[PATCH 12/13] 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: Jon Seymour <redacted>
---

 t/t6001-rev-list-merge-order.sh |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

eb702818ec4e0db40da78dd27623d33fdbaabe8b

diff --git a/t/t6001-rev-list-merge-order.sh b/t/t6001-rev-list-merge-order.sh
--- a/t/t6001-rev-list-merge-order.sh
+++ b/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
+
 #
 #
 
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