Re: git diff-tree commit detail bug in 2.0.2 and 2.0.3

[Jeff King <peff@peff.net>]

On Mon, Jul 28, 2014 at 01:37:34PM -0400, Jeff King wrote:

> On Mon, Jul 28, 2014 at 10:32:45AM -0700, Junio C Hamano wrote:
> 
> > > Junio, we should consider a v2.0.4 with that series, I think. This is a
> > > pretty serious regression in diff-tree (I didn't even realize that the
> > > buffer-slab work went into the maint series; that may have been a little
> > > ambitious).
> > 
> > Or v2.0.4 without that series, which is how we usually do things,
> > but let me see if jk/alloc-commit-id is easily applicable there
> > first.
> 
> Yeah, I'm fine with a straight revert, too (I think it is fine to keep
> in master, though). I think jk/alloc-commit-id is built right on top of
> the original commit-slab topic, so it should be easy to do either way.
> 
> Thanks for dealing with it.

Whatever we do, perhaps it is worth applying the test below on top?

-- >8 --
Subject: t4013: test diff-tree's --stdin commit formatting

Once upon a time, git-log was just "rev-list | diff-tree",
and we did not bother to test it separately. These days git-log
is implemented internally, but we want to make sure that the
rev-list to diff-tree pipeline continues to function. Let's
add a basic sanity test.

Signed-off-by: Jeff King <peff@peff.net>
---
 t/t4013-diff-various.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 805b055..6ec6072 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -324,4 +324,14 @@ test_expect_success 'diff --cached -- file on unborn branch' '
 	test_cmp "$TEST_DIRECTORY/t4013/diff.diff_--cached_--_file0" result
 '
 
+test_expect_success 'diff-tree --stdin with log formatting' '
+	cat >expect <<-\EOF &&
+	Side
+	Third
+	Second
+	EOF
+	git rev-list master | git diff-tree --stdin --format=%s -s >actual &&
+	test_cmp expect actual
+'
+
 test_done
-- 
2.0.0.566.gfe3e6b2