[PATCH] Add a t/t6001 test case for a --merge-order bug

This test case demonstrates a problem with --merge-order.

A
|
B
|\
C D
|/
E
|
F

git-rev-list --merge-order A B doesn't produce the expected output of

A
B
D
C
E
F

The problem is fixed by a subsequent patch.
Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

t/t6001-rev-list-merge-order.sh

@@ -438,6 +438,26 @@ a2
 a1
 EOF
 
+test_output_expect_success "--merge-order a4 l3" "git-rev-list --merge-order a4 l3" <<EOF
+l3
+a4
+c3
+c2
+c1
+b4
+b3
+b2
+b1
+a3
+a2
+a1
+a0
+l2
+l1
+l0
+root
+EOF
+
 #
 #