completion: add comment for test_completion()

diff --git a/t/t4021-format-patch-numbered.sh b/t/t4021-format-patch-numbered.sh
index 390af2389f3b9559fcfebe1e21a24317562ab7af..886494b58f6739d40c2c34724064317b0d3be770 100755 (executable)
--- a/t/t4021-format-patch-numbered.sh
+++ b/t/t4021-format-patch-numbered.sh
@@ -86,9 +86,16 @@ test_expect_success 'format.numbered && --no-numbered' '
 
 '
 
+test_expect_success 'format.numbered && --keep-subject' '
+
+       git format-patch --keep-subject --stdout HEAD^ >patch4a &&
+       grep "^Subject: Third" patch4a
+
+'
+
 test_expect_success 'format.numbered = auto' '
 
-       git config format.numbered auto
+       git config format.numbered auto &&
        git format-patch --stdout HEAD~2 > patch5 &&
        test_numbered patch5
 
@@ -108,4 +115,10 @@ test_expect_success 'format.numbered = auto && --no-numbered' '
 
 '
 
+test_expect_success '--start-number && --numbered' '
+
+       git format-patch --start-number 3 --numbered --stdout HEAD~1 > patch8 &&
+       grep "^Subject: \[PATCH 3/3\]" patch8
+'
+
 test_done