Documentation/remote-helpers: explain capabilities first

diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index 9e69c8c926620f06343e64e7b3aa3e4ada5a6b69..cb6458d1c820bd131af4659fe878ff9406fbbcac 100755 (executable)
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -98,6 +98,18 @@ test_expect_success 'git branch -m q r/q should fail when r exists' '
        test_must_fail git branch -m q r/q
 '
 
+test_expect_success 'git branch -M foo bar should fail when bar is checked out' '
+       git branch bar &&
+       git checkout -b foo &&
+       test_must_fail git branch -M bar foo
+'
+
+test_expect_success 'git branch -M baz bam should succeed when baz is checked out' '
+       git checkout -b baz &&
+       git branch bam &&
+       git branch -M baz bam
+'
+
 mv .git/config .git/config-saved
 
 test_expect_success 'git branch -m q q2 without config should succeed' '