worktree: allow "-" short-hand for @{-1} in add command

Since `git worktree add` uses `git checkout` when `[<branch>]` is used,
and `git checkout -` is already supported, it makes sense to allow the
same shortcut in `git worktree add`.

Signed-off-by: Jordan DE GEA <jordan.de-gea@grenoble-inp.org>
Signed-off-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jordan DE GEA 2016-05-27 15:17:08 +02:00 committed by Junio C Hamano
parent f3913c2d03
commit 1a450e2fd1
3 changed files with 21 additions and 1 deletions

View File

@ -48,7 +48,8 @@ add <path> [<branch>]::
Create `<path>` and checkout `<branch>` into it. The new working directory
is linked to the current repository, sharing everything except working
directory specific files such as HEAD, index, etc.
directory specific files such as HEAD, index, etc. `-` may also be
specified as `<branch>`; it is synonymous with `@{-1}`.
+
If `<branch>` is omitted and neither `-b` nor `-B` nor `--detached` used,
then, as a convenience, a new branch based at HEAD is created automatically,

View File

@ -340,6 +340,9 @@ static int add(int ac, const char **av, const char *prefix)
path = prefix ? prefix_filename(prefix, strlen(prefix), av[0]) : av[0];
branch = ac < 2 ? "HEAD" : av[1];
if (!strcmp(branch, "-"))
branch = "@{-1}";
opts.force_new_branch = !!new_branch_force;
if (opts.force_new_branch) {
struct strbuf symref = STRBUF_INIT;

View File

@ -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 &&