Driver: clarify help string for "-###"

Someone recently wasted some time not realising that "-###" didn't
actually execute the commands it printed, and suggested a
documentation tweak.

Having made the same mistake myself on at least one occasion, I
sympathise. So here it is. Any kibitzing on an even better text
welcome.

llvm-svn: 199256

2 files changed, 2 insertions, 2 deletions

diff --git a/clang/docs/tools/clang.pod b/clang/docs/tools/clang.pod
index 1f3a3ec0ac6..e9ec2a60471 100644
--- a/clang/docs/tools/clang.pod
+++ b/clang/docs/tools/clang.pod
@@ -380,7 +380,7 @@ to the linker depending on the stage selection options).
 
 =item B<-###>
 
-Print the commands to run for this compilation.
+Print (but do not run) the commands to run for this compilation.
 
 =item B<--help>
 
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index 1c77df5d843..23036bf254a 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -198,7 +198,7 @@ def ccc_ : Joined<["-"], "ccc-">, Group<internal_Group>, Flags<[Unsupported]>;
 // Standard Options
 
 def _HASH_HASH_HASH : Flag<["-"], "###">, Flags<[DriverOption, CoreOption]>,
-    HelpText<"Print the commands to run for this compilation">;
+    HelpText<"Print (but do not run) the commands to run for this compilation">;
 def _DASH_DASH : Option<["--"], "", KIND_REMAINING_ARGS>,
     Flags<[DriverOption, CoreOption]>;
 def A : JoinedOrSeparate<["-"], "A">, Flags<[RenderJoined]>;