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

[Junio C Hamano <gitster@pobox.com>]

Jeff King <peff@peff.net> writes:

> 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?

Yeah, thanks.  I think that is a good idea.  I was preparing a patch
to tuck your minimum reproduction at the end of 4202, but your version
and placement makes good sense.

> -- >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