From http://ftp.gnu.org/pub/gnu/readline/readline-6.3-patches/readline63-001

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>

			   READLINE PATCH REPORT
			   =====================

Readline-Release: 6.3
Patch-ID: readline63-001

Bug-Reported-by:	Daan van Rossum <daan@flash.uchicago.edu>
Bug-Reference-ID:	<20140307072523.GA14250@flash.uchicago.edu>
Bug-Reference-URL:	

Bug-Description:

The `.' command in vi mode cannot undo multi-key commands beginning with
`c', `d', and `y' (command plus motion specifier).

Patch (apply with `patch -p0'):

*** a/readline-6.3/readline.c	2013-10-28 14:58:06.000000000 -0400
--- b/readline.c	2014-03-07 15:20:33.000000000 -0500
***************
*** 965,969 ****
    if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap &&
        key != ANYOTHERKEY &&
!       rl_key_sequence_length == 1 &&	/* XXX */
        _rl_vi_textmod_command (key))
      _rl_vi_set_last (key, rl_numeric_arg, rl_arg_sign);
--- 965,969 ----
    if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap &&
        key != ANYOTHERKEY &&
!       _rl_dispatching_keymap == vi_movement_keymap &&
        _rl_vi_textmod_command (key))
      _rl_vi_set_last (key, rl_numeric_arg, rl_arg_sign);
*** a/readline-6.3/patchlevel	2013-11-15 08:11:11.000000000 -0500
--- b/patchlevel	2014-03-21 08:28:40.000000000 -0400
***************
*** 1,3 ****
  # Do not edit -- exists only for use by patch
  
! 5
--- 1,3 ----
  # Do not edit -- exists only for use by patch
  
! 1