Hi all,
I noticed that there an undocumented interaction of the --exit-code and
--ignore-space-change flags to git diff, when the diff only contains
file moves. Specifically, --ignore-space-change will cause git diff to
return a zero exit code in this situation.
I am not sure if the problem is with the command behavior, or with the
documentation.
STEPS TO REPRODUCE:
git init
echo foo > a.txt
git add a.txt
git commit -m "A"
git mv a.txt b.txt
git commit -m "B"
git diff --exit-code HEAD~1..HEAD # returns exit code 1
git diff --exit-code --ignore-space-change HEAD~1..HEAD # returns exit
status 0
EXPECTED BEHAVIOR:
Both of the last two commands above should return nonzero exit status.
WORKAROUND:
As one might expect --no-renames undoes this behavior, although it also
changes the diff output if not using --quiet:
git diff --exit-code --ignore-space-change --no-renames HEAD~1..HEAD #
returns exit status 1
OTHER INFO:
Tested this on git 2.39.2 and git 2.41.0, both on Linux.
Regards,
Ian Turner
