOCGWINSZ
+    else:
+        TIOCGWINSZ = 1074295912 # Assume
+    s = struct.pack('HHHH', 0, 0, 0, 0)
+    x = fcntl.ioctl(sys.stdout.fileno(), TIOCGWINSZ, s)
+    return struct.unpack('HHHH', x)[0:2]
+
+def handler(signum, frame):
+    print('signal')
+    sys.stdout.flush()
+    print('SIGWINCH:', getwinsize ())
+    sys.stdout.flush()
+
+print("Initial Size:", getwinsize())
+print("setting handler for SIGWINCH")
+signal.signal(signal.SIGWINCH, handler)
+print("READY")
+
+while 1:
+    sys.stdout.flush()
+    time.sleep(1)
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/sleep_for.py b/lldb/third_party/Python/module/pexpect-4.6/tests/sleep_for.py
new file mode 100755
index 00000000000..902710576be
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/sleep_for.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from  __future__ import print_function
+
+import time
+import sys
+
+def main():
+    """
+        This script sleeps for the number of seconds (float) specified by the
+        command line argument.
+    """
+    if len(sys.argv) < 2:
+        print("Usage: %s seconds_to_sleep" % (sys.argv[0],))
+        sys.exit(1)
+    timeout = float(sys.argv[1])
+    print("READY")
+    time.sleep(timeout)
+    print("END")
+
+if __name__ == '__main__':
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/swapcase_echo.py b/lldb/third_party/Python/module/pexpect-4.6/tests/swapcase_echo.py
new file mode 100755
index 00000000000..aaac442dbaf
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/swapcase_echo.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import sys, time
+while True:
+    x = raw_input ()
+    time.sleep(1) # without this delay the test would fail about 75% of the time. Why?
+    print(x.swapcase())
+    sys.stdout.flush()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_FSM.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_FSM.py
new file mode 100644
index 00000000000..3425fd2110e
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_FSM.py
@@ -0,0 +1,34 @@
+import io
+import sys
+import unittest
+try:
+    import builtins
+except ImportError:
+    import __builtin__ as builtins
+
+PY3 = (sys.version_info[0] >= 3)
+input_name = 'input' if PY3 else 'raw_input'
+
+from pexpect import FSM
+
+class FSMTestCase(unittest.TestCase):
+    def test_run_fsm(self):
+        def _input(prompt):
+            return "167 3 2 2 * * * 1 - ="
+        orig_input = getattr(builtins, input_name)
+        orig_stdout = sys.stdout
+        setattr(builtins, input_name, _input)
+        sys.stdout = sio = (io.StringIO if PY3 else io.BytesIO)()
+        
+        try:
+            FSM.main()
+        finally:
+            setattr(builtins, input_name, orig_input)
+            sys.stdout = orig_stdout
+        
+        printed = sio.getvalue()
+        assert '2003' in printed, printed
+        
+        
+if __name__ == '__main__':
+    unittest.main()
\ No newline at end of file
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_ansi.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_ansi.py
new file mode 100755
index 00000000000..a9d445ed7de
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_ansi.py
@@ -0,0 +1,228 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from pexpect import ANSI
+import unittest
+from . import PexpectTestCase
+import sys
+
+PY3 = (sys.version_info[0] >= 3)
+
+write_target = 'I\'ve got a ferret sticking up my nose.                           \n' +\
+'(He\'s got a ferret sticking up his nose.)                        \n' +\
+'How it got there I can\'t tell                                    \n' +\
+'But now it\'s there it hurts like hell                            \n' +\
+'And what is more it radically affects my sense of smell.         \n' +\
+'(His sense of smell.)                                            '
+
+write_text = 'I\'ve got a ferret sticking up my nose.\n' + \
+'(He\'s got a ferret sticking up his nose.)\n' + \
+'How it got there I can\'t tell\n' + \
+'But now it\'s there it hurts like hell\n' + \
+'And what is more it radically affects my sense of smell.\n' + \
+'(His sense of smell.)\n' + \
+'I can see a bare-bottomed mandril.\n' + \
+'(Slyly eyeing his other nostril.)\n' + \
+'If it jumps inside there too I really don\'t know what to do\n' + \
+'I\'ll be the proud posessor of a kind of nasal zoo.\n' + \
+'(A nasal zoo.)\n' + \
+'I\'ve got a ferret sticking up my nose.\n' + \
+'(And what is worst of all it constantly explodes.)\n' + \
+'"Ferrets don\'t explode," you say\n' + \
+'But it happened nine times yesterday\n' + \
+'And I should know for each time I was standing in the way.\n' + \
+'I\'ve got a ferret sticking up my nose.\n' + \
+'(He\'s got a ferret sticking up his nose.)\n' + \
+'How it got there I can\'t tell\n' + \
+'But now it\'s there it hurts like hell\n' + \
+'And what is more it radically affects my sense of smell.\n' + \
+'(His sense of smell.)'
+
+tetris_target='                           XX            XXXX    XX                             \n' +\
+'                           XXXXXX    XXXXXXXX    XX                             \n' +\
+'                           XXXXXX    XXXXXXXX    XX                             \n' +\
+'                           XX  XX    XX  XXXX    XX                             \n' +\
+'                           XXXXXX  XXXX  XXXX    XX                             \n' +\
+'                           XXXXXXXXXX    XXXX    XX                             \n' +\
+'                           XX  XXXXXX      XX    XX                             \n' +\
+'                           XXXXXX          XX    XX                             \n' +\
+'                           XXXX    XXXXXX  XX    XX                             \n' +\
+'                           XXXXXX    XXXX  XX    XX                             \n' +\
+'                           XX  XX    XXXX  XX    XX                             \n' +\
+'                           XX  XX      XX  XX    XX                             \n' +\
+'                           XX  XX    XXXX  XXXX  XX                             \n' +\
+'                           XXXXXXXX  XXXX  XXXX  XX                             \n' +\
+'                           XXXXXXXXXXXXXX  XXXXXXXX                             \n' +\
+'                           XX    XXXXXXXX  XX    XX                             \n' +\
+'                           XXXXXXXXXXXXXX  XX    XX                             \n' +\
+'                           XX  XXXX    XXXXXX    XX                             \n' +\
+'                           XXXXXX          XXXXXXXX                             \n' +\
+'                           XXXXXXXXXX      XX    XX                             \n' +\
+'                           XXXXXXXXXXXXXXXXXXXXXXXX                             \n' +\
+'                                                                                \n' +\
+'  J->LEFT  K->ROTATE  L->RIGHT  SPACE->DROP  P->PAUSE  Q->QUIT                  \n' +\
+'                                                                                '
+
+torture_target='+--------------------------------------------------------------------------------+\n' +\
+'|a`opqrs`      This is the       `srqpo`a                                        |\n' +\
+'|VT100 series Torture Test Demonstration.                                        |\n' +\
+'|VT100 series Torture Test Demonstration.                                        |\n' +\
+'|This is a normal line __________________________________________________y_      |\n' +\
+'|This is a bold line (normal unless the Advanced Video Option is installed)      |\n' +\
+'|This line is underlined _ "       "       "       "       "       "    _y_      |\n' +\
+'|This is a blinking line _ "       "       "       "       "       "    _y_      |\n' +\
+'|This is inverse video _ (underlined if no AVO and cursor is underline) _y_      |\n' +\
+'|Normal gjpqy Underline   Blink   Underline+Blink gjpqy                          |\n' +\
+'|Bold   gjpqy Underline   Blink   Underline+Blink gjpqy                          |\n' +\
+'|Inverse      Underline   Blink   Underline+Blink                                |\n' +\
+'|Bold+Inverse Underline   Blink   Underline+Blink                                |\n' +\
+'|This is double width                                                            |\n' +\
+'|This is double height                                                           |\n' +\
+'|This is double height                                                           |\n' +\
+'|_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ioy                                        |\n' +\
+'|_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ioy                                        |\n' +\
+'|_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ioy                                        |\n' +\
+'|`abcdefghijklmnopqrstuvwxyz{|}~ lqwqk                                           |\n' +\
+'|`abcdefghijklmnopqrstuvwxyz{|}~ tqnqu                                           |\n' +\
+'|`abcdefghijklmnopqrstuvwxyz{|}~ tqnqu                                           |\n' +\
+'|`abcdefghijklmnopqrstuvwxyz{|}~ mqvqj                                           |\n' +\
+'|   This test created by Joe Smith, 8-May-85                                     |\n' +\
+'|                                                                                |\n' +\
+'+--------------------------------------------------------------------------------+\n'
+
+class ansiTestCase (PexpectTestCase.PexpectTestCase):
+    def test_write (self):
+        s = ANSI.ANSI (6,65)
+        s.fill('.')
+        s.cursor_home()
+        for c in write_text:
+            s.write (c)
+        assert str(s) == write_target
+
+    def test_torturet (self):
+        s = ANSI.ANSI (24,80)
+        with open('torturet.vt') as f:
+            sample_text = f.read()
+        for c in sample_text:
+            s.process (c)
+        assert s.pretty() == torture_target, 'processed: \n' + s.pretty() + '\nexpected:\n' + torture_target
+
+    def test_tetris (self):
+        s = ANSI.ANSI (24,80)
+        with open('tetris.data') as f:
+            tetris_text = f.read()
+        for c in tetris_text:
+            s.process (c)
+        assert str(s) == tetris_target
+
+    def test_lines(self):
+        s = ANSI.ANSI(5, 5)
+        s.write('a'*6 + '\n')
+        s.write('ab\bcd\n')
+        s.write('ab\rcd\n')
+        assert str(s) == ('aaaaa\n'
+                          'a    \n'
+                          'acd  \n'
+                          'cd   \n'
+                          '     ')
+
+    def test_number_x(self):
+        """Test the FSM state used to handle more than 2 numeric parameters."""
+        class TestANSI(ANSI.ANSI):
+            captured_memory = None
+            def do_sgr(self, fsm):
+                assert self.captured_memory is None
+                self.captured_memory = fsm.memory
+
+        s = TestANSI(1, 20)
+        s.write('\x1b[0;1;32;45mtest')
+        assert str(s) == ('test                ')
+        assert s.captured_memory is not None
+        assert s.captured_memory == [s, '0', '1', '32', '45']
+
+    def test_fsm_memory(self):
+        """Test the FSM stack/memory does not have numbers left on it
+        after some sequences with numbers are passed in."""
+        s = ANSI.ANSI(1, 20)
+        s.write('\x1b[0;1;2;3m\x1b[4;5;6;7q\x1b[?8h\x1b[?9ltest')
+        assert str(s) == ('test                ')
+        assert s.state.memory == [s]
+
+    def test_utf8_bytes(self):
+        """Test that when bytes are passed in containing UTF-8 encoded
+        characters, where the encoding of each character consists of
+        multiple bytes, the characters are correctly decoded.
+        Incremental decoding is also tested."""
+        s = ANSI.ANSI(2, 10, encoding='utf-8')
+        # This is the UTF-8 encoding of the UCS character "HOURGLASS"
+        # followed by the UTF-8 encoding of the UCS character
+        # "KEYBOARD".  These characters can't be encoded in cp437 or
+        # latin-1.  The "KEYBOARD" character is split into two
+        # separate writes.
+        s.write(b'\xe2\x8c\x9b')
+        s.write(b'\xe2\x8c')
+        s.write(b'\xa8')
+        if PY3:
+            assert str(s) == u'\u231b\u2328        \n          '
+        else:
+            assert unicode(s) == u'\u231b\u2328        \n          '
+            assert str(s) == b'\xe2\x8c\x9b\xe2\x8c\xa8        \n          '
+        assert s.dump() == u'\u231b\u2328                  '
+        assert s.pretty() == u'+----------+\n|\u231b\u2328        |\n|          |\n+----------+\n'
+        assert s.get_abs(1, 1) == u'\u231b'
+        assert s.get_region(1, 1, 1, 5) == [u'\u231b\u2328   ']
+
+    def test_unicode(self):
+        """Test passing in of a unicode string."""
+        s = ANSI.ANSI(2, 10, encoding="utf-8")
+        s.write(u'\u231b\u2328')
+        if PY3:
+            assert str(s) == u'\u231b\u2328        \n          '
+        else:
+            assert unicode(s) == u'\u231b\u2328        \n          '
+            assert str(s) == b'\xe2\x8c\x9b\xe2\x8c\xa8        \n          '
+        assert s.dump() == u'\u231b\u2328                  '
+        assert s.pretty() == u'+----------+\n|\u231b\u2328        |\n|          |\n+----------+\n'
+        assert s.get_abs(1, 1) == u'\u231b'
+        assert s.get_region(1, 1, 1, 5) == [u'\u231b\u2328   ']
+
+    def test_decode_error(self):
+        """Test that default handling of decode errors replaces the
+        invalid characters."""
+        s = ANSI.ANSI(2, 10, encoding="ascii")
+        s.write(b'\xff') # a non-ASCII character
+        # In unicode, the non-ASCII character is replaced with
+        # REPLACEMENT CHARACTER.
+        if PY3:
+            assert str(s) == u'\ufffd         \n          '
+        else:
+            assert unicode(s) == u'\ufffd         \n          '
+            assert str(s) == b'?         \n          '
+        assert s.dump() == u'\ufffd                   '
+        assert s.pretty() == u'+----------+\n|\ufffd         |\n|          |\n+----------+\n'
+        assert s.get_abs(1, 1) == u'\ufffd'
+        assert s.get_region(1, 1, 1, 5) == [u'\ufffd    ']
+
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(ansiTestCase,'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_async.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_async.py
new file mode 100644
index 00000000000..1cc32361fe2
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_async.py
@@ -0,0 +1,70 @@
+try:
+    import asyncio
+except ImportError:
+    asyncio = None
+
+import gc
+import sys
+import unittest
+
+import pexpect
+from .PexpectTestCase import PexpectTestCase
+
+def run(coro):
+    return asyncio.get_event_loop().run_until_complete(coro)
+
+@unittest.skipIf(asyncio is None, "Requires asyncio")
+class AsyncTests(PexpectTestCase):
+    def test_simple_expect(self):
+        p = pexpect.spawn('cat')
+        p.sendline('Hello asyncio')
+        coro = p.expect(['Hello', pexpect.EOF] , async_=True)
+        assert run(coro) == 0
+        print('Done')
+
+    def test_timeout(self):
+        p = pexpect.spawn('cat')
+        coro = p.expect('foo', timeout=1, async_=True)
+        with self.assertRaises(pexpect.TIMEOUT):
+            run(coro)
+        
+        p = pexpect.spawn('cat')
+        coro = p.expect(['foo', pexpect.TIMEOUT], timeout=1, async_=True)
+        assert run(coro) == 1
+
+    def test_eof(self):
+        p = pexpect.spawn('cat')
+        p.sendline('Hi')
+        coro = p.expect(pexpect.EOF, async_=True)
+        p.sendeof()
+        assert run(coro) == 0
+
+        p = pexpect.spawn('cat')
+        p.sendeof()
+        coro = p.expect('Blah', async_=True)
+        with self.assertRaises(pexpect.EOF):
+            run(coro)
+
+    def test_expect_exact(self):
+        p = pexpect.spawn('%s list100.py' % sys.executable)
+        assert run(p.expect_exact(b'5', async_=True)) == 0
+        assert run(p.expect_exact(['wpeok', b'11'], async_=True)) == 1
+        assert run(p.expect_exact([b'foo', pexpect.EOF], async_=True)) == 1
+
+    def test_async_utf8(self):
+        p = pexpect.spawn('%s list100.py' % sys.executable, encoding='utf8')
+        assert run(p.expect_exact(u'5', async_=True)) == 0
+        assert run(p.expect_exact([u'wpeok', u'11'], async_=True)) == 1
+        assert run(p.expect_exact([u'foo', pexpect.EOF], async_=True)) == 1
+
+    def test_async_and_gc(self):
+        p = pexpect.spawn('%s sleep_for.py 1' % sys.executable, encoding='utf8')
+        assert run(p.expect_exact(u'READY', async_=True)) == 0
+        gc.collect()
+        assert run(p.expect_exact(u'END', async_=True)) == 0
+
+    def test_async_and_sync(self):
+        p = pexpect.spawn('echo 1234', encoding='utf8', maxread=1)
+        assert run(p.expect_exact(u'1', async_=True)) == 0
+        assert p.expect_exact(u'2') == 0
+        assert run(p.expect_exact(u'3', async_=True)) == 0
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_command_list_split.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_command_list_split.py
new file mode 100755
index 00000000000..370f46e5b49
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_command_list_split.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+from . import PexpectTestCase
+
+class SplitCommandLineTestCase(PexpectTestCase.PexpectTestCase):
+    def testSplitSizes(self):
+        assert len(pexpect.split_command_line(r'')) == 0
+        assert len(pexpect.split_command_line(r'one')) == 1
+        assert len(pexpect.split_command_line(r'one two')) == 2
+        assert len(pexpect.split_command_line(r'one  two')) == 2
+        assert len(pexpect.split_command_line(r'one   two')) == 2
+        assert len(pexpect.split_command_line(r'one\ one')) == 1
+        assert len(pexpect.split_command_line('\'one one\'')) == 1
+        assert len(pexpect.split_command_line(r'one\"one')) == 1
+        assert len(pexpect.split_command_line(r'This\' is a\'\ test')) == 3
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(SplitCommandLineTestCase,'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_constructor.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_constructor.py
new file mode 100755
index 00000000000..98c473ae584
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_constructor.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+from . import PexpectTestCase
+
+class TestCaseConstructor(PexpectTestCase.PexpectTestCase):
+    def test_constructor (self):
+        '''This tests that the constructor will work and give
+        the same results for different styles of invoking __init__().
+        This assumes that the root directory / is static during the test.
+        '''
+        p1 = pexpect.spawn('uname -m -n -p -r -s -v')
+        p2 = pexpect.spawn('uname', ['-m', '-n', '-p', '-r', '-s', '-v'])
+        p1.expect(pexpect.EOF)
+        p2.expect(pexpect.EOF)
+        assert p1.before == p2.before
+
+    def test_named_parameters (self):
+        '''This tests that named parameters work.
+        '''
+        p = pexpect.spawn ('/bin/ls',timeout=10)
+        p = pexpect.spawn (timeout=10, command='/bin/ls')
+        p = pexpect.spawn (args=[], command='/bin/ls')
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(TestCaseConstructor,'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_ctrl_chars.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_ctrl_chars.py
new file mode 100755
index 00000000000..10d03dbc2af
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_ctrl_chars.py
@@ -0,0 +1,125 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from __future__ import print_function
+
+import pexpect
+import unittest
+from . import PexpectTestCase
+import time
+import sys
+
+from ptyprocess import ptyprocess
+ptyprocess._make_eof_intr()
+
+if sys.version_info[0] >= 3:
+    def byte(i):
+        return bytes([i])
+else:
+    byte = chr
+
+class TestCtrlChars(PexpectTestCase.PexpectTestCase):
+
+    def test_control_chars(self):
+        '''This tests that we can send all 256 8-bit characters to a child
+        process.'''
+        child = pexpect.spawn('python getch.py', echo=False, timeout=5)
+        child.expect('READY')
+        for i in range(1, 256):
+            child.send(byte(i))
+            child.expect ('%d<STOP>' % (i,))
+
+        # This needs to be last, as getch.py exits on \x00
+        child.send(byte(0))
+        child.expect('0<STOP>')
+        child.expect(pexpect.EOF)
+        assert not child.isalive()
+        assert child.exitstatus == 0
+
+    def test_sendintr (self):
+        child = pexpect.spawn('python getch.py', echo=False, timeout=5)
+        child.expect('READY')
+        child.sendintr()
+        child.expect(str(ord(ptyprocess._INTR)) + '<STOP>')
+
+        child.send(byte(0))
+        child.expect('0<STOP>')
+        child.expect(pexpect.EOF)
+        assert not child.isalive()
+        assert child.exitstatus == 0
+
+    def test_sendeof(self):
+        child = pexpect.spawn('python getch.py', echo=False, timeout=5)
+        child.expect('READY')
+        child.sendeof()
+        child.expect(str(ord(ptyprocess._EOF)) + '<STOP>')
+
+        child.send(byte(0))
+        child.expect('0<STOP>')
+        child.expect(pexpect.EOF)
+        assert not child.isalive()
+        assert child.exitstatus == 0
+
+    def test_bad_sendcontrol_chars (self):
+        '''This tests that sendcontrol will return 0 for an unknown char. '''
+
+        child = pexpect.spawn('python getch.py', echo=False, timeout=5)
+        child.expect('READY')
+        assert 0 == child.sendcontrol('1')
+
+    def test_sendcontrol(self):
+        '''This tests that we can send all special control codes by name.
+        '''
+        child = pexpect.spawn('python getch.py', echo=False, timeout=5)
+        child.expect('READY')
+        for ctrl in 'abcdefghijklmnopqrstuvwxyz':
+            assert child.sendcontrol(ctrl) == 1
+            val = ord(ctrl) - ord('a') + 1
+            child.expect_exact(str(val)+'<STOP>')
+
+        # escape character
+        assert child.sendcontrol('[') == 1
+        child.expect('27<STOP>')
+        assert child.sendcontrol('\\') == 1
+        child.expect('28<STOP>')
+        # telnet escape character
+        assert child.sendcontrol(']') == 1
+        child.expect('29<STOP>')
+        assert child.sendcontrol('^') == 1
+        child.expect('30<STOP>')
+        # irc protocol uses this to underline ...
+        assert child.sendcontrol('_') == 1
+        child.expect('31<STOP>')
+        # the real "backspace is delete"
+        assert child.sendcontrol('?') == 1
+        child.expect('127<STOP>')
+
+        # NUL, same as ctrl + ' '
+        assert child.sendcontrol('@') == 1
+        child.expect('0<STOP>')
+        child.expect(pexpect.EOF)
+        assert not child.isalive()
+        assert child.exitstatus == 0
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(TestCtrlChars,'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_delay.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_delay.py
new file mode 100644
index 00000000000..1e4dba687df
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_delay.py
@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+
+from . import PexpectTestCase
+import pexpect
+
+
+class TestCaseDelay(PexpectTestCase.PexpectTestCase):
+    """
+    Tests for various delay attributes.
+    """
+    def test_delaybeforesend(self):
+        """
+        Test various values for delaybeforesend.
+        """
+        p = pexpect.spawn("cat")
+
+        p.delaybeforesend = 1
+        p.sendline("line 1")
+        p.expect("line 1")
+
+        p.delaybeforesend = 0.0
+        p.sendline("line 2")
+        p.expect("line 2")
+
+        p.delaybeforesend = None
+        p.sendline("line 3")
+        p.expect("line 3")
+
+    def test_delayafterread(self):
+        """
+        Test various values for delayafterread.
+        """
+        p = pexpect.spawn("cat")
+
+        p.delayafterread = 1
+        p.sendline("line 1")
+        p.expect("line 1")
+
+        p.delayafterread = 0.0
+        p.sendline("line 2")
+        p.expect("line 2")
+
+        p.delayafterread = None
+        p.sendline("line 3")
+        p.expect("line 3")
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_destructor.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_destructor.py
new file mode 100755
index 00000000000..d27b6f6251e
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_destructor.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+from . import PexpectTestCase
+import gc
+import platform
+import time
+
+class TestCaseDestructor(PexpectTestCase.PexpectTestCase):
+    def test_destructor (self):
+        if platform.python_implementation() != 'CPython':
+            # Details of garbage collection are different on other implementations
+            return 'SKIP'
+        gc.collect()
+        time.sleep(3)
+        p1 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p2 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p3 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p4 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        fd_t1 = (p1.child_fd,p2.child_fd,p3.child_fd,p4.child_fd)
+        p1.expect(pexpect.EOF)
+        p2.expect(pexpect.EOF)
+        p3.expect(pexpect.EOF)
+        p4.expect(pexpect.EOF)
+        p1.kill(9)
+        p2.kill(9)
+        p3.kill(9)
+        p4.kill(9)
+        p1 = None
+        p2 = None
+        p3 = None
+        p4 = None
+        gc.collect()
+        time.sleep(3) # Some platforms are slow at gc... Solaris!
+
+        p1 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p2 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p3 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p4 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        fd_t2 = (p1.child_fd,p2.child_fd,p3.child_fd,p4.child_fd)
+        p1.kill(9)
+        p2.kill(9)
+        p3.kill(9)
+        p4.kill(9)
+        del (p1)
+        del (p2)
+        del (p3)
+        del (p4)
+        gc.collect()
+        time.sleep(3)
+
+        p1 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p2 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p3 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        p4 = pexpect.spawn('%s hello_world.py' % self.PYTHONBIN)
+        fd_t3 = (p1.child_fd,p2.child_fd,p3.child_fd,p4.child_fd)
+
+        assert (fd_t1 == fd_t2 == fd_t3), "pty file descriptors not properly garbage collected (fd_t1,fd_t2,fd_t3)=(%s,%s,%s)" % (str(fd_t1),str(fd_t2),str(fd_t3))
+
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(TestCaseDestructor,'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_dotall.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_dotall.py
new file mode 100755
index 00000000000..68aef3f50b7
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_dotall.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+import re
+from . import PexpectTestCase
+
+testdata = 'BEGIN\nHello world\nEND'
+class TestCaseDotall(PexpectTestCase.PexpectTestCase):
+    def test_dotall (self):
+        p = pexpect.spawn('echo "%s"' % testdata)
+        i = p.expect ([b'BEGIN(.*)END', pexpect.EOF])
+        assert i==0, 'DOTALL does not seem to be working.'
+
+    def test_precompiled (self):
+        p = pexpect.spawn('echo "%s"' % testdata)
+        pat = re.compile(b'BEGIN(.*)END') # This overrides the default DOTALL.
+        i = p.expect ([pat, pexpect.EOF])
+        assert i==1, 'Precompiled pattern to override DOTALL does not seem to be working.'
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(TestCaseDotall,'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_env.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_env.py
new file mode 100755
index 00000000000..ecaaa4bea26
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_env.py
@@ -0,0 +1,93 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2016, Martin Packman <martin.packman@canonical.com>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import contextlib
+import os
+import tempfile
+import unittest
+
+import pexpect
+from . import PexpectTestCase
+
+
+@contextlib.contextmanager
+def example_script(name, output='success'):
+    " helper to create a temporary shell script that tests can run "
+    tempdir = tempfile.mkdtemp(prefix='tmp-pexpect-test')
+    try:
+        script_path = os.path.join(tempdir, name)
+        with open(script_path, 'w') as f:
+            f.write('#!/bin/sh\necho "%s"' % (output,))
+        try:
+            os.chmod(script_path, 0o755)
+            yield tempdir
+        finally:
+            os.remove(script_path)
+    finally:
+        os.rmdir(tempdir)
+
+
+class TestCaseEnv(PexpectTestCase.PexpectTestCase):
+    " tests for the env argument to pexpect.spawn and pexpect.run "
+
+    def test_run_uses_env(self):
+        " pexpect.run uses env argument when running child process "
+        script_name = 'run_uses_env.sh'
+        environ = {'PEXPECT_TEST_KEY': 'pexpect test value'}
+        with example_script(script_name, '$PEXPECT_TEST_KEY') as script_dir:
+            script = os.path.join(script_dir, script_name)
+            out = pexpect.run(script, env=environ)
+        self.assertEqual(out.rstrip(), b'pexpect test value')
+
+    def test_spawn_uses_env(self):
+        " pexpect.spawn uses env argument when running child process "
+        script_name = 'spawn_uses_env.sh'
+        environ = {'PEXPECT_TEST_KEY': 'pexpect test value'}
+        with example_script(script_name, '$PEXPECT_TEST_KEY') as script_dir:
+            script = os.path.join(script_dir, script_name)
+            child = pexpect.spawn(script, env=environ)
+            out = child.readline()
+            child.expect(pexpect.EOF)
+        self.assertEqual(child.exitstatus, 0)
+        self.assertEqual(out.rstrip(), b'pexpect test value')
+
+    def test_run_uses_env_path(self):
+        " pexpect.run uses binary from PATH when given in env argument "
+        script_name = 'run_uses_env_path.sh'
+        with example_script(script_name) as script_dir:
+            out = pexpect.run(script_name, env={'PATH': script_dir})
+        self.assertEqual(out.rstrip(), b'success')
+
+    def test_run_uses_env_path_over_path(self):
+        " pexpect.run uses PATH from env over os.environ "
+        script_name = 'run_uses_env_path_over_path.sh'
+        with example_script(script_name, output='failure') as wrong_dir:
+            with example_script(script_name) as right_dir:
+                orig_path = os.environ['PATH']
+                os.environ['PATH'] = wrong_dir
+                try:
+                    out = pexpect.run(script_name, env={'PATH': right_dir})
+                finally:
+                    os.environ['PATH'] = orig_path
+        self.assertEqual(out.rstrip(), b'success')
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_expect.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_expect.py
new file mode 100755
index 00000000000..795518ab2fc
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_expect.py
@@ -0,0 +1,602 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import multiprocessing
+import unittest
+import subprocess
+import time
+import signal
+import sys
+import os
+
+import pexpect
+from . import PexpectTestCase
+from .utils import no_coverage_env
+
+# Many of these test cases blindly assume that sequential directory
+# listings of the /bin directory will yield the same results.
+# This may not be true, but seems adequate for testing now.
+# I should fix this at some point.
+
+FILTER=''.join([(len(repr(chr(x)))==3) and chr(x) or '.' for x in range(256)])
+def hex_dump(src, length=16):
+    result=[]
+    for i in xrange(0, len(src), length):
+       s = src[i:i+length]
+       hexa = ' '.join(["%02X"%ord(x) for x in s])
+       printable = s.translate(FILTER)
+       result.append("%04X   %-*s   %s\n" % (i, length*3, hexa, printable))
+    return ''.join(result)
+
+def hex_diff(left, right):
+        diff = ['< %s\n> %s' % (_left, _right,) for _left, _right in zip(
+            hex_dump(left).splitlines(), hex_dump(right).splitlines())
+            if _left != _right]
+        return '\n' + '\n'.join(diff,)
+
+
+class ExpectTestCase (PexpectTestCase.PexpectTestCase):
+
+    def test_expect_basic (self):
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        p.sendline (b'Hello')
+        p.sendline (b'there')
+        p.sendline (b'Mr. Python')
+        p.expect (b'Hello')
+        p.expect (b'there')
+        p.expect (b'Mr. Python')
+        p.sendeof ()
+        p.expect (pexpect.EOF)
+
+    def test_expect_exact_basic (self):
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        p.sendline (b'Hello')
+        p.sendline (b'there')
+        p.sendline (b'Mr. Python')
+        p.expect_exact (b'Hello')
+        p.expect_exact (b'there')
+        p.expect_exact (b'Mr. Python')
+        p.sendeof ()
+        p.expect_exact (pexpect.EOF)
+
+    def test_expect_ignore_case(self):
+        '''This test that the ignorecase flag will match patterns
+        even if case is different using the regex (?i) directive.
+        '''
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        p.sendline (b'HELLO')
+        p.sendline (b'there')
+        p.expect (b'(?i)hello')
+        p.expect (b'(?i)THERE')
+        p.sendeof ()
+        p.expect (pexpect.EOF)
+
+    def test_expect_ignore_case_flag(self):
+        '''This test that the ignorecase flag will match patterns
+        even if case is different using the ignorecase flag.
+        '''
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        p.ignorecase = True
+        p.sendline (b'HELLO')
+        p.sendline (b'there')
+        p.expect (b'hello')
+        p.expect (b'THERE')
+        p.sendeof ()
+        p.expect (pexpect.EOF)
+
+    def test_expect_order (self):
+        '''This tests that patterns are matched in the same order as given in the pattern_list.
+
+        (Or does it?  Doesn't it also pass if expect() always chooses
+        (one of the) the leftmost matches in the input? -- grahn)
+        ... agreed! -jquast, the buffer ptr isn't forwarded on match, see first two test cases
+        '''
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        self._expect_order(p)
+
+    def test_expect_order_exact (self):
+        '''Like test_expect_order(), but using expect_exact().
+        '''
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        p.expect = p.expect_exact
+        self._expect_order(p)
+
+    def _expect_order (self, p):
+        p.sendline (b'1234')
+        p.sendline (b'abcd')
+        p.sendline (b'wxyz')
+        p.sendline (b'7890')
+        p.sendeof ()
+        index = p.expect ([
+            b'1234',
+            b'abcd',
+            b'wxyz',
+            pexpect.EOF,
+            b'7890' ])
+        assert index == 0, (index, p.before, p.after)
+        index = p.expect ([
+            b'54321',
+            pexpect.TIMEOUT,
+            b'1234',
+            b'abcd',
+            b'wxyz',
+            pexpect.EOF], timeout=5)
+        assert index == 3, (index, p.before, p.after)
+        index = p.expect ([
+            b'54321',
+            pexpect.TIMEOUT,
+            b'1234',
+            b'abcd',
+            b'wxyz',
+            pexpect.EOF], timeout=5)
+        assert index == 4, (index, p.before, p.after)
+        index = p.expect ([
+            pexpect.EOF,
+            b'abcd',
+            b'wxyz',
+            b'7890' ])
+        assert index == 3, (index, p.before, p.after)
+
+        index = p.expect ([
+            b'abcd',
+            b'wxyz',
+            b'7890',
+            pexpect.EOF])
+        assert index == 3, (index, p.before, p.after)
+
+    def test_expect_setecho_off(self):
+        '''This tests that echo may be toggled off.
+        '''
+        p = pexpect.spawn('cat', echo=True, timeout=5)
+        try:
+            self._expect_echo_toggle(p)
+        except IOError:
+            if sys.platform.lower().startswith('sunos'):
+                if hasattr(unittest, 'SkipTest'):
+                    raise unittest.SkipTest("Not supported on this platform.")
+                return 'skip'
+            raise
+
+    def test_expect_setecho_off_exact(self):
+        p = pexpect.spawn('cat', echo=True, timeout=5)
+        p.expect = p.expect_exact
+        try:
+            self._expect_echo_toggle(p)
+        except IOError:
+            if sys.platform.lower().startswith('sunos'):
+                if hasattr(unittest, 'SkipTest'):
+                    raise unittest.SkipTest("Not supported on this platform.")
+                return 'skip'
+            raise
+
+    def test_waitnoecho(self):
+        " Tests setecho(False) followed by waitnoecho() "
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        try:
+            p.setecho(False)
+            p.waitnoecho()
+        except IOError:
+            if sys.platform.lower().startswith('sunos'):
+                if hasattr(unittest, 'SkipTest'):
+                    raise unittest.SkipTest("Not supported on this platform.")
+                return 'skip'
+            raise
+
+    def test_waitnoecho_order(self):
+
+        ''' This tests that we can wait on a child process to set echo mode.
+        For example, this tests that we could wait for SSH to set ECHO False
+        when asking of a password. This makes use of an external script
+        echo_wait.py. '''
+
+        p1 = pexpect.spawn('%s echo_wait.py' % self.PYTHONBIN)
+        start = time.time()
+        try:
+            p1.waitnoecho(timeout=10)
+        except IOError:
+            if sys.platform.lower().startswith('sunos'):
+                if hasattr(unittest, 'SkipTest'):
+                    raise unittest.SkipTest("Not supported on this platform.")
+                return 'skip'
+            raise
+
+
+        end_time = time.time() - start
+        assert end_time < 10 and end_time > 2, "waitnoecho did not set ECHO off in the expected window of time."
+
+        # test that we actually timeout and return False if ECHO is never set off.
+        p1 = pexpect.spawn('cat')
+        start = time.time()
+        retval = p1.waitnoecho(timeout=4)
+        end_time = time.time() - start
+        assert end_time > 3, "waitnoecho should have waited longer than 2 seconds. retval should be False, retval=%d"%retval
+        assert retval==False, "retval should be False, retval=%d"%retval
+
+        # This one is mainly here to test default timeout for code coverage.
+        p1 = pexpect.spawn('%s echo_wait.py' % self.PYTHONBIN)
+        start = time.time()
+        p1.waitnoecho()
+        end_time = time.time() - start
+        assert end_time < 10, "waitnoecho did not set ECHO off in the expected window of time."
+
+    def test_expect_echo (self):
+        '''This tests that echo is on by default.
+        '''
+        p = pexpect.spawn('cat', echo=True, timeout=5)
+        self._expect_echo(p)
+
+    def test_expect_echo_exact (self):
+        '''Like test_expect_echo(), but using expect_exact().
+        '''
+        p = pexpect.spawn('cat', echo=True, timeout=5)
+        p.expect = p.expect_exact
+        self._expect_echo(p)
+
+    def _expect_echo (self, p):
+        p.sendline (b'1234') # Should see this twice (once from tty echo and again from cat).
+        index = p.expect ([
+            b'1234',
+            b'abcd',
+            b'wxyz',
+            pexpect.EOF,
+            pexpect.TIMEOUT])
+        assert index == 0, "index="+str(index)+"\n"+p.before
+        index = p.expect ([
+            b'1234',
+            b'abcd',
+            b'wxyz',
+            pexpect.EOF])
+        assert index == 0, "index="+str(index)
+
+    def _expect_echo_toggle(self, p):
+        p.sendline (b'1234') # Should see this twice (once from tty echo and again from cat).
+        index = p.expect ([
+            b'1234',
+            b'abcd',
+            b'wxyz',
+            pexpect.EOF,
+            pexpect.TIMEOUT])
+        assert index == 0, "index="+str(index)+"\n"+p.before
+        index = p.expect ([
+            b'1234',
+            b'abcd',
+            b'wxyz',
+            pexpect.EOF])
+        assert index == 0, "index="+str(index)
+        p.setecho(0) # Turn off tty echo
+        p.waitnoecho()
+        p.sendline (b'abcd') # Now, should only see this once.
+        p.sendline (b'wxyz') # Should also be only once.
+        index = p.expect ([
+            pexpect.EOF,
+            pexpect.TIMEOUT,
+            b'abcd',
+            b'wxyz',
+            b'1234'])
+        assert index == 2, "index="+str(index)
+        index = p.expect ([
+            pexpect.EOF,
+            b'abcd',
+            b'wxyz',
+            b'7890'])
+        assert index == 2, "index="+str(index)
+        p.setecho(1) # Turn on tty echo
+        p.sendline (b'7890') # Should see this twice.
+        index = p.expect ([pexpect.EOF,b'abcd',b'wxyz',b'7890'])
+        assert index == 3, "index="+str(index)
+        index = p.expect ([pexpect.EOF,b'abcd',b'wxyz',b'7890'])
+        assert index == 3, "index="+str(index)
+        p.sendeof()
+
+    def test_expect_index (self):
+        '''This tests that mixed list of regex strings, TIMEOUT, and EOF all
+        return the correct index when matched.
+        '''
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        self._expect_index(p)
+
+    def test_expect_index_exact (self):
+        '''Like test_expect_index(), but using expect_exact().
+        '''
+        p = pexpect.spawn('cat', echo=False, timeout=5)
+        p.expect = p.expect_exact
+        self._expect_index(p)
+
+    def _expect_index (self, p):
+        p.sendline (b'1234')
+        index = p.expect ([b'abcd',b'wxyz',b'1234',pexpect.EOF])
+        assert index == 2, "index="+str(index)
+        p.sendline (b'abcd')
+        index = p.expect ([pexpect.TIMEOUT,b'abcd',b'wxyz',b'1234',pexpect.EOF])
+        assert index == 1, "index="+str(index)+str(p)
+        p.sendline (b'wxyz')
+        index = p.expect ([b'54321',pexpect.TIMEOUT,b'abcd',b'wxyz',b'1234',pexpect.EOF])
+        assert index == 3, "index="+str(index) # Expect 'wxyz'
+        p.sendline (b'$*!@?')
+        index = p.expect ([b'54321',pexpect.TIMEOUT,b'abcd',b'wxyz',b'1234',pexpect.EOF],
+                          timeout=1)
+        assert index == 1, "index="+str(index) # Expect TIMEOUT
+        p.sendeof ()
+        index = p.expect ([b'54321',pexpect.TIMEOUT,b'abcd',b'wxyz',b'1234',pexpect.EOF])
+        assert index == 5, "index="+str(index) # Expect EOF
+
+    def test_expect (self):
+        the_old_way = subprocess.Popen(args=['ls', '-l', '/bin'],
+                stdout=subprocess.PIPE).communicate()[0].rstrip()
+        p = pexpect.spawn('ls -l /bin')
+        the_new_way = b''
+        while 1:
+            i = p.expect ([b'\n', pexpect.EOF])
+            the_new_way = the_new_way + p.before
+            if i == 1:
+                break
+        the_new_way = the_new_way.rstrip()
+        the_new_way = the_new_way.replace(b'\r\n', b'\n'
+                ).replace(b'\r', b'\n').replace(b'\n\n', b'\n').rstrip()
+        the_old_way = the_old_way.replace(b'\r\n', b'\n'
+                ).replace(b'\r', b'\n').replace(b'\n\n', b'\n').rstrip()
+        assert the_old_way == the_new_way, hex_diff(the_old_way, the_new_way)
+
+    def test_expect_exact (self):
+        the_old_way = subprocess.Popen(args=['ls', '-l', '/bin'],
+                stdout=subprocess.PIPE).communicate()[0].rstrip()
+        p = pexpect.spawn('ls -l /bin')
+        the_new_way = b''
+        while 1:
+            i = p.expect_exact ([b'\n', pexpect.EOF])
+            the_new_way = the_new_way + p.before
+            if i == 1:
+                break
+        the_new_way = the_new_way.replace(b'\r\n', b'\n'
+                ).replace(b'\r', b'\n').replace(b'\n\n', b'\n').rstrip()
+        the_old_way = the_old_way.replace(b'\r\n', b'\n'
+                ).replace(b'\r', b'\n').replace(b'\n\n', b'\n').rstrip()
+        assert the_old_way == the_new_way, hex_diff(the_old_way, the_new_way)
+        p = pexpect.spawn('echo hello.?world')
+        i = p.expect_exact(b'.?')
+        self.assertEqual(p.before, b'hello')
+        self.assertEqual(p.after, b'.?')
+
+    def test_expect_eof (self):
+        the_old_way = subprocess.Popen(args=['/bin/ls', '-l', '/bin'],
+                stdout=subprocess.PIPE).communicate()[0].rstrip()
+        p = pexpect.spawn('/bin/ls -l /bin')
+        p.expect(pexpect.EOF) # This basically tells it to read everything. Same as pexpect.run() function.
+        the_new_way = p.before
+        the_new_way = the_new_way.replace(b'\r\n', b'\n'
+                ).replace(b'\r', b'\n').replace(b'\n\n', b'\n').rstrip()
+        the_old_way = the_old_way.replace(b'\r\n', b'\n'
+                ).replace(b'\r', b'\n').replace(b'\n\n', b'\n').rstrip()
+        assert the_old_way == the_new_way, hex_diff(the_old_way, the_new_way)
+
+    def test_expect_timeout (self):
+        p = pexpect.spawn('cat', timeout=5)
+        p.expect(pexpect.TIMEOUT) # This tells it to wait for timeout.
+        self.assertEqual(p.after, pexpect.TIMEOUT)
+
+    def test_unexpected_eof (self):
+        p = pexpect.spawn('ls -l /bin')
+        try:
+            p.expect('_Z_XY_XZ') # Probably never see this in ls output.
+        except pexpect.EOF:
+            pass
+        else:
+            self.fail ('Expected an EOF exception.')
+
+    def test_buffer_interface(self):
+        p = pexpect.spawn('cat', timeout=5)
+        p.sendline (b'Hello')
+        p.expect (b'Hello')
+        assert len(p.buffer)
+        p.buffer = b'Testing'
+        p.sendeof ()
+
+    def test_before_across_chunks(self):
+        # https://github.com/pexpect/pexpect/issues/478
+        child = pexpect.spawn(
+            '''/bin/bash -c "openssl rand -base64 {} | head -500 | nl --number-format=rz --number-width=5 2>&1 ; echo 'PATTERN!!!'"'''.format(1024 * 1024 * 2),
+            searchwindowsize=128
+        )
+        child.expect(['PATTERN'])
+        assert len(child.before.splitlines()) == 500
+        assert child.after == b'PATTERN'
+        assert child.buffer == b'!!!\r\n'
+
+    def _before_after(self, p):
+        p.timeout = 5
+
+        p.expect(b'5')
+        self.assertEqual(p.after, b'5')
+        assert p.before.startswith(b'[0, 1, 2'), p.before
+
+        p.expect(b'50')
+        self.assertEqual(p.after, b'50')
+        assert p.before.startswith(b', 6, 7, 8'), p.before[:20]
+        assert p.before.endswith(b'48, 49, '), p.before[-20:]
+
+        p.expect(pexpect.EOF)
+        self.assertEqual(p.after, pexpect.EOF)
+        assert p.before.startswith(b', 51, 52'), p.before[:20]
+        assert p.before.endswith(b', 99]\r\n'), p.before[-20:]
+
+    def test_before_after(self):
+        '''This tests expect() for some simple before/after things.
+        '''
+        p = pexpect.spawn('%s -Wi list100.py' % self.PYTHONBIN, env=no_coverage_env())
+        self._before_after(p)
+
+    def test_before_after_exact(self):
+        '''This tests some simple before/after things, for
+        expect_exact(). (Grahn broke it at one point.)
+        '''
+        p = pexpect.spawn('%s -Wi list100.py' % self.PYTHONBIN, env=no_coverage_env())
+        # mangle the spawn so we test expect_exact() instead
+        p.expect = p.expect_exact
+        self._before_after(p)
+
+    def _ordering(self, p):
+        p.timeout = 20
+        p.expect(b'>>> ')
+
+        p.sendline('list(range(4*3))')
+        self.assertEqual(p.expect([b'5,', b'5,']), 0)
+        p.expect(b'>>> ')
+
+        p.sendline(b'list(range(4*3))')
+        self.assertEqual(p.expect([b'7,', b'5,']), 1)
+        p.expect(b'>>> ')
+
+        p.sendline(b'list(range(4*3))')
+        self.assertEqual(p.expect([b'5,', b'7,']), 0)
+        p.expect(b'>>> ')
+
+        p.sendline(b'list(range(4*5))')
+        self.assertEqual(p.expect([b'2,', b'12,']), 0)
+        p.expect(b'>>> ')
+
+        p.sendline(b'list(range(4*5))')
+        self.assertEqual(p.expect([b'12,', b'2,']), 1)
+
+    def test_ordering(self):
+        '''This tests expect() for which pattern is returned
+        when many may eventually match. I (Grahn) am a bit
+        confused about what should happen, but this test passes
+        with pexpect 2.1.
+        '''
+        p = pexpect.spawn(self.PYTHONBIN)
+        self._ordering(p)
+
+    def test_ordering_exact(self):
+        '''This tests expect_exact() for which pattern is returned
+        when many may eventually match. I (Grahn) am a bit
+        confused about what should happen, but this test passes
+        for the expect() method with pexpect 2.1.
+        '''
+        p = pexpect.spawn(self.PYTHONBIN)
+        # mangle the spawn so we test expect_exact() instead
+        p.expect = p.expect_exact
+        self._ordering(p)
+
+    def _greed(self, expect):
+        # End at the same point: the one with the earliest start should win
+        self.assertEqual(expect([b'3, 4', b'2, 3, 4']), 1)
+
+        # Start at the same point: first pattern passed wins
+        self.assertEqual(expect([b'5,', b'5, 6']), 0)
+
+        # Same pattern passed twice: first instance wins
+        self.assertEqual(expect([b'7, 8', b'7, 8, 9', b'7, 8']), 0)
+
+    def _greed_read1(self, expect):
+        # Here, one has an earlier start and a later end. When processing
+        # one character at a time, the one that finishes first should win,
+        # because we don't know about the other match when it wins.
+        # If maxread > 1, this behaviour is currently undefined, although in
+        # most cases the one that starts first will win.
+        self.assertEqual(expect([b'1, 2, 3', b'2,']), 1)
+
+    def test_greed(self):
+        p = pexpect.spawn(self.PYTHONBIN + ' list100.py')
+        self._greed(p.expect)
+
+        p = pexpect.spawn(self.PYTHONBIN + ' list100.py', maxread=1)
+        self._greed_read1(p.expect)
+
+    def test_greed_exact(self):
+        p = pexpect.spawn(self.PYTHONBIN + ' list100.py')
+        self._greed(p.expect_exact)
+
+        p = pexpect.spawn(self.PYTHONBIN + ' list100.py', maxread=1)
+        self._greed_read1(p.expect_exact)
+
+    def test_bad_arg(self):
+        p = pexpect.spawn('cat')
+        with self.assertRaisesRegexp(TypeError, '.*must be one of'):
+            p.expect(1)
+        with self.assertRaisesRegexp(TypeError, '.*must be one of'):
+            p.expect([1, b'2'])
+        with self.assertRaisesRegexp(TypeError, '.*must be one of'):
+            p.expect_exact(1)
+        with self.assertRaisesRegexp(TypeError, '.*must be one of'):
+            p.expect_exact([1, b'2'])
+
+    def test_timeout_none(self):
+        p = pexpect.spawn('echo abcdef', timeout=None)
+        p.expect('abc')
+        p.expect_exact('def')
+        p.expect(pexpect.EOF)
+
+    def test_signal_handling(self):
+        '''
+            This tests the error handling of a signal interrupt (usually a
+            SIGWINCH generated when a window is resized), but in this test, we
+            are substituting an ALARM signal as this is much easier for testing
+            and is treated the same as a SIGWINCH.
+
+            To ensure that the alarm fires during the expect call, we are
+            setting the signal to alarm after 1 second while the spawned process
+            sleeps for 2 seconds prior to sending the expected output.
+        '''
+        def noop(x, y):
+            pass
+        signal.signal(signal.SIGALRM, noop)
+
+        p1 = pexpect.spawn('%s sleep_for.py 2' % self.PYTHONBIN, timeout=5)
+        p1.expect('READY')
+        signal.alarm(1)
+        p1.expect('END')
+
+    def test_stdin_closed(self):
+        '''
+        Ensure pexpect continues to operate even when stdin is closed
+        '''
+        class Closed_stdin_proc(multiprocessing.Process):
+            def run(self):
+                sys.__stdin__.close()
+                cat = pexpect.spawn('cat')
+                cat.sendeof()
+                cat.expect(pexpect.EOF)
+
+        proc = Closed_stdin_proc()
+        proc.start()
+        proc.join()
+        assert proc.exitcode == 0
+
+    def test_stdin_stdout_closed(self):
+        '''
+        Ensure pexpect continues to operate even when stdin and stdout is closed
+        '''
+        class Closed_stdin_stdout_proc(multiprocessing.Process):
+            def run(self):
+                sys.__stdin__.close()
+                sys.__stdout__.close()
+                cat = pexpect.spawn('cat')
+                cat.sendeof()
+                cat.expect(pexpect.EOF)
+
+        proc = Closed_stdin_stdout_proc()
+        proc.start()
+        proc.join()
+        assert proc.exitcode == 0
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(ExpectTestCase, 'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_filedescriptor.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_filedescriptor.py
new file mode 100755
index 00000000000..d9164e1d50b
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_filedescriptor.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+from pexpect import fdpexpect
+import unittest
+from . import PexpectTestCase
+import os
+
+class ExpectTestCase(PexpectTestCase.PexpectTestCase):
+    def setUp(self):
+        print(self.id())
+        PexpectTestCase.PexpectTestCase.setUp(self)
+
+    def test_fd (self):
+        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+        s = fdpexpect.fdspawn (fd)
+        s.expect(b'This is the end of test data:')
+        s.expect(pexpect.EOF)
+        self.assertEqual(s.before, b' END\n')
+
+    def test_maxread (self):
+        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+        s = fdpexpect.fdspawn (fd)
+        s.maxread = 100
+        s.expect('2')
+        s.expect ('This is the end of test data:')
+        s.expect (pexpect.EOF)
+        self.assertEqual(s.before, b' END\n')
+
+    def test_fd_isalive (self):
+        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+        s = fdpexpect.fdspawn(fd)
+        assert s.isalive()
+        os.close(fd)
+        assert not s.isalive(), "Should not be alive after close()"
+
+    def test_fd_isatty (self):
+        fd = os.open ('TESTDATA.txt', os.O_RDONLY)
+        s = fdpexpect.fdspawn (fd)
+        assert not s.isatty()
+        s.close()
+
+    def test_fileobj(self):
+        f = open('TESTDATA.txt', 'r')
+        s = fdpexpect.fdspawn(f)  # Should get the fileno from the file handle
+        s.expect('2')
+        s.close()
+        assert not s.isalive()
+        s.close()  # Smoketest - should be able to call this again
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(ExpectTestCase, 'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_interact.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_interact.py
new file mode 100755
index 00000000000..865353b7151
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_interact.py
@@ -0,0 +1,101 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import os
+import pexpect
+import unittest
+import sys
+from . import PexpectTestCase
+
+
+class InteractTestCase (PexpectTestCase.PexpectTestCase):
+    def setUp(self):
+        super(InteractTestCase, self).setUp()
+        self.env = env = os.environ.copy()
+
+        # Ensure 'import pexpect' works in subprocess interact*.py
+        if 'PYTHONPATH' in env:
+            env['PYTHONPATH'] = os.pathsep.join((self.project_dir,
+                                                    env['PYTHONPATH']))
+        else:
+            env['PYTHONPATH'] = self.project_dir
+
+        self.interact_py = ('{sys.executable} interact.py'.format(sys=sys))
+
+    def test_interact_escape(self):
+        " Ensure `escape_character' value exits interactive mode. "
+        p = pexpect.spawn(self.interact_py, timeout=5, env=self.env)
+        p.expect('READY')
+        p.sendcontrol(']')  # chr(29), the default `escape_character'
+                            # value of pexpect.interact().
+        p.expect_exact('Escaped interact')
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+        assert p.exitstatus == 0
+
+    def test_interact_escape_None(self):
+        " Return only after Termination when `escape_character=None'. "
+        p = pexpect.spawn('{self.interact_py} --no-escape'.format(self=self),
+                          timeout=5, env=self.env)
+        p.expect('READY')
+        p.sendcontrol(']')
+        p.expect('29<STOP>')
+        p.send('\x00')
+        if not os.environ.get('TRAVIS', None):
+            # on Travis-CI, we sometimes miss trailing stdout from the
+            # chain of child processes, not entirely sure why. So this
+            # is skipped on such systems.
+            p.expect('0<STOP>')
+            p.expect_exact('Escaped interact')
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+        assert p.exitstatus == 0
+
+    def test_interact_exit_unicode(self):
+        " Ensure subprocess receives utf8. "
+        p = pexpect.spawnu('{self.interact_py} --utf8'.format(self=self),
+                           timeout=5, env=self.env)
+        p.expect('READY')
+        p.send('ɑ')              # >>> map(ord, u'ɑ'.encode('utf8'))
+        p.expect('201<STOP>')    # [201, 145]
+        p.expect('145<STOP>')
+        p.send('Β')              # >>> map(ord, u'Β'.encode('utf8'))
+        p.expect('206<STOP>')    # [206, 146]
+        p.expect('146<STOP>')
+        p.send('\x00')
+        if not os.environ.get('TRAVIS', None):
+            # on Travis-CI, we sometimes miss trailing stdout from the
+            # chain of child processes, not entirely sure why. So this
+            # is skipped on such systems.
+            p.expect('0<STOP>')
+            p.expect_exact('Escaped interact')
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+        assert p.exitstatus == 0
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(InteractTestCase, 'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_isalive.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_isalive.py
new file mode 100755
index 00000000000..cd79d09a4d3
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_isalive.py
@@ -0,0 +1,125 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+import signal
+import sys
+import time
+from . import PexpectTestCase
+
+
+class IsAliveTestCase(PexpectTestCase.PexpectTestCase):
+    """Various tests for the running status of processes."""
+
+    def test_expect_wait(self):
+        """Ensure consistency in wait() and isalive()."""
+        p = pexpect.spawn('sleep 1')
+        assert p.isalive()
+        assert p.wait() == 0
+        assert not p.isalive()
+        # In previous versions of ptyprocess/pexpect, calling wait() a second
+        # time would raise an exception, but not since v4.0
+        assert p.wait() == 0
+
+    def test_expect_wait_after_termination(self):
+        """Ensure wait on a process terminated by kill -9."""
+        p = pexpect.spawn('sleep 3')
+        assert p.isalive()
+        p.kill(9)
+        time.sleep(1)
+
+        # when terminated, the exitstatus is None, but p.signalstatus
+        # and p.terminated reflects that the kill -9 nature.
+        assert p.wait() is None
+        assert p.signalstatus == 9
+        assert p.terminated == True
+        assert not p.isalive()
+
+    def test_signal_wait(self):
+        '''Test calling wait with a process terminated by a signal.'''
+        if not hasattr(signal, 'SIGALRM'):
+            return 'SKIP'
+        p = pexpect.spawn(sys.executable, ['alarm_die.py'])
+        p.wait()
+        assert p.exitstatus is None
+        self.assertEqual(p.signalstatus, signal.SIGALRM)
+
+    def test_expect_isalive_dead_after_normal_termination (self):
+        p = pexpect.spawn('ls', timeout=15)
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+
+    def test_expect_isalive_dead_after_SIGHUP(self):
+        p = pexpect.spawn('cat', timeout=5, ignore_sighup=False)
+        assert p.isalive()
+        force = False
+        if sys.platform.lower().startswith('sunos'):
+            # On Solaris (SmartOs), and only when executed from cron(1), SIGKILL
+            # is required to end the sub-process. This is done using force=True
+            force = True
+        assert p.terminate(force) == True
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+
+    def test_expect_isalive_dead_after_SIGINT(self):
+        p = pexpect.spawn('cat', timeout=5)
+        assert p.isalive()
+        force = False
+        if sys.platform.lower().startswith('sunos'):
+            # On Solaris (SmartOs), and only when executed from cron(1), SIGKILL
+            # is required to end the sub-process. This is done using force=True
+            force = True
+        assert p.terminate(force) == True
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+
+    def test_expect_isalive_dead_after_SIGKILL(self):
+        p = pexpect.spawn('cat', timeout=5)
+        assert p.isalive()
+        p.kill(9)
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+
+    def test_forced_terminate(self):
+        p = pexpect.spawn(sys.executable, ['needs_kill.py'])
+        p.expect('READY')
+        assert p.terminate(force=True) == True
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+
+### Some platforms allow this. Some reset status after call to waitpid.
+### probably not necessary, isalive() returns early when terminate is False.
+    def test_expect_isalive_consistent_multiple_calls (self):
+        '''This tests that multiple calls to isalive() return same value.
+        '''
+        p = pexpect.spawn('cat')
+        assert p.isalive()
+        assert p.isalive()
+        p.sendeof()
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+        assert not p.isalive()
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(IsAliveTestCase, 'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_log.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_log.py
new file mode 100755
index 00000000000..4ad225697d8
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_log.py
@@ -0,0 +1,108 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+import os
+import tempfile
+from . import PexpectTestCase
+
+# the program cat(1) may display ^D\x08\x08 when \x04 (EOF, Ctrl-D) is sent
+_CAT_EOF = b'^D\x08\x08'
+
+class TestCaseLog(PexpectTestCase.PexpectTestCase):
+
+    def test_log (self):
+        log_message = 'This is a test.'
+        filename = tempfile.mktemp()
+        mylog = open(filename, 'wb')
+        p = pexpect.spawn('echo', [log_message])
+        p.logfile = mylog
+        p.expect(pexpect.EOF)
+        p.logfile = None
+        mylog.close()
+        with open(filename, 'rb') as f:
+            lf = f.read()
+        os.unlink(filename)
+        self.assertEqual(lf.rstrip(), log_message.encode('ascii'))
+
+    def test_log_logfile_read (self):
+        log_message = 'This is a test.'
+        filename = tempfile.mktemp()
+        mylog = open(filename, 'wb')
+        p = pexpect.spawn('cat')
+        p.logfile_read = mylog
+        p.sendline(log_message)
+        p.sendeof()
+        p.expect(pexpect.EOF)
+        p.logfile = None
+        mylog.close()
+        with open(filename, 'rb') as f:
+            lf = f.read()
+        os.unlink (filename)
+        lf = lf.replace(_CAT_EOF, b'')
+        self.assertEqual(lf, b'This is a test.\r\nThis is a test.\r\n')
+
+    def test_log_logfile_send (self):
+        log_message = b'This is a test.'
+        filename = tempfile.mktemp()
+        mylog = open (filename, 'wb')
+        p = pexpect.spawn('cat')
+        p.logfile_send = mylog
+        p.sendline(log_message)
+        p.sendeof()
+        p.expect (pexpect.EOF)
+        p.logfile = None
+        mylog.close()
+        with open(filename, 'rb') as f:
+            lf = f.read()
+        os.unlink(filename)
+        lf = lf.replace(b'\x04', b'')
+        self.assertEqual(lf.rstrip(), log_message)
+
+    def test_log_send_and_received (self):
+
+        '''The logfile should have the test message three time -- once for the
+        data we sent. Once for the data that cat echos back as characters are
+        typed. And once for the data that cat prints after we send a linefeed
+        (sent by sendline). '''
+
+        log_message = 'This is a test.'
+        filename = tempfile.mktemp()
+        mylog = open(filename, 'wb')
+        p = pexpect.spawn('cat')
+        p.logfile = mylog
+        p.sendline(log_message)
+        p.sendeof()
+        p.expect (pexpect.EOF)
+        p.logfile = None
+        mylog.close()
+        with open(filename, 'rb') as f:
+            lf = f.read()
+        os.unlink(filename)
+        lf = lf.replace(b'\x04', b'').replace(_CAT_EOF, b'')
+        self.assertEqual(lf,
+                b'This is a test.\nThis is a test.\r\nThis is a test.\r\n')
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(TestCaseLog,'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_misc.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_misc.py
new file mode 100755
index 00000000000..6052b6aee13
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_misc.py
@@ -0,0 +1,373 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import unittest
+import sys
+import re
+import signal
+import time
+import tempfile
+import os
+
+import pexpect
+from . import PexpectTestCase
+
+# the program cat(1) may display ^D\x08\x08 when \x04 (EOF, Ctrl-D) is sent
+_CAT_EOF = b'^D\x08\x08'
+
+
+if (sys.version_info[0] >= 3):
+    def _u(s):
+        return s.decode('utf-8')
+else:
+    def _u(s):
+        return s
+
+
+class TestCaseMisc(PexpectTestCase.PexpectTestCase):
+
+    def test_isatty(self):
+        " Test isatty() is True after spawning process on most platforms. "
+        child = pexpect.spawn('cat')
+        if not child.isatty() and sys.platform.lower().startswith('sunos'):
+            if hasattr(unittest, 'SkipTest'):
+                raise unittest.SkipTest("Not supported on this platform.")
+            return 'skip'
+        assert child.isatty()
+
+    def test_isatty_poll(self):
+        " Test isatty() is True after spawning process on most platforms. "
+        child = pexpect.spawn('cat', use_poll=True)
+        if not child.isatty() and sys.platform.lower().startswith('sunos'):
+            if hasattr(unittest, 'SkipTest'):
+                raise unittest.SkipTest("Not supported on this platform.")
+            return 'skip'
+        assert child.isatty()
+
+    def test_read(self):
+        " Test spawn.read by calls of various size. "
+        child = pexpect.spawn('cat')
+        child.sendline("abc")
+        child.sendeof()
+        self.assertEqual(child.read(0), b'')
+        self.assertEqual(child.read(1), b'a')
+        self.assertEqual(child.read(1), b'b')
+        self.assertEqual(child.read(1), b'c')
+        self.assertEqual(child.read(2), b'\r\n')
+        remaining = child.read().replace(_CAT_EOF, b'')
+        self.assertEqual(remaining, b'abc\r\n')
+
+    def test_read_poll(self):
+        " Test spawn.read by calls of various size. "
+        child = pexpect.spawn('cat', use_poll=True)
+        child.sendline("abc")
+        child.sendeof()
+        self.assertEqual(child.read(0), b'')
+        self.assertEqual(child.read(1), b'a')
+        self.assertEqual(child.read(1), b'b')
+        self.assertEqual(child.read(1), b'c')
+        self.assertEqual(child.read(2), b'\r\n')
+        remaining = child.read().replace(_CAT_EOF, b'')
+        self.assertEqual(remaining, b'abc\r\n')
+
+    def test_read_poll_timeout(self):
+        " Test use_poll properly times out "
+        child = pexpect.spawn('sleep 5', use_poll=True)
+        with self.assertRaises(pexpect.TIMEOUT):
+            child.expect(pexpect.EOF, timeout=1)
+
+    def test_readline_bin_echo(self):
+        " Test spawn('echo'). "
+        # given,
+        child = pexpect.spawn('echo', ['alpha', 'beta'])
+
+        # exercise,
+        assert child.readline() == b'alpha beta' + child.crlf
+
+    def test_readline(self):
+        " Test spawn.readline(). "
+        # when argument 0 is sent, nothing is returned.
+        # Otherwise the argument value is meaningless.
+        child = pexpect.spawn('cat', echo=False)
+        child.sendline("alpha")
+        child.sendline("beta")
+        child.sendline("gamma")
+        child.sendline("delta")
+        child.sendeof()
+        assert child.readline(0) == b''
+        assert child.readline().rstrip() == b'alpha'
+        assert child.readline(1).rstrip() == b'beta'
+        assert child.readline(2).rstrip() == b'gamma'
+        assert child.readline().rstrip() == b'delta'
+        child.expect(pexpect.EOF)
+        assert not child.isalive()
+        assert child.exitstatus == 0
+
+    def test_iter(self):
+        " iterating over lines of spawn.__iter__(). "
+        child = pexpect.spawn('cat', echo=False)
+        child.sendline("abc")
+        child.sendline("123")
+        child.sendeof()
+        # Don't use ''.join() because we want to test __iter__().
+        page = b''
+        for line in child:
+            page += line
+        page = page.replace(_CAT_EOF, b'')
+        assert page == b'abc\r\n123\r\n'
+
+    def test_readlines(self):
+        " reading all lines of spawn.readlines(). "
+        child = pexpect.spawn('cat', echo=False)
+        child.sendline("abc")
+        child.sendline("123")
+        child.sendeof()
+        page = b''.join(child.readlines()).replace(_CAT_EOF, b'')
+        assert page == b'abc\r\n123\r\n'
+        child.expect(pexpect.EOF)
+        assert not child.isalive()
+        assert child.exitstatus == 0
+
+    def test_write(self):
+        " write a character and return it in return. "
+        child = pexpect.spawn('cat', echo=False)
+        child.write('a')
+        child.write('\r')
+        self.assertEqual(child.readline(), b'a\r\n')
+
+    def test_writelines(self):
+        " spawn.writelines() "
+        child = pexpect.spawn('cat')
+        # notice that much like file.writelines, we do not delimit by newline
+        # -- it is equivalent to calling write(''.join([args,]))
+        child.writelines(['abc', '123', 'xyz', '\r'])
+        child.sendeof()
+        line = child.readline()
+        assert line == b'abc123xyz\r\n'
+
+    def test_eof(self):
+        " call to expect() after EOF is received raises pexpect.EOF "
+        child = pexpect.spawn('cat')
+        child.sendeof()
+        with self.assertRaises(pexpect.EOF):
+            child.expect('the unexpected')
+
+    def test_with(self):
+        "spawn can be used as a context manager"
+        with pexpect.spawn(sys.executable + ' echo_w_prompt.py') as p:
+            p.expect('<in >')
+            p.sendline(b'alpha')
+            p.expect(b'<out>alpha')
+            assert p.isalive()
+
+        assert not p.isalive()
+
+    def test_terminate(self):
+        " test force terminate always succeeds (SIGKILL). "
+        child = pexpect.spawn('cat')
+        child.terminate(force=1)
+        assert child.terminated
+
+    def test_sighup(self):
+        " validate argument `ignore_sighup=True` and `ignore_sighup=False`. "
+        getch = sys.executable + ' getch.py'
+        child = pexpect.spawn(getch, ignore_sighup=True)
+        child.expect('READY')
+        child.kill(signal.SIGHUP)
+        for _ in range(10):
+            if not child.isalive():
+                self.fail('Child process should not have exited.')
+            time.sleep(0.1)
+
+        child = pexpect.spawn(getch, ignore_sighup=False)
+        child.expect('READY')
+        child.kill(signal.SIGHUP)
+        for _ in range(10):
+            if not child.isalive():
+                break
+            time.sleep(0.1)
+        else:
+            self.fail('Child process should have exited.')
+
+    def test_bad_child_pid(self):
+        " assert bad condition error in isalive(). "
+        expect_errmsg = re.escape("isalive() encountered condition where ")
+        child = pexpect.spawn('cat')
+        child.terminate(force=1)
+        # Force an invalid state to test isalive
+        child.ptyproc.terminated = 0
+        try:
+            with self.assertRaisesRegexp(pexpect.ExceptionPexpect,
+                                         ".*" + expect_errmsg):
+                child.isalive()
+        finally:
+            # Force valid state for child for __del__
+            child.terminated = 1
+
+    def test_bad_arguments_suggest_fdpsawn(self):
+        " assert custom exception for spawn(int). "
+        expect_errmsg = "maybe you want to use fdpexpect.fdspawn"
+        with self.assertRaisesRegexp(pexpect.ExceptionPexpect,
+                                     ".*" + expect_errmsg):
+            pexpect.spawn(1)
+
+    def test_bad_arguments_second_arg_is_list(self):
+        " Second argument to spawn, if used, must be only a list."
+        with self.assertRaises(TypeError):
+            pexpect.spawn('ls', '-la')
+
+        with self.assertRaises(TypeError):
+            # not even a tuple,
+            pexpect.spawn('ls', ('-la',))
+
+    def test_read_after_close_raises_value_error(self):
+        " Calling read_nonblocking after close raises ValueError. "
+        # as read_nonblocking underlies all other calls to read,
+        # ValueError should be thrown for all forms of read.
+        with self.assertRaises(ValueError):
+            p = pexpect.spawn('cat')
+            p.close()
+            p.read_nonblocking()
+
+        with self.assertRaises(ValueError):
+            p = pexpect.spawn('cat')
+            p.close()
+            p.read()
+
+        with self.assertRaises(ValueError):
+            p = pexpect.spawn('cat')
+            p.close()
+            p.readline()
+
+        with self.assertRaises(ValueError):
+            p = pexpect.spawn('cat')
+            p.close()
+            p.readlines()
+
+    def test_isalive(self):
+        " check isalive() before and after EOF. (True, False) "
+        child = pexpect.spawn('cat')
+        assert child.isalive() is True
+        child.sendeof()
+        child.expect(pexpect.EOF)
+        assert child.isalive() is False
+
+    def test_bad_type_in_expect(self):
+        " expect() does not accept dictionary arguments. "
+        child = pexpect.spawn('cat')
+        with self.assertRaises(TypeError):
+            child.expect({})
+
+    def test_cwd(self):
+        " check keyword argument `cwd=' of pexpect.run() "
+        tmp_dir = os.path.realpath(tempfile.gettempdir())
+        default = pexpect.run('pwd')
+        pwd_tmp = pexpect.run('pwd', cwd=tmp_dir).rstrip()
+        assert default != pwd_tmp
+        assert tmp_dir == _u(pwd_tmp)
+
+    def _test_searcher_as(self, searcher, plus=None):
+        # given,
+        given_words = ['alpha', 'beta', 'gamma', 'delta', ]
+        given_search = given_words
+        if searcher == pexpect.searcher_re:
+            given_search = [re.compile(word) for word in given_words]
+        if plus is not None:
+            given_search = given_search + [plus]
+        search_string = searcher(given_search)
+        basic_fmt = '\n    {0}: {1}'
+        fmt = basic_fmt
+        if searcher is pexpect.searcher_re:
+            fmt = '\n    {0}: re.compile({1})'
+        expected_output = '{0}:'.format(searcher.__name__)
+        idx = 0
+        for word in given_words:
+            expected_output += fmt.format(idx, "'{0}'".format(word))
+            idx += 1
+        if plus is not None:
+            if plus == pexpect.EOF:
+                expected_output += basic_fmt.format(idx, 'EOF')
+            elif plus == pexpect.TIMEOUT:
+                expected_output += basic_fmt.format(idx, 'TIMEOUT')
+
+        # exercise,
+        assert search_string.__str__() == expected_output
+
+    def test_searcher_as_string(self):
+        " check searcher_string(..).__str__() "
+        self._test_searcher_as(pexpect.searcher_string)
+
+    def test_searcher_as_string_with_EOF(self):
+        " check searcher_string(..).__str__() that includes EOF "
+        self._test_searcher_as(pexpect.searcher_string, plus=pexpect.EOF)
+
+    def test_searcher_as_string_with_TIMEOUT(self):
+        " check searcher_string(..).__str__() that includes TIMEOUT "
+        self._test_searcher_as(pexpect.searcher_string, plus=pexpect.TIMEOUT)
+
+    def test_searcher_re_as_string(self):
+        " check searcher_re(..).__str__() "
+        self._test_searcher_as(pexpect.searcher_re)
+
+    def test_searcher_re_as_string_with_EOF(self):
+        " check searcher_re(..).__str__() that includes EOF "
+        self._test_searcher_as(pexpect.searcher_re, plus=pexpect.EOF)
+
+    def test_searcher_re_as_string_with_TIMEOUT(self):
+        " check searcher_re(..).__str__() that includes TIMEOUT "
+        self._test_searcher_as(pexpect.searcher_re, plus=pexpect.TIMEOUT)
+
+    def test_nonnative_pty_fork(self):
+        " test forced self.__fork_pty() and __pty_make_controlling_tty "
+        # given,
+        class spawn_ourptyfork(pexpect.spawn):
+            def _spawn(self, command, args=[], preexec_fn=None,
+                       dimensions=None):
+                self.use_native_pty_fork = False
+                pexpect.spawn._spawn(self, command, args, preexec_fn,
+                                     dimensions)
+
+        # exercise,
+        p = spawn_ourptyfork('cat', echo=False)
+        # verify,
+        p.sendline('abc')
+        p.expect('abc')
+        p.sendeof()
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+
+    def test_exception_tb(self):
+        " test get_trace() filters away pexpect/__init__.py calls. "
+        p = pexpect.spawn('sleep 1')
+        try:
+            p.expect('BLAH')
+        except pexpect.ExceptionPexpect as e:
+            # get_trace should filter out frames in pexpect's own code
+            tb = e.get_trace()
+            # exercise,
+            assert 'raise ' not in tb
+            assert 'pexpect/__init__.py' not in tb
+        else:
+            assert False, "Should have raised an exception."
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(TestCaseMisc,'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_missing_command.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_missing_command.py
new file mode 100755
index 00000000000..92e47335e5a
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_missing_command.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+from . import PexpectTestCase
+
+class MissingCommandTestCase (PexpectTestCase.PexpectTestCase):
+    def testMissingCommand(self):
+        try:
+            i = pexpect.spawn ('ZXQYQZX')
+        except Exception:
+            pass
+        else:
+            self.fail('Expected an Exception.')
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(MissingCommandTestCase,'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_performance.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_performance.py
new file mode 100755
index 00000000000..63778af672f
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_performance.py
@@ -0,0 +1,113 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from __future__ import print_function
+
+import unittest, time, sys
+import platform
+import pexpect
+import re
+from . import PexpectTestCase
+
+# This isn't exactly a unit test, but it fits in nicely with the rest of the tests.
+
+class PerformanceTestCase (PexpectTestCase.PexpectTestCase):
+
+    '''Testing the performance of expect, with emphasis on wading through long
+    inputs. '''
+
+    if sys.version_info[0] >= 3:
+        @staticmethod
+        def _iter_n(n):
+            s = 'for n in range(1, %d+1): print(n)' % n
+            return s.encode('ascii')
+
+    else:
+        @staticmethod
+        def _iter_n(n):
+            return 'for n in range(1, %d+1): print(n)' % n
+
+    def plain_range(self, n):
+        e = pexpect.spawn('python', timeout=100)
+        self.assertEqual(e.expect(b'>>>'), 0)
+        e.sendline(self._iter_n(n))
+        self.assertEqual(e.expect(br'\.{3}'), 0)
+        e.sendline(b'')
+        self.assertEqual(e.expect([b'inquisition', '%d' % n]), 1)
+
+    def window_range(self, n):
+        e = pexpect.spawn('python', timeout=100)
+        self.assertEqual(e.expect(b'>>>'), 0)
+        e.sendline(self._iter_n(n))
+        self.assertEqual(e.expect(r'\.{3}'), 0)
+        e.sendline(b'')
+        self.assertEqual(e.expect([b'inquisition', '%d' % n], searchwindowsize=20), 1)
+
+    def exact_range(self, n):
+        e = pexpect.spawn('python', timeout=100)
+        self.assertEqual(e.expect_exact([b'>>>']), 0)
+        e.sendline(self._iter_n(n))
+        self.assertEqual(e.expect_exact([b'...']), 0)
+        e.sendline(b'')
+        self.assertEqual(e.expect_exact([b'inquisition', '%d' % n],timeout=520), 1)
+
+    def ewin_range(self, n):
+        e = pexpect.spawn('python', timeout=100)
+        self.assertEqual(e.expect_exact([b'>>>']), 0)
+        e.sendline(self._iter_n(n))
+        self.assertEqual(e.expect_exact([b'...']), 0)
+        e.sendline(b'')
+        self.assertEqual(e.expect_exact([b'inquisition', '%d' % n], searchwindowsize=20), 1)
+
+    def faster_range(self, n):
+        e = pexpect.spawn('python', timeout=100)
+        self.assertEqual(e.expect(b'>>>'), 0)
+        e.sendline(('list(range(1, %d+1))' % n).encode('ascii'))
+        self.assertEqual(e.expect([b'inquisition', '%d' % n]), 1)
+
+    def test_100000(self):
+        if platform.python_implementation() == 'PyPy':
+            raise unittest.SkipTest("This test fails on PyPy because of REPL differences")
+        print()
+        start_time = time.time()
+        self.plain_range (100000)
+        print("100000 calls to plain_range:", (time.time() - start_time))
+        start_time = time.time()
+        self.window_range(100000)
+        print("100000 calls to window_range:", (time.time() - start_time))
+        start_time = time.time()
+        self.exact_range (100000)
+        print("100000 calls to exact_range:", (time.time() - start_time))
+        start_time = time.time()
+        self.ewin_range  (100000)
+        print("100000 calls to ewin_range:", (time.time() - start_time))
+        start_time = time.time()
+        self.faster_range(100000)
+        print("100000 calls to faster_range:", (time.time() - start_time))
+
+    def test_large_stdout_stream(self):
+        e = pexpect.spawn('openssl rand -base64 {}'.format(1024*1024*25), searchwindowsize=1000)
+        resp = e.expect(['Password:', pexpect.EOF, pexpect.TIMEOUT])
+        assert resp == 1  # index 1 == EOF
+
+if __name__ == "__main__":
+    unittest.main()
+
+suite = unittest.makeSuite(PerformanceTestCase,'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_pickling.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_pickling.py
new file mode 100644
index 00000000000..6538677075a
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_pickling.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+import pickle
+import unittest
+
+from pexpect import ExceptionPexpect
+
+class PickleTest(unittest.TestCase):
+    def test_picking(self):
+        e = ExceptionPexpect('Oh noes!')
+        clone = pickle.loads(pickle.dumps(e))
+        self.assertEqual(e.value, clone.value)
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_popen_spawn.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_popen_spawn.py
new file mode 100644
index 00000000000..fca7493d3be
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_popen_spawn.py
@@ -0,0 +1,139 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import unittest
+import subprocess
+
+
+import pexpect
+from pexpect.popen_spawn import PopenSpawn
+from . import PexpectTestCase
+
+
+class ExpectTestCase (PexpectTestCase.PexpectTestCase):
+
+    def test_expect_basic(self):
+        p = PopenSpawn('cat', timeout=5)
+        p.sendline(b'Hello')
+        p.sendline(b'there')
+        p.sendline(b'Mr. Python')
+        p.expect(b'Hello')
+        p.expect(b'there')
+        p.expect(b'Mr. Python')
+        p.sendeof()
+        p.expect(pexpect.EOF)
+
+    def test_expect_exact_basic(self):
+        p = PopenSpawn('cat', timeout=5)
+        p.sendline(b'Hello')
+        p.sendline(b'there')
+        p.sendline(b'Mr. Python')
+        p.expect_exact(b'Hello')
+        p.expect_exact(b'there')
+        p.expect_exact(b'Mr. Python')
+        p.sendeof()
+        p.expect_exact(pexpect.EOF)
+
+    def test_expect(self):
+        the_old_way = subprocess.Popen(args=['ls', '-l', '/bin'],
+                                       stdout=subprocess.PIPE).communicate()[0].rstrip()
+        p = PopenSpawn('ls -l /bin')
+        the_new_way = b''
+        while 1:
+            i = p.expect([b'\n', pexpect.EOF])
+            the_new_way = the_new_way + p.before
+            if i == 1:
+                break
+            the_new_way += b'\n'
+        the_new_way = the_new_way.rstrip()
+        assert the_old_way == the_new_way, len(the_old_way) - len(the_new_way)
+
+    def test_expect_exact(self):
+        the_old_way = subprocess.Popen(args=['ls', '-l', '/bin'],
+                                       stdout=subprocess.PIPE).communicate()[0].rstrip()
+        p = PopenSpawn('ls -l /bin')
+        the_new_way = b''
+        while 1:
+            i = p.expect_exact([b'\n', pexpect.EOF])
+            the_new_way = the_new_way + p.before
+            if i == 1:
+                break
+            the_new_way += b'\n'
+        the_new_way = the_new_way.rstrip()
+
+        assert the_old_way == the_new_way, len(the_old_way) - len(the_new_way)
+        p = PopenSpawn('echo hello.?world')
+        i = p.expect_exact(b'.?')
+        self.assertEqual(p.before, b'hello')
+        self.assertEqual(p.after, b'.?')
+
+    def test_expect_eof(self):
+        the_old_way = subprocess.Popen(args=['ls', '-l', '/bin'],
+                                       stdout=subprocess.PIPE).communicate()[0].rstrip()
+        p = PopenSpawn('ls -l /bin')
+        # This basically tells it to read everything. Same as pexpect.run()
+        # function.
+        p.expect(pexpect.EOF)
+        the_new_way = p.before.rstrip()
+        assert the_old_way == the_new_way, len(the_old_way) - len(the_new_way)
+
+    def test_expect_timeout(self):
+        p = PopenSpawn('cat', timeout=5)
+        p.expect(pexpect.TIMEOUT)  # This tells it to wait for timeout.
+        self.assertEqual(p.after, pexpect.TIMEOUT)
+
+    def test_unexpected_eof(self):
+        p = PopenSpawn('ls -l /bin')
+        try:
+            p.expect('_Z_XY_XZ')  # Probably never see this in ls output.
+        except pexpect.EOF:
+            pass
+        else:
+            self.fail('Expected an EOF exception.')
+
+    def test_bad_arg(self):
+        p = PopenSpawn('cat')
+        with self.assertRaisesRegexp(TypeError, '.*must be one of'):
+            p.expect(1)
+        with self.assertRaisesRegexp(TypeError, '.*must be one of'):
+            p.expect([1, b'2'])
+        with self.assertRaisesRegexp(TypeError, '.*must be one of'):
+            p.expect_exact(1)
+        with self.assertRaisesRegexp(TypeError, '.*must be one of'):
+            p.expect_exact([1, b'2'])
+
+    def test_timeout_none(self):
+        p = PopenSpawn('echo abcdef', timeout=None)
+        p.expect('abc')
+        p.expect_exact('def')
+        p.expect(pexpect.EOF)
+
+    def test_crlf(self):
+        p = PopenSpawn('echo alpha beta')
+        assert p.read() == b'alpha beta' + p.crlf
+
+    def test_crlf_encoding(self):
+        p = PopenSpawn('echo alpha beta', encoding='utf-8')
+        assert p.read() == 'alpha beta' + p.crlf
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(ExpectTestCase, 'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_pxssh.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_pxssh.py
new file mode 100644
index 00000000000..5f82302ebeb
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_pxssh.py
@@ -0,0 +1,120 @@
+#!/usr/bin/env python
+import os
+import tempfile
+import unittest
+
+from pexpect import pxssh
+
+class SSHTestBase(unittest.TestCase):
+    def setUp(self):
+        self.orig_path = os.environ.get('PATH')
+        fakessh_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), 'fakessh'))
+        os.environ['PATH'] = fakessh_dir + \
+                    ((os.pathsep + self.orig_path) if self.orig_path else '')
+
+    def tearDown(self):
+        if self.orig_path:
+            os.environ['PATH'] = self.orig_path
+        else:
+            del os.environ['PATH']
+
+class PxsshTestCase(SSHTestBase):
+    def test_fake_ssh(self):
+        ssh = pxssh.pxssh()
+        #ssh.logfile_read = sys.stdout  # DEBUG
+        ssh.login('server', 'me', password='s3cret')
+        ssh.sendline('ping')
+        ssh.expect('pong', timeout=10)
+        assert ssh.prompt(timeout=10)
+        ssh.logout()
+
+    def test_wrong_pw(self):
+        ssh = pxssh.pxssh()
+        try:
+            ssh.login('server', 'me', password='wr0ng')
+        except pxssh.ExceptionPxssh:
+            pass
+        else:
+            assert False, 'Password should have been refused'
+
+    def test_failed_set_unique_prompt(self):
+        ssh = pxssh.pxssh()
+        ssh.set_unique_prompt = lambda: False
+        try:
+            ssh.login('server', 'me', password='s3cret',
+                      auto_prompt_reset=True)
+        except pxssh.ExceptionPxssh:
+            pass
+        else:
+            assert False, 'should have raised exception, pxssh.ExceptionPxssh'
+
+    def test_connection_refused(self):
+        ssh = pxssh.pxssh()
+        try:
+            ssh.login('noserver', 'me', password='s3cret')
+        except pxssh.ExceptionPxssh:
+            pass
+        else:
+            assert False, 'should have raised exception, pxssh.ExceptionPxssh'
+
+    def test_ssh_tunnel_string(self):
+        ssh = pxssh.pxssh(debug_command_string=True)
+        tunnels = { 'local': ['2424:localhost:22'],'remote': ['2525:localhost:22'],
+            'dynamic': [8888] }
+        confirmation_strings = 0
+        confirmation_array = ['-R 2525:localhost:22','-L 2424:localhost:22','-D 8888']
+        string = ssh.login('server', 'me', password='s3cret', ssh_tunnels=tunnels)
+        for confirmation in confirmation_array:
+            if confirmation in string:
+                confirmation_strings+=1
+
+        if confirmation_strings!=len(confirmation_array):
+            assert False, 'String generated from tunneling is incorrect.'
+
+    def test_remote_ssh_tunnel_string(self):
+        ssh = pxssh.pxssh(debug_command_string=True)
+        tunnels = { 'local': ['2424:localhost:22'],'remote': ['2525:localhost:22'],
+            'dynamic': [8888] }
+        confirmation_strings = 0
+        confirmation_array = ['-R 2525:localhost:22','-L 2424:localhost:22','-D 8888']
+        string = ssh.login('server', 'me', password='s3cret', ssh_tunnels=tunnels, spawn_local_ssh=False)
+        for confirmation in confirmation_array:
+            if confirmation in string:
+                confirmation_strings+=1
+
+        if confirmation_strings!=len(confirmation_array):
+            assert False, 'String generated from remote tunneling is incorrect.'
+
+    def test_ssh_config_passing_string(self):
+        ssh = pxssh.pxssh(debug_command_string=True)
+        (temp_file,config_path) = tempfile.mkstemp()
+        string = ssh.login('server', 'me', password='s3cret', spawn_local_ssh=False, ssh_config=config_path)
+        if not '-F '+config_path in string:
+            assert False, 'String generated from SSH config passing is incorrect.'
+
+    def test_ssh_key_string(self):
+        ssh = pxssh.pxssh(debug_command_string=True)
+        confirmation_strings = 0
+        confirmation_array = [' -A']
+        string = ssh.login('server', 'me', password='s3cret', ssh_key=True)
+        for confirmation in confirmation_array:
+            if confirmation in string:
+                confirmation_strings+=1
+
+        if confirmation_strings!=len(confirmation_array):
+            assert False, 'String generated from forcing the SSH agent sock is incorrect.'
+
+        confirmation_strings = 0
+        (temp_file,ssh_key) = tempfile.mkstemp()
+        confirmation_array = [' -i '+ssh_key]
+        string = ssh.login('server', 'me', password='s3cret', ssh_key=ssh_key)
+        for confirmation in confirmation_array:
+            if confirmation in string:
+                confirmation_strings+=1
+        
+        if confirmation_strings!=len(confirmation_array):
+            assert False, 'String generated from adding an SSH key is incorrect.'
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_replwrap.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_replwrap.py
new file mode 100644
index 00000000000..d0fe8e21753
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_replwrap.py
@@ -0,0 +1,114 @@
+import platform
+import unittest
+import re
+import os
+
+import pexpect
+from pexpect import replwrap
+
+skip_pypy = "This test fails on PyPy because of REPL differences"
+
+
+class REPLWrapTestCase(unittest.TestCase):
+    def setUp(self):
+        super(REPLWrapTestCase, self).setUp()
+        self.save_ps1 = os.getenv('PS1', r'\$')
+        self.save_ps2 = os.getenv('PS2', '>')
+        os.putenv('PS1', r'\$')
+        os.putenv('PS2', '>')
+
+    def tearDown(self):
+        super(REPLWrapTestCase, self).tearDown()
+        os.putenv('PS1', self.save_ps1)
+        os.putenv('PS2', self.save_ps2)
+
+    def test_bash(self):
+        bash = replwrap.bash()
+        res = bash.run_command("time")
+        assert 'real' in res, res
+
+    def test_pager_as_cat(self):
+        " PAGER is set to cat, to prevent timeout in ``man sleep``. "
+        bash = replwrap.bash()
+        res = bash.run_command('man sleep', timeout=5)
+        assert 'SLEEP' in res, res
+
+    def test_bash_env(self):
+        """env, which displays PS1=..., should not mess up finding the prompt.
+        """
+        bash = replwrap.bash()
+        res = bash.run_command("env")
+        self.assertIn('PS1', res)
+        res = bash.run_command("echo $HOME")
+        assert res.startswith('/'), res
+
+    def test_long_running_multiline(self):
+        " ensure the default timeout is used for multi-line commands. "
+        bash = replwrap.bash()
+        res = bash.run_command("echo begin\r\nsleep 2\r\necho done")
+        self.assertEqual(res.strip().splitlines(), ['begin', 'done'])
+
+    def test_long_running_continuation(self):
+        " also ensure timeout when used within continuation prompts. "
+        bash = replwrap.bash()
+        # The two extra '\\' in the following expression force a continuation
+        # prompt:
+        # $ echo begin\
+        #     + ;
+        # $ sleep 2
+        # $ echo done
+        res = bash.run_command("echo begin\\\n;sleep 2\r\necho done")
+        self.assertEqual(res.strip().splitlines(), ['begin', 'done'])
+
+    def test_multiline(self):
+        bash = replwrap.bash()
+        res = bash.run_command("echo '1 2\n3 4'")
+        self.assertEqual(res.strip().splitlines(), ['1 2', '3 4'])
+
+        # Should raise ValueError if input is incomplete
+        try:
+            bash.run_command("echo '5 6")
+        except ValueError:
+            pass
+        else:
+            assert False, "Didn't raise ValueError for incomplete input"
+
+        # Check that the REPL was reset (SIGINT) after the incomplete input
+        res = bash.run_command("echo '1 2\n3 4'")
+        self.assertEqual(res.strip().splitlines(), ['1 2', '3 4'])
+
+    def test_existing_spawn(self):
+        child = pexpect.spawn("bash", timeout=5, echo=False, encoding='utf-8')
+        repl = replwrap.REPLWrapper(child, re.compile('[$#]'),
+                                    "PS1='{0}' PS2='{1}' "
+                                    "PROMPT_COMMAND=''")
+
+        res = repl.run_command("echo $HOME")
+        assert res.startswith('/'), res
+
+    def test_python(self):
+        if platform.python_implementation() == 'PyPy':
+            raise unittest.SkipTest(skip_pypy)
+
+        p = replwrap.python()
+        res = p.run_command('4+7')
+        assert res.strip() == '11'
+
+        res = p.run_command('for a in range(3): print(a)\n')
+        assert res.strip().splitlines() == ['0', '1', '2']
+
+    def test_no_change_prompt(self):
+        if platform.python_implementation() == 'PyPy':
+            raise unittest.SkipTest(skip_pypy)
+
+        child = pexpect.spawn('python', echo=False, timeout=5, encoding='utf-8')
+        # prompt_change=None should mean no prompt change
+        py = replwrap.REPLWrapper(child, u">>> ", prompt_change=None,
+                                  continuation_prompt=u"... ")
+        assert py.prompt == ">>> "
+
+        res = py.run_command("for a in range(3): print(a)\n")
+        assert res.strip().splitlines() == ['0', '1', '2']
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_repr.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_repr.py
new file mode 100644
index 00000000000..ac337160d7e
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_repr.py
@@ -0,0 +1,37 @@
+""" Test __str__ methods. """
+import pexpect
+
+from . import PexpectTestCase
+
+
+class TestCaseMisc(PexpectTestCase.PexpectTestCase):
+
+    def test_str_spawnu(self):
+        """ Exercise spawnu.__str__() """
+        # given,
+        p = pexpect.spawnu('cat')
+        # exercise,
+        value = str(p)
+        # verify
+        assert isinstance(value, str)
+
+    def test_str_spawn(self):
+        """ Exercise spawn.__str__() """
+        # given,
+        p = pexpect.spawn('cat')
+        # exercise,
+        value = str(p)
+        # verify
+        assert isinstance(value, str)
+
+    def test_str_before_spawn(self):
+        """ Exercise derived spawn.__str__() """
+        # given,
+        child = pexpect.spawn(None, None)
+        child.read_nonblocking = lambda size, timeout: b''
+        try:
+            child.expect('alpha', timeout=0.1)
+        except pexpect.TIMEOUT as e:
+            str(e)  # Smoketest
+        else:
+            assert False, 'TIMEOUT exception expected. No exception raised.'
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_run.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_run.py
new file mode 100755
index 00000000000..1b3c92ff602
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_run.py
@@ -0,0 +1,191 @@
+#!/usr/bin/env python
+# encoding: utf-8
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+import subprocess
+import tempfile
+import sys
+import os
+from . import PexpectTestCase
+
+unicode_type = str if pexpect.PY3 else unicode
+
+
+def timeout_callback(values):
+    if values["event_count"] > 3:
+        return 1
+    return 0
+
+
+def function_events_callback(values):
+    try:
+        previous_echoed = (values["child_result_list"][-1]
+                           .decode().split("\n")[-2].strip())
+        if previous_echoed.endswith("stage-1"):
+            return "echo stage-2\n"
+        elif previous_echoed.endswith("stage-2"):
+            return "echo stage-3\n"
+        elif previous_echoed.endswith("stage-3"):
+            return "exit\n"
+        else:
+            raise Exception("Unexpected output {0}".format(previous_echoed))
+    except IndexError:
+        return "echo stage-1\n"
+
+
+class RunFuncTestCase(PexpectTestCase.PexpectTestCase):
+    runfunc = staticmethod(pexpect.run)
+    cr = b'\r'
+    empty = b''
+    prep_subprocess_out = staticmethod(lambda x: x)
+
+    def setUp(self):
+        fd, self.rcfile = tempfile.mkstemp()
+        os.write(fd, b'PS1=GO: \n')
+        os.close(fd)
+        super(RunFuncTestCase, self).setUp()
+
+    def tearDown(self):
+        os.unlink(self.rcfile)
+        super(RunFuncTestCase, self).tearDown()
+
+    def test_run_exit(self):
+        (data, exitstatus) = self.runfunc('python exit1.py', withexitstatus=1)
+        assert exitstatus == 1, "Exit status of 'python exit1.py' should be 1."
+
+    def test_run(self):
+        the_old_way = subprocess.Popen(
+            args=['uname', '-m', '-n'],
+            stdout=subprocess.PIPE
+        ).communicate()[0].rstrip()
+
+        (the_new_way, exitstatus) = self.runfunc(
+            'uname -m -n', withexitstatus=1)
+        the_new_way = the_new_way.replace(self.cr, self.empty).rstrip()
+
+        self.assertEqual(self.prep_subprocess_out(the_old_way), the_new_way)
+        self.assertEqual(exitstatus, 0)
+
+    def test_run_callback(self):
+        # TODO it seems like this test could block forever if run fails...
+        events = {pexpect.TIMEOUT: timeout_callback}
+        self.runfunc("cat", timeout=1, events=events)
+
+    def test_run_bad_exitstatus(self):
+        (the_new_way, exitstatus) = self.runfunc(
+            'ls -l /najoeufhdnzkxjd', withexitstatus=1)
+        assert exitstatus != 0
+
+    def test_run_event_as_string(self):
+        events = [
+            # second match on 'abc', echo 'def'
+            ('abc\r\n.*GO:', 'echo "def"\n'),
+            # final match on 'def': exit
+            ('def\r\n.*GO:', 'exit\n'),
+            # first match on 'GO:' prompt, echo 'abc'
+            ('GO:', 'echo "abc"\n')
+        ]
+
+        (data, exitstatus) = pexpect.run(
+            'bash --rcfile {0}'.format(self.rcfile),
+            withexitstatus=True,
+            events=events,
+            timeout=10)
+        assert exitstatus == 0
+
+    def test_run_event_as_function(self):
+        events = [
+            ('GO:', function_events_callback)
+        ]
+
+        (data, exitstatus) = pexpect.run(
+            'bash --rcfile {0}'.format(self.rcfile),
+            withexitstatus=True,
+            events=events,
+            timeout=10)
+        assert exitstatus == 0
+
+    def test_run_event_as_method(self):
+        events = [
+            ('GO:', self._method_events_callback)
+        ]
+
+        (data, exitstatus) = pexpect.run(
+            'bash --rcfile {0}'.format(self.rcfile),
+            withexitstatus=True,
+            events=events,
+            timeout=10)
+        assert exitstatus == 0
+
+    def test_run_event_typeerror(self):
+        events = [('GO:', -1)]
+        with self.assertRaises(TypeError):
+            pexpect.run('bash --rcfile {0}'.format(self.rcfile),
+                        withexitstatus=True,
+                        events=events,
+                        timeout=10)
+
+    def _method_events_callback(self, values):
+        try:
+            previous_echoed = (values["child_result_list"][-1].decode()
+                               .split("\n")[-2].strip())
+            if previous_echoed.endswith("foo1"):
+                return "echo foo2\n"
+            elif previous_echoed.endswith("foo2"):
+                return "echo foo3\n"
+            elif previous_echoed.endswith("foo3"):
+                return "exit\n"
+            else:
+                raise Exception("Unexpected output {0!r}"
+                                .format(previous_echoed))
+        except IndexError:
+            return "echo foo1\n"
+
+
+class RunUnicodeFuncTestCase(RunFuncTestCase):
+    runfunc = staticmethod(pexpect.runu)
+    cr = b'\r'.decode('ascii')
+    empty = b''.decode('ascii')
+    prep_subprocess_out = staticmethod(lambda x: x.decode('utf-8', 'replace'))
+
+    def test_run_unicode(self):
+        if pexpect.PY3:
+            char = chr(254)   # þ
+            pattern = '<in >'
+        else:
+            char = unichr(254)  # analysis:ignore
+            pattern = '<in >'.decode('ascii')
+
+        def callback(values):
+            if values['event_count'] == 0:
+                return char + '\n'
+            else:
+                return True  # Stop the child process
+
+        output = pexpect.runu(sys.executable + ' echo_w_prompt.py',
+                              env={'PYTHONIOENCODING': 'utf-8'},
+                              events={pattern: callback})
+        assert isinstance(output, unicode_type), type(output)
+        assert ('<out>' + char) in output, output
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_run_out_of_pty.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_run_out_of_pty.py
new file mode 100755
index 00000000000..309014761df
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_run_out_of_pty.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+from . import PexpectTestCase
+
+class ExpectTestCase(PexpectTestCase.PexpectTestCase):
+    # This takes too long to run and isn't all that interesting of a test.
+    def OFF_test_run_out_of_pty (self):
+        '''This assumes that the tested platform has < 10000 pty devices.
+        This test currently does not work under Solaris.
+        Under Solaris it runs out of file descriptors first and
+        ld.so starts to barf:
+            ld.so.1: pt_chmod: fatal: /usr/lib/libc.so.1: Too many open files
+        '''
+        plist=[]
+        for count in range (0,10000):
+                try:
+                        plist.append (pexpect.spawn('ls -l'))
+                except pexpect.ExceptionPexpect:
+                        for c in range (0, count):
+                            plist[c].close()
+                        return
+                except Exception:
+                        err = sys.exc_info()[1]
+                        self.fail ('Expected ExceptionPexpect. ' + str(err))
+        self.fail ('Could not run out of pty devices. This may be OK.')
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(ExpectTestCase,'test')
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_screen.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_screen.py
new file mode 100755
index 00000000000..2429e57a90a
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_screen.py
@@ -0,0 +1,287 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+import sys
+
+from pexpect import screen
+import unittest
+from . import PexpectTestCase
+
+PY3 = (sys.version_info[0] >= 3)
+
+fill1_target='XXXXXXXXXX\n' + \
+'XOOOOOOOOX\n' + \
+'XO::::::OX\n' + \
+'XO:oooo:OX\n' + \
+'XO:o..o:OX\n' + \
+'XO:o..o:OX\n' + \
+'XO:oooo:OX\n' + \
+'XO::::::OX\n' + \
+'XOOOOOOOOX\n' + \
+'XXXXXXXXXX'
+fill2_target = 'XXXXXXXXXXX\n' + \
+'XOOOOOOOOOX\n' + \
+'XO:::::::OX\n' + \
+'XO:ooooo:OX\n' + \
+'XO:o...o:OX\n' + \
+'XO:o.+.o:OX\n' + \
+'XO:o...o:OX\n' + \
+'XO:ooooo:OX\n' + \
+'XO:::::::OX\n' + \
+'XOOOOOOOOOX\n' + \
+'XXXXXXXXXXX'
+put_target = '\\.3.5.7.9/\n' + \
+'.........2\n' + \
+'3.........\n' + \
+'.........4\n' + \
+'5...\\/....\n' + \
+'..../\\...6\n' + \
+'7.........\n' + \
+'.........8\n' + \
+'9.........\n' + \
+'/2.4.6.8.\\'
+scroll_target = '\\.3.5.7.9/\n' + \
+'\\.3.5.7.9/\n' + \
+'\\.3.5.7.9/\n' + \
+'\\.3.5.7.9/\n' + \
+'5...\\/....\n' + \
+'..../\\...6\n' + \
+'/2.4.6.8.\\\n' + \
+'/2.4.6.8.\\\n' + \
+'/2.4.6.8.\\\n' + \
+'/2.4.6.8.\\'
+insert_target = 'ZXZZZZZZXZ\n' +\
+'.........2\n' +\
+'3.........\n' +\
+'.........4\n' +\
+'Z5...\\/...\n' +\
+'..../Z\\...\n' +\
+'7.........\n' +\
+'.........8\n' +\
+'9.........\n' +\
+'ZZ/2.4.6ZZ'
+get_region_target = ['......', '.\\/...', './\\...', '......']
+
+unicode_box_unicode_result = u'\u2554\u2557\n\u255A\u255D'
+unicode_box_pretty_result = u'''\
++--+
+|\u2554\u2557|
+|\u255A\u255D|
++--+
+'''
+unicode_box_ascii_bytes_result = b'??\n??'
+unicode_box_cp437_bytes_result = b'\xc9\xbb\n\xc8\xbc'
+unicode_box_utf8_bytes_result = b'\xe2\x95\x94\xe2\x95\x97\n\xe2\x95\x9a\xe2\x95\x9d'
+
+class screenTestCase (PexpectTestCase.PexpectTestCase):
+    def make_screen_with_put (self):
+        s = screen.screen(10,10)
+        s.fill ('.')
+        for r in range (1,s.rows + 1):
+            if r % 2:
+                s.put_abs (r, 1, str(r))
+            else:
+                s.put_abs (r, s.cols, str(r))
+        for c in range (1,s.cols + 1):
+            if c % 2:
+                s.put_abs (1, c, str(c))
+            else:
+                s.put_abs (s.rows, c, str(c))
+        s.put_abs(1,1, '\\')
+        s.put_abs(1,s.cols, '/')
+        s.put_abs(s.rows,1,'/')
+        s.put_abs(s.rows, s.cols, '\\')
+        s.put_abs(5,5,'\\')
+        s.put_abs(5,6,'/')
+        s.put_abs(6,5,'/')
+        s.put_abs(6,6,'\\')
+        return s
+
+    def test_fill (self):
+        s = screen.screen (10,10)
+        s.fill_region (10,1,1,10,'X')
+        s.fill_region (2,2,9,9,'O')
+        s.fill_region (8,8,3,3,':')
+        s.fill_region (4,7,7,4,'o')
+        s.fill_region (6,5,5,6,'.')
+        assert str(s) == fill1_target
+
+        s = screen.screen (11,11)
+        s.fill_region (1,1,11,11,'X')
+        s.fill_region (2,2,10,10,'O')
+        s.fill_region (9,9,3,3,':')
+        s.fill_region (4,8,8,4,'o')
+        s.fill_region (7,5,5,7,'.')
+        s.fill_region (6,6,6,6,'+')
+        assert str(s) == fill2_target
+    def test_put (self):
+        s = self.make_screen_with_put()
+        assert str(s) == put_target
+    def test_get_region (self):
+        s = self.make_screen_with_put()
+        r = s.get_region (4,4,7,9)
+        assert r == get_region_target
+
+    def test_cursor_save (self):
+        s = self.make_screen_with_put()
+        s.cursor_home (5,5)
+        c = s.get()
+        s.cursor_save()
+        s.cursor_home()
+        s.cursor_forward()
+        s.cursor_down()
+        s.cursor_unsave()
+        assert s.cur_r == 5 and s.cur_c == 5
+        assert c == s.get()
+    def test_scroll (self):
+        s = self.make_screen_with_put()
+        s.scroll_screen_rows (1,4)
+        s.scroll_down(); s.scroll_down(); s.scroll_down()
+        s.scroll_down(); s.scroll_down(); s.scroll_down()
+        s.scroll_screen_rows (7,10)
+        s.scroll_up(); s.scroll_up(); s.scroll_up()
+        s.scroll_up(); s.scroll_up(); s.scroll_up()
+        assert str(s) == scroll_target
+    def test_insert (self):
+        s = self.make_screen_with_put()
+        s.insert_abs (10,1,'Z')
+        s.insert_abs (1,1,'Z')
+        s.insert_abs (1,1,'Z')
+        s.insert_abs (1,1,'Z')
+        s.insert_abs (1,1,'Z')
+        s.insert_abs (1,1,'Z')
+        s.insert_abs (10,1,'Z')
+        s.insert_abs (1,1,'Z')
+        s.insert_abs (1,1,'Z')
+        s.insert_abs (5,1,'Z')
+        s.insert_abs (6,6,'Z')
+        s.cursor_home (1,1) # Also test relative insert.
+        s.insert ('Z')
+        s.insert ('Z')
+        s.insert ('Z')
+        s.insert ('Z')
+        s.insert_abs (1,8,'X')
+        s.insert_abs (1,2,'X')
+        s.insert_abs (10,9,'Z')
+        s.insert_abs (10,9,'Z')
+        assert str(s) == insert_target
+
+    def make_screen_with_box_unicode(self, *args, **kwargs):
+        '''Creates a screen containing a box drawn using double-line
+        line drawing characters. The characters are fed in as
+        unicode. '''
+        s = screen.screen (2,2,*args,**kwargs)
+        s.put_abs (1,1,u'\u2554')
+        s.put_abs (1,2,u'\u2557')
+        s.put_abs (2,1,u'\u255A')
+        s.put_abs (2,2,u'\u255D')
+        return s
+
+    def make_screen_with_box_cp437(self, *args, **kwargs):
+        '''Creates a screen containing a box drawn using double-line
+        line drawing characters. The characters are fed in as
+        CP437. '''
+        s = screen.screen (2,2,*args,**kwargs)
+        s.put_abs (1,1,b'\xc9')
+        s.put_abs (1,2,b'\xbb')
+        s.put_abs (2,1,b'\xc8')
+        s.put_abs (2,2,b'\xbc')
+        return s
+
+    def make_screen_with_box_utf8(self, *args, **kwargs):
+        '''Creates a screen containing a box drawn using double-line
+        line drawing characters. The characters are fed in as
+        UTF-8. '''
+        s = screen.screen (2,2,*args,**kwargs)
+        s.put_abs (1,1,b'\xe2\x95\x94')
+        s.put_abs (1,2,b'\xe2\x95\x97')
+        s.put_abs (2,1,b'\xe2\x95\x9a')
+        s.put_abs (2,2,b'\xe2\x95\x9d')
+        return s
+
+    def test_unicode_ascii (self):
+        # With the default encoding set to ASCII, we should still be
+        # able to feed in unicode strings and get them back out:
+        s = self.make_screen_with_box_unicode('ascii')
+        if PY3:
+            assert str(s) == unicode_box_unicode_result
+        else:
+            assert unicode(s) == unicode_box_unicode_result
+            # And we should still get something for Python 2 str(), though
+            # it might not be very useful
+            str(s)
+
+        assert s.pretty() == unicode_box_pretty_result
+
+    def test_decoding_errors(self):
+        # With strict error handling, it should reject bytes it can't decode
+        with self.assertRaises(UnicodeDecodeError):
+            self.make_screen_with_box_cp437('ascii', 'strict')
+
+        # replace should turn them into unicode replacement characters, U+FFFD
+        s = self.make_screen_with_box_cp437('ascii', 'replace')
+        expected = u'\ufffd\ufffd\n\ufffd\ufffd'
+        if PY3:
+            assert str(s) == expected
+        else:
+            assert unicode(s) == expected
+
+    def test_unicode_cp437 (self):
+        # Verify decoding from and re-encoding to CP437.
+        s = self.make_screen_with_box_cp437('cp437','strict')
+        if PY3:
+            assert str(s) == unicode_box_unicode_result
+        else:
+            assert unicode(s) == unicode_box_unicode_result
+            assert str(s) == unicode_box_cp437_bytes_result
+        assert s.pretty() == unicode_box_pretty_result
+
+    def test_unicode_utf8 (self):
+        # Verify decoding from and re-encoding to UTF-8.
+        s = self.make_screen_with_box_utf8('utf-8','strict')
+        if PY3:
+            assert str(s) == unicode_box_unicode_result
+        else:
+            assert unicode(s) == unicode_box_unicode_result
+            assert str(s) == unicode_box_utf8_bytes_result
+        assert s.pretty() == unicode_box_pretty_result
+
+    def test_no_bytes(self):
+        s = screen.screen(2, 2, encoding=None)
+        s.put_abs(1, 1, u'A')
+        s.put_abs(2, 2, u'D')
+
+        with self.assertRaises(TypeError):
+            s.put_abs(1, 2, b'B')
+
+        if PY3:
+            assert str(s) == u'A \n D'
+        else:
+            assert unicode(s) == u'A \n D'
+            # This will still work if it's limited to ascii
+            assert str(s) == b'A \n D'
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(screenTestCase,'test')
+
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_socket.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_socket.py
new file mode 100644
index 00000000000..21648f4a0f6
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_socket.py
@@ -0,0 +1,270 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+from pexpect import fdpexpect
+import unittest
+from . import PexpectTestCase
+import multiprocessing
+import os
+import signal
+import socket
+import time
+import errno
+
+
+class SocketServerError(Exception):
+    pass
+
+
+class ExpectTestCase(PexpectTestCase.PexpectTestCase):
+
+    def setUp(self):
+        print(self.id())
+        PexpectTestCase.PexpectTestCase.setUp(self)
+        self.host = '127.0.0.1'
+        self.port = 49152 + 10000
+        self.motd = b"""\
+------------------------------------------------------------------------------
+*                  Welcome to the SOCKET UNIT TEST code!                     *
+------------------------------------------------------------------------------
+*                                                                            *
+* This unit test code is our best effort at testing the ability of the       *
+* pexpect library to handle sockets. We need some text to test buffer size   *
+* handling.                                                                  *
+*                                                                            *
+* A page is 1024 bytes or 1K. 80 x 24 = 1920. So a standard terminal window  *
+* contains more than one page. We actually want more than a page for our     *
+* tests.                                                                     *
+*                                                                            *
+* This is the twelfth line, and we need 24. So we need a few more paragraphs.*
+* We can keep them short and just put lines between them.                    *
+*                                                                            *
+* The 80 x 24 terminal size comes from the ancient past when computers were  *
+* only able to display text in cuneiform writing.                            *
+*                                                                            *
+* The cunieform writing system used the edge of a reed to make marks on clay *
+* tablets.                                                                   *
+*                                                                            *
+* It was the forerunner of the style of handwriting used by doctors to write *
+* prescriptions. Thus the name: pre (before) script (writing) ion (charged   *
+* particle).                                                                 *
+------------------------------------------------------------------------------
+""".replace(b'\n', b'\n\r') + b"\r\n"
+        self.prompt1 = b'Press Return to continue:'
+        self.prompt2 = b'Rate this unit test>'
+        self.prompt3 = b'Press X to exit:'
+        self.enter = b'\r\n'
+        self.exit = b'X\r\n'
+        self.server_up = multiprocessing.Event()
+        self.server_process = multiprocessing.Process(target=self.socket_server, args=(self.server_up,))
+        self.server_process.daemon = True
+        self.server_process.start()
+        counter = 0
+        while not self.server_up.is_set():
+            time.sleep(0.250)
+            counter += 1
+            if counter > (10 / 0.250):
+                raise SocketServerError("Could not start socket server")
+
+    def tearDown(self):
+        os.kill(self.server_process.pid, signal.SIGINT)
+        self.server_process.join(timeout=5.0)
+        PexpectTestCase.PexpectTestCase.tearDown(self)
+
+    def socket_server(self, server_up):
+        sock = None
+        try:
+            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            sock.bind((self.host, self.port))
+            sock.listen(5)
+            server_up.set()
+            while True:
+                (conn, addr) = sock.accept()
+                conn.send(self.motd)
+                conn.send(self.prompt1)
+                result = conn.recv(1024)
+                if result != self.enter:
+                    break
+                conn.send(self.prompt2)
+                result = conn.recv(1024)
+                if result != self.enter:
+                    break
+                conn.send(self.prompt3)
+                result = conn.recv(1024)
+                if result.startswith(self.exit[0]):
+                    conn.shutdown(socket.SHUT_RDWR)
+                    conn.close()
+        except KeyboardInterrupt:
+            pass
+        if sock is not None:
+            try:
+                sock.shutdown(socket.SHUT_RDWR)
+                sock.close()
+            except socket.error:
+                pass
+        exit(0)
+
+    def socket_fn(self, timed_out, all_read):
+        result = 0
+        try:
+            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            sock.connect((self.host, self.port))
+            session = fdpexpect.fdspawn(sock, timeout=10)
+            # Get all data from server
+            session.read_nonblocking(size=4096)
+            all_read.set()
+            # This read should timeout
+            session.read_nonblocking(size=4096)
+        except pexpect.TIMEOUT:
+            timed_out.set()
+            result = errno.ETIMEDOUT
+        exit(result)
+
+    def test_socket(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = fdpexpect.fdspawn(sock.fileno(), timeout=10)
+        session.expect(self.prompt1)
+        self.assertEqual(session.before, self.motd)
+        session.send(self.enter)
+        session.expect(self.prompt2)
+        session.send(self.enter)
+        session.expect(self.prompt3)
+        session.send(self.exit)
+        session.expect(pexpect.EOF)
+        self.assertEqual(session.before, b'')
+
+    def test_socket_with_write(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = fdpexpect.fdspawn(sock.fileno(), timeout=10)
+        session.expect(self.prompt1)
+        self.assertEqual(session.before, self.motd)
+        session.write(self.enter)
+        session.expect(self.prompt2)
+        session.write(self.enter)
+        session.expect(self.prompt3)
+        session.write(self.exit)
+        session.expect(pexpect.EOF)
+        self.assertEqual(session.before, b'')
+
+    def test_not_int(self):
+        with self.assertRaises(pexpect.ExceptionPexpect):
+            session = fdpexpect.fdspawn('bogus', timeout=10)
+
+    def test_not_file_descriptor(self):
+        with self.assertRaises(pexpect.ExceptionPexpect):
+            session = fdpexpect.fdspawn(-1, timeout=10)
+
+    def test_timeout(self):
+        with self.assertRaises(pexpect.TIMEOUT):
+            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            sock.connect((self.host, self.port))
+            session = fdpexpect.fdspawn(sock, timeout=10)
+            session.expect(b'Bogus response')
+
+    def test_interrupt(self):
+        timed_out = multiprocessing.Event()
+        all_read = multiprocessing.Event()
+        test_proc = multiprocessing.Process(target=self.socket_fn, args=(timed_out, all_read))
+        test_proc.daemon = True
+        test_proc.start()
+        while not all_read.is_set():
+            time.sleep(1.0)
+        os.kill(test_proc.pid, signal.SIGWINCH)
+        while not timed_out.is_set():
+            time.sleep(1.0)
+        test_proc.join(timeout=5.0)
+        self.assertEqual(test_proc.exitcode, errno.ETIMEDOUT)
+
+    def test_multiple_interrupts(self):
+        timed_out = multiprocessing.Event()
+        all_read = multiprocessing.Event()
+        test_proc = multiprocessing.Process(target=self.socket_fn, args=(timed_out, all_read))
+        test_proc.daemon = True
+        test_proc.start()
+        while not all_read.is_set():
+            time.sleep(1.0)
+        while not timed_out.is_set():
+            os.kill(test_proc.pid, signal.SIGWINCH)
+            time.sleep(1.0)
+        test_proc.join(timeout=5.0)
+        self.assertEqual(test_proc.exitcode, errno.ETIMEDOUT)
+
+    def test_maxread(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = fdpexpect.fdspawn(sock.fileno(), timeout=10)
+        session.maxread = 1100
+        session.expect(self.prompt1)
+        self.assertEqual(session.before, self.motd)
+        session.send(self.enter)
+        session.expect(self.prompt2)
+        session.send(self.enter)
+        session.expect(self.prompt3)
+        session.send(self.exit)
+        session.expect(pexpect.EOF)
+        self.assertEqual(session.before, b'')
+
+    def test_fd_isalive(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = fdpexpect.fdspawn(sock.fileno(), timeout=10)
+        assert session.isalive()
+        sock.close()
+        assert not session.isalive(), "Should not be alive after close()"
+
+    def test_fd_isalive_poll(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = fdpexpect.fdspawn(sock.fileno(), timeout=10, use_poll=True)
+        assert session.isalive()
+        sock.close()
+        assert not session.isalive(), "Should not be alive after close()"
+
+    def test_fd_isatty(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = fdpexpect.fdspawn(sock.fileno(), timeout=10)
+        assert not session.isatty()
+        session.close()
+
+    def test_fd_isatty_poll(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = fdpexpect.fdspawn(sock.fileno(), timeout=10, use_poll=True)
+        assert not session.isatty()
+        session.close()
+
+    def test_fileobj(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = fdpexpect.fdspawn(sock, timeout=10) # Should get the fileno from the socket
+        session.expect(self.prompt1)
+        session.close()
+        assert not session.isalive()
+        session.close()  # Smoketest - should be able to call this again
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(ExpectTestCase, 'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_timeout_pattern.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_timeout_pattern.py
new file mode 100755
index 00000000000..5f610ef03ed
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_timeout_pattern.py
@@ -0,0 +1,92 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+from __future__ import with_statement  # bring 'with' stmt to py25
+import pexpect
+import unittest
+from . import PexpectTestCase
+import sys
+
+class Exp_TimeoutTestCase(PexpectTestCase.PexpectTestCase):
+    def test_matches_exp_timeout (self):
+        '''This tests that we can raise and catch TIMEOUT.
+        '''
+        try:
+            raise pexpect.TIMEOUT("TIMEOUT match test")
+        except pexpect.TIMEOUT:
+            pass
+            #print "Correctly caught TIMEOUT when raising TIMEOUT."
+        else:
+            self.fail('TIMEOUT not caught by an except TIMEOUT clause.')
+
+    def test_pattern_printout (self):
+        '''Verify that a TIMEOUT returns the proper patterns it is trying to match against.
+        Make sure it is returning the pattern from the correct call.'''
+        try:
+            p = pexpect.spawn('cat')
+            p.sendline('Hello')
+            p.expect('Hello')
+            p.expect('Goodbye',timeout=5)
+        except pexpect.TIMEOUT:
+            assert p.match_index == None
+        else:
+            self.fail("Did not generate a TIMEOUT exception.")
+
+    def test_exp_timeout_notThrown (self):
+        '''Verify that a TIMEOUT is not thrown when we match what we expect.'''
+        try:
+            p = pexpect.spawn('cat')
+            p.sendline('Hello')
+            p.expect('Hello')
+        except pexpect.TIMEOUT:
+            self.fail("TIMEOUT caught when it shouldn't be raised because we match the proper pattern.")
+
+    def test_stacktraceMunging (self):
+        '''Verify that the stack trace returned with a TIMEOUT instance does not contain references to pexpect.'''
+        try:
+            p = pexpect.spawn('cat')
+            p.sendline('Hello')
+            p.expect('Goodbye',timeout=5)
+        except pexpect.TIMEOUT:
+            err = sys.exc_info()[1]
+            if err.get_trace().count("pexpect/__init__.py") != 0:
+                self.fail("The TIMEOUT get_trace() referenced pexpect.py. "
+                    "It should only reference the caller.\n" + err.get_trace())
+
+    def test_correctStackTrace (self):
+        '''Verify that the stack trace returned with a TIMEOUT instance correctly handles function calls.'''
+        def nestedFunction (spawnInstance):
+            spawnInstance.expect("junk", timeout=3)
+
+        try:
+            p = pexpect.spawn('cat')
+            p.sendline('Hello')
+            nestedFunction(p)
+        except pexpect.TIMEOUT:
+            err = sys.exc_info()[1]
+            if err.get_trace().count("nestedFunction") == 0:
+                self.fail("The TIMEOUT get_trace() did not show the call "
+                    "to the nestedFunction function.\n" + str(err) + "\n"
+                    + err.get_trace())
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(Exp_TimeoutTestCase,'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_unicode.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_unicode.py
new file mode 100644
index 00000000000..9b5b988a497
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_unicode.py
@@ -0,0 +1,187 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import platform
+import tempfile
+import sys
+import time
+
+import pexpect
+import unittest
+from . import PexpectTestCase
+
+# the program cat(1) may display ^D\x08\x08 when \x04 (EOF, Ctrl-D) is sent
+_CAT_EOF = '^D\x08\x08'
+
+class UnicodeTests(PexpectTestCase.PexpectTestCase):
+    def test_expect_basic (self):
+        p = pexpect.spawnu('cat')
+        p.sendline('Hello')
+        p.sendline('there')
+        p.sendline('Mr. þython') # þ is more like th than p, but never mind
+        p.expect('Hello')
+        p.expect('there')
+        p.expect('Mr. þython')
+        p.sendeof ()
+        p.expect (pexpect.EOF)
+
+    def test_expect_exact_basic (self):
+        p = pexpect.spawnu('cat')
+        p.sendline('Hello')
+        p.sendline('there')
+        p.sendline('Mr. þython')
+        p.expect_exact('Hello')
+        p.expect_exact('there')
+        p.expect_exact('Mr. þython')
+        p.sendeof()
+        p.expect_exact (pexpect.EOF)
+
+    def test_expect_setecho_toggle(self):
+        '''This tests that echo may be toggled off.
+        '''
+        p = pexpect.spawnu('cat', timeout=5)
+        try:
+            self._expect_echo_toggle_off(p)
+        except IOError:
+            if sys.platform.lower().startswith('sunos'):
+                if hasattr(unittest, 'SkipTest'):
+                    raise unittest.SkipTest("Not supported on this platform.")
+                return 'skip'
+            raise
+        self._expect_echo_toggle_on(p)
+
+    def test_expect_echo_exact (self):
+        '''Like test_expect_echo(), but using expect_exact().
+        '''
+        p = pexpect.spawnu('cat', timeout=5)
+        p.expect = p.expect_exact
+        self._expect_echo(p)
+
+    def test_expect_setecho_toggle_exact(self):
+        p = pexpect.spawnu('cat', timeout=5)
+        p.expect = p.expect_exact
+        try:
+            self._expect_echo_toggle_off(p)
+        except IOError:
+            if sys.platform.lower().startswith('sunos'):
+                if hasattr(unittest, 'SkipTest'):
+                    raise unittest.SkipTest("Not supported on this platform.")
+                return 'skip'
+            raise
+        self._expect_echo_toggle_on(p)
+
+    def _expect_echo (self, p):
+        p.sendline('1234') # Should see this twice (once from tty echo and again from cat).
+        index = p.expect (['1234', 'abcdé', 'wxyz', pexpect.EOF, pexpect.TIMEOUT])
+        assert index == 0, (index, p.before)
+        index = p.expect (['1234', 'abcdé', 'wxyz', pexpect.EOF])
+        assert index == 0, index
+
+    def _expect_echo_toggle_off(self, p):
+        p.setecho(0) # Turn off tty echo
+        p.waitnoecho()
+        p.sendline('abcdé') # Now, should only see this once.
+        p.sendline('wxyz') # Should also be only once.
+        index = p.expect ([pexpect.EOF,pexpect.TIMEOUT, 'abcdé', 'wxyz', '1234'])
+        assert index == 2, index
+        index = p.expect ([pexpect.EOF, 'abcdé', 'wxyz', '7890'])
+        assert index == 2, index
+
+    def _expect_echo_toggle_on(self, p):
+        p.setecho(1) # Turn on tty echo
+        time.sleep(0.2) # there is no waitecho() !
+        p.sendline('7890') # Should see this twice.
+        index = p.expect ([pexpect.EOF, 'abcdé', 'wxyz', '7890'])
+        assert index == 3, index
+        index = p.expect ([pexpect.EOF, 'abcdé', 'wxyz', '7890'])
+        assert index == 3, index
+        p.sendeof()
+
+    def test_log_unicode(self):
+        msg = "abcΩ÷"
+        filename_send = tempfile.mktemp()
+        filename_read = tempfile.mktemp()
+        p = pexpect.spawnu('cat')
+        if platform.python_version_tuple() < ('3', '0', '0'):
+            import codecs
+            def open(fname, mode, **kwargs):
+                if 'newline' in kwargs:
+                    del kwargs['newline']
+                return codecs.open(fname, mode, **kwargs)
+        else:
+            import io
+            open = io.open
+
+        p.logfile_send = open(filename_send, 'w', encoding='utf-8')
+        p.logfile_read = open(filename_read, 'w', encoding='utf-8')
+        p.sendline(msg)
+        p.sendeof()
+        p.expect(pexpect.EOF)
+        p.close()
+        p.logfile_send.close()
+        p.logfile_read.close()
+
+        # ensure the 'send' log is correct,
+        with open(filename_send, 'r', encoding='utf-8') as f:
+            self.assertEqual(f.read(), msg + '\n\x04')
+
+        # ensure the 'read' log is correct,
+        with open(filename_read, 'r', encoding='utf-8', newline='') as f:
+            output = f.read().replace(_CAT_EOF, '')
+            self.assertEqual(output, (msg + '\r\n')*2 )
+
+
+    def test_spawn_expect_ascii_unicode(self):
+        # A bytes-based spawn should be able to handle ASCII-only unicode, for
+        # backwards compatibility.
+        p = pexpect.spawn('cat')
+        p.sendline('Camelot')
+        p.expect('Camelot')
+
+        p.sendline('Aargh')
+        p.sendline('Aårgh')
+        p.expect_exact('Aargh')
+
+        p.sendeof()
+        p.expect(pexpect.EOF)
+
+    def test_spawn_send_unicode(self):
+        # A bytes-based spawn should be able to send arbitrary unicode
+        p = pexpect.spawn('cat')
+        p.sendline('3½')
+        p.sendeof()
+        p.expect(pexpect.EOF)
+
+    def test_spawn_utf8_incomplete(self):
+        # This test case ensures correct incremental decoding, which
+        # otherwise fails when the stream inspected by os.read()
+        # does not align exactly at a utf-8 multibyte boundary:
+        #    UnicodeDecodeError: 'utf8' codec can't decode byte 0xe2 in
+        #                        position 0: unexpected end of data
+        p = pexpect.spawnu('cat', maxread=1)
+        p.sendline('▁▂▃▄▅▆▇█')
+        p.sendeof()
+        p.expect('▁▂▃▄▅▆▇█')
+
+    def test_readline_bin_echo(self):
+        # Test using readline() with spawnu objects. pexpect 3.2 had threw
+        # a TypeError when concatenating a bytestring to a unicode type.
+
+        # given,
+        child = pexpect.spawnu('echo', ['input', ])
+
+        # exercise,
+        assert child.readline() == 'input' + child.crlf
+
+    def test_unicode_argv(self):
+        """ Ensure a program can be executed with unicode arguments. """
+        p = pexpect.spawn(u'echo ǝpoɔıun', timeout=5, encoding='utf8')
+        p.expect(u'ǝpoɔıun')
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+        assert p.exitstatus == 0
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(UnicodeTests, 'test')
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_which.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_which.py
new file mode 100644
index 00000000000..15a8944153d
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_which.py
@@ -0,0 +1,291 @@
+# -*- coding: utf-8 -*-
+import subprocess
+import tempfile
+import shutil
+import errno
+import os
+
+import pexpect
+from . import PexpectTestCase
+
+import pytest
+
+
+class TestCaseWhich(PexpectTestCase.PexpectTestCase):
+    " Tests for pexpect.which(). "
+
+    def test_which_finds_ls(self):
+        " which() can find ls(1). "
+        exercise = pexpect.which("ls")
+        assert exercise is not None
+        assert exercise.startswith('/')
+
+    def test_path_from_env(self):
+        " executable found from optional env argument "
+        bin_name = 'pexpect-test-path-from-env'
+        tempdir = tempfile.mkdtemp()
+        try:
+            bin_path = os.path.join(tempdir, bin_name)
+            with open(bin_path, 'w') as f:
+                f.write('# test file not to be run')
+            try:
+                os.chmod(bin_path, 0o700)
+                found_path = pexpect.which(bin_name, env={'PATH': tempdir})
+            finally:
+                os.remove(bin_path)
+            self.assertEqual(bin_path, found_path)
+        finally:
+            os.rmdir(tempdir)
+
+    def test_os_defpath_which(self):
+        " which() finds an executable in $PATH and returns its abspath. "
+
+        bin_dir = tempfile.mkdtemp()
+        temp_obj = tempfile.NamedTemporaryFile(
+            suffix=u'.sh', prefix=u'ǝpoɔıun-',
+            dir=bin_dir, delete=False)
+        bin_path = temp_obj.name
+        fname = os.path.basename(temp_obj.name)
+        save_path = os.environ['PATH']
+        save_defpath = os.defpath
+
+        try:
+            # setup
+            os.environ['PATH'] = ''
+            os.defpath = bin_dir
+            with open(bin_path, 'w') as fp:
+                pass
+
+            # given non-executable,
+            os.chmod(bin_path, 0o400)
+
+            # exercise absolute and relative,
+            assert pexpect.which(bin_path) is None
+            assert pexpect.which(fname) is None
+
+            # given executable,
+            os.chmod(bin_path, 0o700)
+
+            # exercise absolute and relative,
+            assert pexpect.which(bin_path) == bin_path
+            assert pexpect.which(fname) == bin_path
+
+        finally:
+            # restore,
+            os.environ['PATH'] = save_path
+            os.defpath = save_defpath
+
+            # destroy scratch files and folders,
+            if os.path.exists(bin_path):
+                os.unlink(bin_path)
+            if os.path.exists(bin_dir):
+                os.rmdir(bin_dir)
+
+    def test_path_search_which(self):
+        " which() finds an executable in $PATH and returns its abspath. "
+        fname = 'gcc'
+        bin_dir = tempfile.mkdtemp()
+        bin_path = os.path.join(bin_dir, fname)
+        save_path = os.environ['PATH']
+        try:
+            # setup
+            os.environ['PATH'] = bin_dir
+            with open(bin_path, 'w') as fp:
+                pass
+
+            # given non-executable,
+            os.chmod(bin_path, 0o400)
+
+            # exercise absolute and relative,
+            assert pexpect.which(bin_path) is None
+            assert pexpect.which(fname) is None
+
+            # given executable,
+            os.chmod(bin_path, 0o700)
+
+            # exercise absolute and relative,
+            assert pexpect.which(bin_path) == bin_path
+            assert pexpect.which(fname) == bin_path
+
+        finally:
+            # restore,
+            os.environ['PATH'] = save_path
+
+            # destroy scratch files and folders,
+            if os.path.exists(bin_path):
+                os.unlink(bin_path)
+            if os.path.exists(bin_dir):
+                os.rmdir(bin_dir)
+
+    def test_which_follows_symlink(self):
+        " which() follows symlinks and returns its path. "
+        fname = 'original'
+        symname = 'extra-crispy'
+        bin_dir = tempfile.mkdtemp()
+        bin_path = os.path.join(bin_dir, fname)
+        sym_path = os.path.join(bin_dir, symname)
+        save_path = os.environ['PATH']
+        try:
+            # setup
+            os.environ['PATH'] = bin_dir
+            with open(bin_path, 'w') as fp:
+                pass
+            os.chmod(bin_path, 0o400)
+            os.symlink(bin_path, sym_path)
+
+            # should not be found because symlink points to non-executable
+            assert pexpect.which(symname) is None
+
+            # but now it should -- because it is executable
+            os.chmod(bin_path, 0o700)
+            assert pexpect.which(symname) == sym_path
+
+        finally:
+            # restore,
+            os.environ['PATH'] = save_path
+
+            # destroy scratch files, symlinks, and folders,
+            if os.path.exists(sym_path):
+                os.unlink(sym_path)
+            if os.path.exists(bin_path):
+                os.unlink(bin_path)
+            if os.path.exists(bin_dir):
+                os.rmdir(bin_dir)
+
+    def test_which_should_not_match_folders(self):
+        " Which does not match folders, even though they are executable. "
+        # make up a path and insert a folder that is 'executable', a naive
+        # implementation might match (previously pexpect versions 3.2 and
+        # sh versions 1.0.8, reported by @lcm337.)
+        fname = 'g++'
+        bin_dir = tempfile.mkdtemp()
+        bin_dir2 = os.path.join(bin_dir, fname)
+        save_path = os.environ['PATH']
+        try:
+            os.environ['PATH'] = bin_dir
+            os.mkdir(bin_dir2, 0o755)
+            # should not be found because it is not executable *file*,
+            # but rather, has the executable bit set, as a good folder
+            # should -- it should not be returned because it fails isdir()
+            exercise = pexpect.which(fname)
+            assert exercise is None
+
+        finally:
+            # restore,
+            os.environ['PATH'] = save_path
+            # destroy scratch folders,
+            for _dir in (bin_dir2, bin_dir,):
+                if os.path.exists(_dir):
+                    os.rmdir(_dir)
+
+    def test_which_should_match_other_group_user(self):
+        " which() returns executables by other, group, and user ownership. "
+        # create an executable and test that it is found using which() for
+        # each of the 'other', 'group', and 'user' permission bits.
+        fname = 'g77'
+        bin_dir = tempfile.mkdtemp()
+        bin_path = os.path.join(bin_dir, fname)
+        save_path = os.environ['PATH']
+        try:
+            # setup
+            os.environ['PATH'] = bin_dir
+
+            # an interpreted script requires the ability to read,
+            # whereas a binary program requires only to be executable.
+            #
+            # to gain access to a binary program, we make a copy of
+            # the existing system program echo(1).
+            bin_echo = None
+            for pth in ('/bin/echo', '/usr/bin/echo'):
+                if os.path.exists(pth):
+                    bin_echo = pth
+                    break
+            bin_which = None
+            for pth in ('/bin/which', '/usr/bin/which'):
+                if os.path.exists(pth):
+                    bin_which = pth
+                    break
+            if not bin_echo or not bin_which:
+                pytest.skip('needs `echo` and `which` binaries')
+            shutil.copy(bin_echo, bin_path)
+            isroot = os.getuid() == 0
+            for should_match, mode in (
+                # note that although the file may have matching 'group' or
+                # 'other' executable permissions, it is *not* executable
+                # because the current uid is the owner of the file -- which
+                # takes precedence
+                (False,  0o000),   # ----------, no
+                (isroot, 0o001),   # ---------x, no
+                (isroot, 0o010),   # ------x---, no
+                (True,   0o100),   # ---x------, yes
+                (False,  0o002),   # --------w-, no
+                (False,  0o020),   # -----w----, no
+                (False,  0o200),   # --w-------, no
+                (isroot, 0o003),   # --------wx, no
+                (isroot, 0o030),   # -----wx---, no
+                (True,   0o300),   # --wx------, yes
+                (False,  0o004),   # -------r--, no
+                (False,  0o040),   # ----r-----, no
+                (False,  0o400),   # -r--------, no
+                (isroot, 0o005),   # -------r-x, no
+                (isroot, 0o050),   # ----r-x---, no
+                (True,   0o500),   # -r-x------, yes
+                (False,  0o006),   # -------rw-, no
+                (False,  0o060),   # ----rw----, no
+                (False,  0o600),   # -rw-------, no
+                (isroot, 0o007),   # -------rwx, no
+                (isroot, 0o070),   # ----rwx---, no
+                (True,   0o700),   # -rwx------, yes
+                (isroot, 0o4001),  # ---S-----x, no
+                (isroot, 0o4010),  # ---S--x---, no
+                (True,   0o4100),  # ---s------, yes
+                (isroot, 0o4003),  # ---S----wx, no
+                (isroot, 0o4030),  # ---S-wx---, no
+                (True,   0o4300),  # --ws------, yes
+                (isroot, 0o2001),  # ------S--x, no
+                (isroot, 0o2010),  # ------s---, no
+                (True,   0o2100),  # ---x--S---, yes
+
+            ):
+                mode_str = '{0:0>4o}'.format(mode)
+
+                # given file mode,
+                os.chmod(bin_path, mode)
+
+                # exercise whether we may execute
+                can_execute = True
+                try:
+                    subprocess.Popen(fname).wait() == 0
+                except OSError as err:
+                    if err.errno != errno.EACCES:
+                        raise
+                    # permission denied
+                    can_execute = False
+
+                assert should_match == can_execute, (
+                    should_match, can_execute, mode_str)
+
+                # exercise whether which(1) would match
+                proc = subprocess.Popen((bin_which, fname),
+                                        env={'PATH': bin_dir},
+                                        stdout=subprocess.PIPE)
+                bin_which_match = bool(not proc.wait())
+                assert should_match == bin_which_match, (
+                    should_match, bin_which_match, mode_str)
+
+                # finally, exercise pexpect's which(1) matches
+                # the same.
+                pexpect_match = bool(pexpect.which(fname))
+
+                assert should_match == pexpect_match == bin_which_match, (
+                    should_match, pexpect_match, bin_which_match, mode_str)
+
+        finally:
+            # restore,
+            os.environ['PATH'] = save_path
+
+            # destroy scratch files and folders,
+            if os.path.exists(bin_path):
+                os.unlink(bin_path)
+            if os.path.exists(bin_dir):
+                os.rmdir(bin_dir)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/test_winsize.py b/lldb/third_party/Python/module/pexpect-4.6/tests/test_winsize.py
new file mode 100755
index 00000000000..be16773b756
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/test_winsize.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+import pexpect
+import unittest
+from . import PexpectTestCase
+import time
+
+class TestCaseWinsize(PexpectTestCase.PexpectTestCase):
+
+    def test_initial_winsize(self):
+        """ Assert initial window dimension size (24, 80). """
+        p = pexpect.spawn('{self.PYTHONBIN} sigwinch_report.py'
+                          .format(self=self), timeout=3)
+        # default size by PtyProcess class is 24 rows by 80 columns.
+        p.expect_exact('Initial Size: (24, 80)')
+        p.close()
+
+    def test_initial_winsize_by_dimension(self):
+        """ Assert user-parameter window dimension size is initial. """
+        p = pexpect.spawn('{self.PYTHONBIN} sigwinch_report.py'
+                          .format(self=self), timeout=3,
+                          dimensions=(40, 100))
+        p.expect_exact('Initial Size: (40, 100)')
+        p.close()
+
+    def test_setwinsize(self):
+        """ Ensure method .setwinsize() sends signal caught by child. """
+        p = pexpect.spawn('{self.PYTHONBIN} sigwinch_report.py'
+                          .format(self=self), timeout=3)
+        # Note that we must await the installation of the child process'
+        # signal handler,
+        p.expect_exact('READY')
+        p.setwinsize(19, 84)
+        p.expect_exact('SIGWINCH: (19, 84)')
+        p.close()
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(TestCaseWinsize,'test')
+
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/tetris.data b/lldb/third_party/Python/module/pexpect-4.6/tests/tetris.data
new file mode 100644
index 00000000000..06b6ce6ed2f
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/tetris.data
@@ -0,0 +1,3 @@
+
+  J->LEFT  K->ROTATE  L->RIGHT  SPACE->DROP  P->PAUSE  Q->QUIT
+XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX        XXXXXXXXXX        XXXXXXXXXX        XXXXXXXXXX        XXXXXXXXXXXX  XX        XXXXXXXXXXXX  XXXX  XX        XXXXXXXXXXXXXXXX        XXXXXXXXXX        XXXXXXXXXXXXXXXXXXXX      XXXXXXXX  XX  XXXX      XXXXXXXX  XX  XXXX  XX  XXXX  XX  XXXXXXXXXXXXXXXX      XXXXXXXX      XXXXXXXX        XXXXXXXXXXXXXXXXXXXX      XXXXXXXX  XX  XXXX  XX  XXXX      XXXXXXXXXX      XXXXXX  XXXXXX    XX      XXXXXXXX        XXXXXXXXXXXXXXXX  XXXXXXXXXX  XX  XX      XXXXXXXXXX  XX  XXXX  XX  XXXX      XXXXXXXXXX        XXXXXXXXXXXXXXXXXXXX  XX  XXXX      XXXXXXXX  XX  XXXX  XX  XXXX  XX  XXXX      XXXXXXXXXXXX        XXXXXXXXXXXXXXXXXXXXXX  XX        XXXXXXXXXXXX  XXXX  XXXXXXXXXX        XXXXXXXXXX        XXXXXXXXXXXXXXXX    XXXXXXXXXXXXXXXXXX  XXXXXXXXXX  XX  XXXX  XX  XXXX  XX  XXXX    XXXXXX        XXXXXXXXXXXXXXXXXXXXXX  XX  XX      XXXXXXXXXX  XX  XXXX  XX  XXXXXXXX        XXXXXXXXXXXXXXXXXXXX  XXXX        XXXXXXXXXXXX      XXXXXX  XXXX  XXXXXX    XXXX      XXXXXX  XXXX        XXXXXXXXXXXXXXXXXXXXXX  XX  XXXX  XX  XX  XX  XXXXXXXX  XX  XX  XXXX  XX      XXXXXXXX        XXXXXXXXXXXXXXXXXXXX  XXXX      XXXXXX  XX  XX  XXXXXXXX  XXXXXX    XX  XXXXXX      XXXXXX  XXXX        XXXXXXXXXXXXXXXXXXXX      XXXXXXXX  XX  XXXXXX    XX    XXXXXXXXXX  XX  XXXXXX      XXXXXX  XX  XX  XX    XXXXXX        XXXXXXXXXXXXXXXXXXXX    XX  XXXXXX  XX    XXXXXXXX  XX    XXXXXX        XXXXXXXXXXXXXXXXXXXX  XX  XXXX      XXXXXXXXXX      XXXXXX  XX  XX  XXXX  XXXXXX    XX  XX  XXXX      XXXXXXXXXXXX      XXXX        XXXXXXXXXXXXXXXXXX  XXXXXX  XX  XX  XXXXXXXX  XX  XXXX  XX  XX  XX  XXXXXX  XX  XX  XX    XXXXXX        XXXXXXXXXXXXXXXXXX  XXXXXXXXXXXX  XX  XXXXXX  XX  XXXXXX    XXXXXX        XXXXXXXXXXXXXXXX  XXXXXXXX    XX  XXXXXX  XXXXXX        XXXXXXXXXXXXXXXXXXXX        XXXXXXXXXXXXXXXXXXXX  XXXXXX  XX  XX  XXXXXXXX  XX  XXXX  XX  XX        XXXXXXXXXXXXXXXXXXXX  XX  XXXX    XX  XX  XX  XXXXXXXX  XX    XXXXXXXX  XX  XXXX  XX    XXXXXXXXXXXXXXXX  XXXX  XXXXXXXX  XX  XX  XXXX  XX  XXXX  XX  XX  XX  XXXX    XXXXXXXX  XX  XX  XX        XXXXXXXXXXXXXXXXXXXX  XX  XXXX    XX  XX  XX  XXXXXXXXXXXXXXXX  XXXX      XXXXXXXXXXXXXXXXXXXX  XXXXXXXXXXXX  XX  XXXXXX  XX  XX    XXXXXXXXXXXXXX  XXXXXXXXXXXXXXXXXXXXXXXX    XXXXXXXXXXXXXX
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/ticker.py b/lldb/third_party/Python/module/pexpect-4.6/tests/ticker.py
new file mode 100755
index 00000000000..5ecc1c21be0
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/ticker.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+'''
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+import time, sys
+
+for i in range(5):
+  print "tick"
+  time.sleep(1)
+
+sys.exit(0)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/torturet.vt b/lldb/third_party/Python/module/pexpect-4.6/tests/torturet.vt
new file mode 100644
index 00000000000..65f965b505d
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/torturet.vt
@@ -0,0 +1,61 @@
+\<>PrEM1\[?4h
+#6(0a`opqrs`(B      This is the       (0`srqpo`a(B
+#3VT100 series Torture Test Demonstration.
+#4VT100 series Torture Test Demonstration.
+#6       Watch the blinking lights        
+
+
+
+PrEM0\
+
+This file is a VT100-series Torture Test.  It demonstrates all the visual
+attributes of the VT100 terminal.
+
+The top line is double-width/single-height with inverse-video line-drawing
+characters.  The 2nd and 3rd lines are double-width/double-height in bold
+inverse video.  They also show the limited scrolling region.
+
+The remaining lines will show NORMAL, BOLD, BLINK, INVERSE, and all 16
+combinations of those 4 attributes.  They show that there is a difference
+between an underscore character and the underline attribute, and that
+lower-case decenders go below the underline.
+
+A window pane is drawn in the lower right to show how the line-drawing set
+can be used.  At the lower left is the character set double-wide/double-high
+to show the dot-matrix used.  Upper-case characters are 8 by 7 in a 10 by 10
+character cell, with 1 blank row on top and 2 on the bottom.  The underline
+attribute uses the first bottom blank row, lower-case decenders use both.
+
+
+
+This is a normal line __________________________________________________y_
+This is a bold line (normal unless the Advanced Video Option is installed)
+This line is underlined _ "       "       "       "       "       "    _y_
+This is a blinking line _ "       "       "       "       "       "    _y_
+This is inverse video _ (underlined if no AVO and cursor is underline) _y_
+Normal gjpqy Underline   Blink   Underline+Blink gjpqy
+Bold   gjpqy Underline   Blink   Underline+Blink gjpqy
+Inverse      Underline   Blink   Underline+Blink
+Bold+Inverse Underline   Blink   Underline+Blink
+PrEM1\
+#6This is double width
+#3This is double height
+#4This is double height
+#6_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ioy
+#3_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ioy
+#4_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ioy
+ACEGIKMOQSUWY02468iy
+_BDFHJLNPRTVXZ13579o
+_BDFHJLNPRTVXZ13579o
+(0#6`abcdefghijklmnopqrstuvwxyz{|}~ lqwqk
+#3`abcdefghijklmnopqrstuvwxyz{|}~ tqnqu
+#4`abcdefghijklmnopqrstuvwxyz{|}~ tqnqu
+acegikmoqsuwy{}
+`bdfhjlnprtvxz|~
+`bdfhjlnprtvxz|~(B
+#6`abcdefghijklmnopqrstuvwxyz{|}~(0 mqvqj(B
+acegikmoqsuwy{}
+PrEM0\ $PrEM0 works on GIGI 
+   This test created by Joe Smith, 8-May-85   
+
+
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tests/utils.py b/lldb/third_party/Python/module/pexpect-4.6/tests/utils.py
new file mode 100644
index 00000000000..dcd3aa017da
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tests/utils.py
@@ -0,0 +1,7 @@
+import os
+
+def no_coverage_env():
+    "Return a copy of os.environ that won't trigger coverage measurement."
+    env = os.environ.copy()
+    env.pop('COV_CORE_SOURCE', None)
+    return env
\ No newline at end of file
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tools/display-fpathconf.py b/lldb/third_party/Python/module/pexpect-4.6/tools/display-fpathconf.py
new file mode 100644
index 00000000000..d40cbae206f
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tools/display-fpathconf.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+"""Displays os.fpathconf values related to terminals. """
+from __future__ import print_function
+import sys
+import os
+
+
+def display_fpathconf():
+    DISP_VALUES = (
+        ('PC_MAX_CANON', ('Max no. of bytes in a '
+                          'terminal canonical input line.')),
+        ('PC_MAX_INPUT', ('Max no. of bytes for which '
+                          'space is available in a terminal input queue.')),
+        ('PC_PIPE_BUF', ('Max no. of bytes which will '
+                         'be written atomically to a pipe.')),
+        ('PC_VDISABLE', 'Terminal character disabling value.')
+    )
+    FMT = '{name:<13} {value:<5} {description}'
+
+    # column header
+    print(FMT.format(name='name', value='value', description='description'))
+    print(FMT.format(name=('-' * 13), value=('-' * 5), description=('-' * 11)))
+
+    fd = sys.stdin.fileno()
+    for name, description in DISP_VALUES:
+        key = os.pathconf_names.get(name, None)
+        if key is None:
+            value = 'UNDEF'
+        else:
+            try:
+                value = os.fpathconf(fd, name)
+            except OSError as err:
+                value = 'OSErrno {0.errno}'.format(err)
+        if name == 'PC_VDISABLE':
+            value = hex(value)
+        print(FMT.format(name=name, value=value, description=description))
+    print()
+
+
+if __name__ == '__main__':
+    display_fpathconf()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tools/display-maxcanon.py b/lldb/third_party/Python/module/pexpect-4.6/tools/display-maxcanon.py
new file mode 100644
index 00000000000..cbd664ffec7
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tools/display-maxcanon.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+"""
+This tool uses pexpect to test expected Canonical mode length.
+
+All systems use the value of MAX_CANON which can be found using
+fpathconf(3) value PC_MAX_CANON -- with the exception of Linux
+and FreeBSD.
+
+Linux, though defining a value of 255, actually honors the value
+of 4096 from linux kernel include file tty.h definition
+N_TTY_BUF_SIZE.
+
+Linux also does not honor IMAXBEL. termios(3) states, "Linux does not
+implement this bit, and acts as if it is always set." Although these
+tests ensure it is enabled, this is a non-op for Linux.
+
+FreeBSD supports neither, and instead uses a fraction (1/5) of the tty
+speed which is always 9600.  Therefor, the maximum limited input line
+length is 9600 / 5 = 1920.
+
+These tests only ensure the correctness of the behavior described by
+the sendline() docstring -- the values listed there, and above should
+be equal to the output of the given OS described, but no promises!
+"""
+# std import
+from __future__ import print_function
+import sys
+import os
+
+
+def detect_maxcanon():
+    import pexpect
+    bashrc = os.path.join(
+        # re-use pexpect/replwrap.py's bashrc file,
+        os.path.dirname(__file__), os.path.pardir, 'pexpect', 'bashrc.sh')
+
+    child = pexpect.spawn('bash', ['--rcfile', bashrc],
+                          echo=True, encoding='utf8', timeout=3)
+
+    child.sendline(u'echo -n READY_; echo GO')
+    child.expect_exact(u'READY_GO')
+
+    child.sendline(u'stty icanon imaxbel erase ^H; echo -n retval: $?')
+    child.expect_exact(u'retval: 0')
+
+    child.sendline(u'echo -n GO_; echo AGAIN')
+    child.expect_exact(u'GO_AGAIN')
+    child.sendline(u'cat')
+
+    child.delaybeforesend = 0
+
+    column, blocksize = 0, 64
+    ch_marker = u'_'
+
+    print('auto-detecting MAX_CANON: ', end='')
+    sys.stdout.flush()
+
+    while True:
+        child.send(ch_marker * blocksize)
+        result = child.expect([ch_marker * blocksize, u'\a'])
+        if result == 0:
+            # entire block fit without emitting bel
+            column += blocksize
+        elif result == 1:
+            # an '\a' was emitted, count the number of ch_markers
+            # found since last blocksize, determining our MAX_CANON
+            column += child.before.count(ch_marker)
+            break
+    print(column)
+
+if __name__ == '__main__':
+    try:
+        detect_maxcanon()
+    except ImportError:
+        # we'd like to use this with CI -- but until we integrate
+        # with tox, we can't determine a period in testing when
+        # the pexpect module has been installed 
+        print('warning: pexpect not in module path, MAX_CANON '
+              'could not be determined by systems test.',
+              file=sys.stderr)
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tools/display-sighandlers.py b/lldb/third_party/Python/module/pexpect-4.6/tools/display-sighandlers.py
new file mode 100755
index 00000000000..f3559f72e31
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tools/display-sighandlers.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+# Displays all signals, their values, and their handlers.
+from __future__ import print_function
+import signal
+FMT = '{name:<10} {value:<5} {description}'
+
+# header
+print(FMT.format(name='name', value='value', description='description'))
+print('-' * (33))
+
+for name, value in [(signal_name, getattr(signal, signal_name))
+                    for signal_name in dir(signal)
+                    if signal_name.startswith('SIG')
+                    and not signal_name.startswith('SIG_')]:
+    try:
+        handler = signal.getsignal(value)
+    except ValueError:
+        # FreeBSD: signal number out of range
+        handler = 'out of range'
+    description = {
+        signal.SIG_IGN: "ignored(SIG_IGN)",
+        signal.SIG_DFL: "default(SIG_DFL)"
+    }.get(handler, handler)
+    print(FMT.format(name=name, value=value, description=description))
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tools/display-terminalinfo.py b/lldb/third_party/Python/module/pexpect-4.6/tools/display-terminalinfo.py
new file mode 100755
index 00000000000..1288397acbb
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tools/display-terminalinfo.py
@@ -0,0 +1,212 @@
+#!/usr/bin/env python
+""" Display known information about our terminal. """
+from __future__ import print_function
+import termios
+import locale
+import sys
+import os
+
+BITMAP_IFLAG = {
+    'IGNBRK': 'ignore BREAK condition',
+    'BRKINT': 'map BREAK to SIGINTR',
+    'IGNPAR': 'ignore (discard) parity errors',
+    'PARMRK': 'mark parity and framing errors',
+    'INPCK': 'enable checking of parity errors',
+    'ISTRIP': 'strip 8th bit off chars',
+    'INLCR': 'map NL into CR',
+    'IGNCR': 'ignore CR',
+    'ICRNL': 'map CR to NL (ala CRMOD)',
+    'IXON': 'enable output flow control',
+    'IXOFF': 'enable input flow control',
+    'IXANY': 'any char will restart after stop',
+    'IMAXBEL': 'ring bell on input queue full',
+    'IUCLC': 'translate upper case to lower case',
+}
+
+BITMAP_OFLAG = {
+    'OPOST': 'enable following output processing',
+    'ONLCR': 'map NL to CR-NL (ala CRMOD)',
+    'OXTABS': 'expand tabs to spaces',
+    'ONOEOT': 'discard EOT\'s `^D\' on output)',
+    'OCRNL': 'map CR to NL',
+    'OLCUC': 'translate lower case to upper case',
+    'ONOCR': 'No CR output at column 0',
+    'ONLRET': 'NL performs CR function',
+}
+
+BITMAP_CFLAG = {
+    'CSIZE': 'character size mask',
+    'CS5': '5 bits (pseudo)',
+    'CS6': '6 bits',
+    'CS7': '7 bits',
+    'CS8': '8 bits',
+    'CSTOPB': 'send 2 stop bits',
+    'CREAD': 'enable receiver',
+    'PARENB': 'parity enable',
+    'PARODD': 'odd parity, else even',
+    'HUPCL': 'hang up on last close',
+    'CLOCAL': 'ignore modem status lines',
+    'CCTS_OFLOW': 'CTS flow control of output',
+    'CRTSCTS': 'same as CCTS_OFLOW',
+    'CRTS_IFLOW': 'RTS flow control of input',
+    'MDMBUF': 'flow control output via Carrier',
+}
+
+BITMAP_LFLAG = {
+    'ECHOKE': 'visual erase for line kill',
+    'ECHOE': 'visually erase chars',
+    'ECHO': 'enable echoing',
+    'ECHONL': 'echo NL even if ECHO is off',
+    'ECHOPRT': 'visual erase mode for hardcopy',
+    'ECHOCTL': 'echo control chars as ^(Char)',
+    'ISIG': 'enable signals INTR, QUIT, [D]SUSP',
+    'ICANON': 'canonicalize input lines',
+    'ALTWERASE': 'use alternate WERASE algorithm',
+    'IEXTEN': 'enable DISCARD and LNEXT',
+    'EXTPROC': 'external processing',
+    'TOSTOP': 'stop background jobs from output',
+    'FLUSHO': 'output being flushed (state)',
+    'NOKERNINFO': 'no kernel output from VSTATUS',
+    'PENDIN': 'XXX retype pending input (state)',
+    'NOFLSH': 'don\'t flush after interrupt',
+}
+
+CTLCHAR_INDEX = {
+    'VEOF': 'EOF',
+    'VEOL': 'EOL',
+    'VEOL2': 'EOL2',
+    'VERASE': 'ERASE',
+    'VWERASE': 'WERASE',
+    'VKILL': 'KILL',
+    'VREPRINT': 'REPRINT',
+    'VINTR': 'INTR',
+    'VQUIT': 'QUIT',
+    'VSUSP': 'SUSP',
+    'VDSUSP': 'DSUSP',
+    'VSTART': 'START',
+    'VSTOP': 'STOP',
+    'VLNEXT': 'LNEXT',
+    'VDISCARD': 'DISCARD',
+    'VMIN': '---',
+    'VTIME': '---',
+    'VSTATUS': 'STATUS',
+}
+
+
+def display_bitmask(kind, bitmap, value):
+    """ Display all matching bitmask values for ``value`` given ``bitmap``. """
+    col1_width = max(map(len, list(bitmap.keys()) + [kind]))
+    col2_width = 7
+    FMT = '{name:>{col1_width}} {value:>{col2_width}}   {description}'
+    print(FMT.format(name=kind,
+                     value='Value',
+                     description='Description',
+                     col1_width=col1_width,
+                     col2_width=col2_width))
+    print('{0} {1}   {2}'.format('-' * col1_width,
+                                 '-' * col2_width,
+                                 '-' * max(map(len, bitmap.values()))))
+    for flag_name, description in bitmap.items():
+        try:
+            bitmask = getattr(termios, flag_name)
+            bit_val = 'on' if bool(value & bitmask) else 'off'
+        except AttributeError:
+            bit_val = 'undef'
+        print(FMT.format(name=flag_name,
+                         value=bit_val,
+                         description=description,
+                         col1_width=col1_width,
+                         col2_width=col2_width))
+    print()
+
+
+def display_ctl_chars(index, cc):
+    """ Display all control character indicies, names, and values. """
+    title = 'Special Character'
+    col1_width = len(title)
+    col2_width = max(map(len, index.values()))
+    FMT = '{idx:<{col1_width}}   {name:<{col2_width}} {value}'
+    print('Special line Characters'.center(40).rstrip())
+    print(FMT.format(idx='Index',
+                     name='Name',
+                     value='Value',
+                     col1_width=col1_width,
+                     col2_width=col2_width))
+    print('{0}   {1} {2}'.format('-' * col1_width,
+                                 '-' * col2_width,
+                                 '-' * 10))
+    for index_name, name in index.items():
+        try:
+            index = getattr(termios, index_name)
+            value = cc[index]
+            if value == b'\xff':
+                value = '_POSIX_VDISABLE'
+            else:
+                value = repr(value)
+        except AttributeError:
+            value = 'undef'
+        print(FMT.format(idx=index_name,
+                         name=name,
+                         value=value,
+                         col1_width=col1_width,
+                         col2_width=col2_width))
+    print()
+
+
+def display_conf(kind, names, getter):
+    col1_width = max(map(len, names))
+    FMT = '{name:>{col1_width}}   {value}'
+    print(FMT.format(name=kind,
+                     value='value',
+                     col1_width=col1_width))
+    print('{0} {1}'.format('-' * col1_width, '-' * 27))
+    for name in names:
+        try:
+            value = getter(name)
+        except OSError as err:
+            value = err
+        print(FMT.format(name=name, value=value, col1_width=col1_width))
+    print()
+
+
+def main():
+    fd = sys.stdin.fileno()
+    locale.setlocale(locale.LC_ALL, '')
+    encoding = locale.getpreferredencoding()
+
+    print('os.isatty({0}) => {1}'.format(fd, os.isatty(fd)))
+    print('locale.getpreferredencoding() => {0}'.format(encoding))
+
+    display_conf(kind='pathconf',
+                 names=os.pathconf_names,
+                 getter=lambda name: os.fpathconf(fd, name))
+
+    try:
+        (iflag, oflag, cflag, lflag, ispeed, ospeed, cc
+         ) = termios.tcgetattr(fd)
+    except termios.error as err:
+        print('stdin is not a typewriter: {0}'.format(err))
+    else:
+        display_bitmask(kind='Input Mode',
+                        bitmap=BITMAP_IFLAG,
+                        value=iflag)
+        display_bitmask(kind='Output Mode',
+                        bitmap=BITMAP_OFLAG,
+                        value=oflag)
+        display_bitmask(kind='Control Mode',
+                        bitmap=BITMAP_CFLAG,
+                        value=cflag)
+        display_bitmask(kind='Local Mode',
+                        bitmap=BITMAP_LFLAG,
+                        value=lflag)
+        display_ctl_chars(index=CTLCHAR_INDEX,
+                          cc=cc)
+        try:
+            print('os.ttyname({0}) => {1}'.format(fd, os.ttyname(fd)))
+            print('os.ctermid() => {0}'.format(os.ctermid()))
+        except OSError as e:
+            # Travis fails on ttyname with errno 0 'Error'.
+            print("Error inspecting TTY: {0}".format(e))
+
+if __name__ == '__main__':
+    main()
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tools/teamcity-coverage-report.sh b/lldb/third_party/Python/module/pexpect-4.6/tools/teamcity-coverage-report.sh
new file mode 100755
index 00000000000..2e32241b7b7
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tools/teamcity-coverage-report.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+# This is to be executed by each individual OS test. It only
+# combines coverage files and reports locally to the given
+# TeamCity build configuration.
+set -e
+set -o pipefail
+[ -z ${TEMP} ] && TEMP=/tmp
+
+# combine all .coverage* files,
+coverage combine
+
+# create ascii report,
+report_file=$(mktemp $TEMP/coverage.XXXXX)
+coverage report --rcfile=`dirname $0`/../.coveragerc > "${report_file}" 2>/dev/null
+
+# Report Code Coverage for TeamCity, using 'Service Messages',
+# https://confluence.jetbrains.com/display/TCD8/How+To...#HowTo...-ImportcoverageresultsinTeamCity
+# https://confluence.jetbrains.com/display/TCD8/Custom+Chart#CustomChart-DefaultStatisticsValuesProvidedbyTeamCity
+total_no_lines=$(awk '/TOTAL/{printf("%s",$2)}' < "${report_file}")
+total_no_misses=$(awk '/TOTAL/{printf("%s",$3)}' < "${report_file}")
+total_no_covered=$((${total_no_lines} - ${total_no_misses}))
+echo "##teamcity[buildStatisticValue key='CodeCoverageAbsLTotal' value='""${total_no_lines}""']"
+echo "##teamcity[buildStatisticValue key='CodeCoverageAbsLCovered' value='""${total_no_covered}""']"
+
+# Display for human consumption and remove ascii file.
+cat "${report_file}"
+rm "${report_file}"
diff --git a/lldb/third_party/Python/module/pexpect-4.6/tools/teamcity-runtests.sh b/lldb/third_party/Python/module/pexpect-4.6/tools/teamcity-runtests.sh
new file mode 100755
index 00000000000..bcb28f78aa6
--- /dev/null
+++ b/lldb/third_party/Python/module/pexpect-4.6/tools/teamcity-runtests.sh
@@ -0,0 +1,64 @@
+#!/bin/bash
+#
+# This script assumes that the project 'ptyprocess' is
+# available in the parent of the project's folder.
+set -e
+set -o pipefail
+
+if [ -z $1 ]; then
+	echo "$0 (2.6|2.7|3.3|3.4)"
+	exit 1
+fi
+
+export PYTHONIOENCODING=UTF8
+export LANG=en_US.UTF-8
+
+pyversion=$1
+shift
+here=$(cd `dirname $0`; pwd)
+osrel=$(uname -s)
+venv=teamcity-pexpect
+venv_wrapper=$(which virtualenvwrapper.sh)
+
+if [ -z $venv_wrapper ]; then
+	echo "virtualenvwrapper.sh not found in PATH." >&2
+	exit 1
+fi
+
+. ${venv_wrapper}
+rmvirtualenv ${venv} || true
+mkvirtualenv -p `which python${pyversion}` ${venv} || true
+workon ${venv}
+
+# install ptyprocess
+cd $here/../../ptyprocess
+pip uninstall --yes ptyprocess || true
+python setup.py install
+
+# install all test requirements
+pip install --upgrade pytest-cov coverage coveralls pytest-capturelog
+
+# run tests
+cd $here/..
+ret=0
+py.test \
+	--cov pexpect \
+	--cov-config .coveragerc \
+	--junit-xml=results.${osrel}.py${pyversion}.xml \
+	--verbose \
+	--verbose \
+	"$@" || ret=$?
+
+if [ $ret -ne 0 ]; then
+	# we always exit 0, preferring instead the jUnit XML
+	# results to be the dominate cause of a failed build.
+	echo "py.test returned exit code ${ret}." >&2
+	echo "the build should detect and report these failing tests." >&2
+fi
+
+# combine all coverage to single file, report for this build,
+# then move into ./build-output/ as a unique artifact to allow
+# the final "Full build" step to combine and report to coveralls.io
+`dirname $0`/teamcity-coverage-report.sh
+mkdir -p build-output
+mv .coverage build-output/.coverage.${osrel}.py{$pyversion}.$RANDOM.$$