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[PATCH] Documentation/merge-options: clarify --squash behavior

Add a note to the --squash option for git-merge to clarify its behavior
with respect to --commit. When --squash is supplied, 'option_commit' is
silently dropped. This can be surprising to a user who tries to override
the no-commit behavior of squash using --commit explicitly.

Signed-off-by: Vishal Verma <vishal.l.verma@xxxxxxxxx>

There may be an argument to make --commit 'just work' with squash, but
that might involve changing option_commit from OPT_BOOL to something
that can distinguish between the default, what's requested on the
command line, or the --no- version.

 Documentation/merge-options.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/merge-options.txt b/Documentation/merge-options.txt
index 92a7d936c1..0fd97720d8 100644
--- a/Documentation/merge-options.txt
+++ b/Documentation/merge-options.txt
@@ -95,6 +95,9 @@ merge.
 With --no-squash perform the merge and commit the result. This
 option can be used to override --squash.
+With --squash, a --commit option does not make sense, and will be ignored
+(HEAD will not be moved in spite of --commit).
 -s <strategy>::