[PATCH] t4013: diff-tree --stdin with pathspec

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

Add a test that feeds "diff-tree --stdin <pathspec>" with list of
revisions, in a way very similar to how "gitk" drives it.  If we had
such a test, we would have caught the recent regression.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 * On top of that "revert" change.

 t/t4013-diff-various.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 750aee17ea..628b01f355 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -542,6 +542,20 @@ test_expect_success 'diff-tree --stdin with log formatting' '
 	test_cmp expect actual
 '
 
+test_expect_success 'diff-tree --stdin with pathspec' '
+	cat >expect <<-EOF &&
+	Third
+
+	dir/sub
+	Second
+
+	dir/sub
+	EOF
+	git rev-list master^ |
+	git diff-tree -r --stdin --name-only --format=%s dir >actual &&
+	test_cmp expect actual
+'
+
 test_expect_success 'diff -I<regex>: setup' '
 	git checkout master &&
 	test_seq 50 >file0 &&
-- 
2.36.0-200-g3c19986797