Merge branch 'jg/dash-is-last-branch-in-worktree-add'

"git worktree add" learned that '-' can be used as a short-hand for
"@{-1}", the previous branch.

* jg/dash-is-last-branch-in-worktree-add:
  worktree: allow "-" short-hand for @{-1} in add command

1 files changed, 16 insertions, 0 deletions

diff --git a/t/t2025-worktree-add.sh b/t/t2025-worktree-add.sh
index 3a22fc55f..4bcc335a1 100755
--- a/t/t2025-worktree-add.sh
+++ b/t/t2025-worktree-add.sh
@@ -20,6 +20,22 @@ test_expect_success '"add" an existing empty worktree' '
 	git worktree add --detach existing_empty master
 '
 
+test_expect_success '"add" using shorthand - fails when no previous branch' '
+	test_must_fail git worktree add existing_short -
+'
+
+test_expect_success '"add" using - shorthand' '
+	git checkout -b newbranch &&
+	echo hello >myworld &&
+	git add myworld &&
+	git commit -m myworld &&
+	git checkout master &&
+	git worktree add short-hand - &&
+	echo refs/heads/newbranch >expect &&
+	git -C short-hand rev-parse --symbolic-full-name HEAD >actual &&
+	test_cmp expect actual
+'
+
 test_expect_success '"add" refuses to checkout locked branch' '
 	test_must_fail git worktree add zere master &&
 	! test -d zere &&