completion: complete configuration sections and variable names for 'git -c'

diff --git a/t/t6006-rev-list-format.sh b/t/t6006-rev-list-format.sh
index ec42c2f7797c38f39bb3420402d975a94217d1f4..da113d975b160f3c34a4acda3d82a26d65f5268e 100755 (executable)
--- a/t/t6006-rev-list-format.sh
+++ b/t/t6006-rev-list-format.sh
@@ -185,6 +185,10 @@ test_expect_success 'basic colors' '
        test_cmp expect actual
 '
 
+test_expect_success '%S is not a placeholder for rev-list yet' '
+       git rev-list --format="%S" -1 master | grep "%S"
+'
+
 test_expect_success 'advanced colors' '
        cat >expect <<-EOF &&
        commit $head2