Am 3/21/2013 8:41, schrieb Johannes Sixt:
> Am 3/20/2013 23:59, schrieb David Aguilar:
>> I started digging in and the @worktree_files (aka @worktree above)
>> is populated from the output of "git diff --raw ...".
>>
>> Seeing the "output" filename in "diff --raw" implies that one of the
>> tests added "output" to the index somehow. I do not see that
>> happening anywhere, though, so I do not know how it would end up in
>> the @worktree array if it is not reported by "diff --raw".
>>
>>
>> My current understanding of how it could possibly be open twice:
>>
>> 1. via the >output redirect
>> 2. via the copy() perl code which is fed by @worktree
>>
>> So I'm confused. Why would we get different results on Windows?
>
> I tracked down the difference between Windows and Linux, and it is...
>
> for my $file (@worktree) {
> next if $symlinks && -l "$b/$file";
>
> ... this line in sub dir_diff. On Linux, we take the short-cut, but on
> Windows we proceed through the rest of the loop,
And that is likely by design. From the docs:
--symlinks
--no-symlinks
git difftool's default behavior is create symlinks to the working
tree when run in --dir-diff mode.
Specifying `--no-symlinks` instructs 'git difftool' to create
copies instead. `--no-symlinks` is the default on Windows.
And indeed, we have this initialization:
my %opts = (
...
symlinks => $^O ne 'cygwin' &&
$^O ne 'MSWin32' && $^O ne 'msys',
...
);
Can the --dir-diff tests case pass on Cygwin when neither --symlinks nor
--no-symlinks is passed?
Perhaps the right solution is this:
diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh
index c6d6b1c..19238f6 100755
--- a/t/t7800-difftool.sh
+++ b/t/t7800-difftool.sh
@@ -328,14 +328,16 @@ test_expect_success PERL 'setup change in subdirectory' '
git commit -m "modified both"
'
-test_expect_success PERL 'difftool -d' '
- git difftool -d --extcmd ls branch >output &&
+# passing --symlinks helps Cygwin, which defaults to --no-symlinks
+
+test_expect_success PERL,SYMLINKS 'difftool -d' '
+ git difftool -d --symlinks --extcmd ls branch >output &&
stdin_contains sub <output &&
stdin_contains file <output
'
-test_expect_success PERL 'difftool --dir-diff' '
- git difftool --dir-diff --extcmd ls branch >output &&
+test_expect_success PERL,SYMLINKS 'difftool --dir-diff' '
+ git difftool --dir-diff --symlinks --extcmd ls branch >output &&
stdin_contains sub <output &&
stdin_contains file <output
'
@@ -362,16 +364,16 @@ test_expect_success PERL,SYMLINKS 'difftool --dir-diff
--symlink without unstage
test_cmp actual expect
'
-test_expect_success PERL 'difftool --dir-diff ignores --prompt' '
- git difftool --dir-diff --prompt --extcmd ls branch >output &&
+test_expect_success PERL,SYMLINKS 'difftool --dir-diff ignores --prompt' '
+ git difftool --dir-diff --symlinks --prompt --extcmd ls branch >output
&&
stdin_contains sub <output &&
stdin_contains file <output
'
-test_expect_success PERL 'difftool --dir-diff from subdirectory' '
+test_expect_success PERL,SYMLINKS 'difftool --dir-diff from subdirectory' '
(
cd sub &&
- git difftool --dir-diff --extcmd ls branch >output &&
+ git difftool --dir-diff --symlinks --extcmd ls branch >output &&
stdin_contains sub <output &&
stdin_contains file <output
)
(Only tested on MinGW, which skips the tests.) I leave it to you
to write --no-symlinks tests.
-- Hannes
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