> On Oct 9, 2016, at 17:15, Jeremy Huddleston Sequoia <jeremyhu@freedesktop.org> wrote:
> 
> Hi Thomas,
> 
> I wanted to let you know that this patch of yours, which landed in git 2.10.1, introduced some test failures, seen on macOS.
> 
> Let me know if you need any additional information to track these down.
> 
> Thanks,
> Jeremy
> 
> not ok 40 - git add --chmod=[+-]x changes index with already added file
> #	
> #		echo foo >foo3 &&
> #		git add foo3 &&
> #		git add --chmod=+x foo3 &&
> #		test_mode_in_index 100755 foo3 &&
> #		echo foo >xfoo3 &&
> #		chmod 755 xfoo3 &&
> #		git add xfoo3 &&
> #		git add --chmod=-x xfoo3 &&
> #		test_mode_in_index 100644 xfoo3
> #	
> 
> commit 610d55af0f082f6b866dc858e144c03d8ed4424c
> Author: Thomas Gummerer <t.gummerer@gmail.com>
> Date:   Wed Sep 14 22:07:47 2016 +0100
> 
>    add: modify already added files when --chmod is given
> 
>    When the chmod option was added to git add, it was hooked up to the diff
>    machinery, meaning that it only works when the version in the index
>    differs from the version on disk.
> 
>    As the option was supposed to mirror the chmod option in update-index,
>    which always changes the mode in the index, regardless of the status of
>    the file, make sure the option behaves the same way in git add.
> 
>    Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
>    Signed-off-by: Junio C Hamano <gitster@pobox.com>


This failure looks odd.  I'll dig into it a bit more as it looks like something odd is going on here...

expecting success: 
	echo foo >foo3 &&
	git add foo3 &&
	git add --chmod=+x foo3 &&
	test_mode_in_index 100755 foo3 &&
	echo foo >xfoo3 &&
	chmod 755 xfoo3 &&
	git add xfoo3 &&
	git add --chmod=-x xfoo3 &&
	test_mode_in_index 100644 xfoo3

pass
cannot chmod 'xfoo3'fail
120000 c5c4ca97a3a080c32920941b665e94a997901491 0	xfoo3
not ok 40 - git add --chmod=[+-]x changes index with already added file
#	
#		echo foo >foo3 &&
#		git add foo3 &&
#		git add --chmod=+x foo3 &&
#		test_mode_in_index 100755 foo3 &&
#		echo foo >xfoo3 &&
#		chmod 755 xfoo3 &&
#		git add xfoo3 &&
#		git add --chmod=-x xfoo3 &&
#		test_mode_in_index 100644 xfoo3
#