Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx> writes:
> Current code does not update "symref" when -B is used. This string
> contains the new HEAD. Because it's empty "git worktree add -B" fails at
> symbolic-ref step.
>
> Because branch creation is already done before calling add_worktree(),
> -B is equivalent to -b from add_worktree() point of view. We do not need
> the special case for -B.
>
> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
> ---
> Complete patch.
>
> builtin/worktree.c | 4 +---
> t/t2025-worktree-add.sh | 8 ++++++++
> 2 files changed, 9 insertions(+), 3 deletions(-)
>
> diff --git a/builtin/worktree.c b/builtin/worktree.c
> index 475b958..6b9c946 100644
> --- a/builtin/worktree.c
> +++ b/builtin/worktree.c
> @@ -201,9 +201,7 @@ static int add_worktree(const char *path, const char *refname,
> die(_("'%s' already exists"), path);
>
> /* is 'refname' a branch or commit? */
> - if (opts->force_new_branch) /* definitely a branch */
> - ;
> - else if (!opts->detach && !strbuf_check_branch_ref(&symref, refname) &&
> + if (!opts->detach && !strbuf_check_branch_ref(&symref, refname) &&
> ref_exists(symref.buf)) { /* it's a branch */
Makes a reader wonder why the original thought it was OK to do
nothing when -B is given here.
What does symref.buf have at this point in the codeflow? Will it
always an existing branch? In what case can it be the name of a
branch that does not yet exist?
Thanks.
> if (!opts->force)
> die_if_checked_out(symref.buf);
> diff --git a/t/t2025-worktree-add.sh b/t/t2025-worktree-add.sh
> index 0a804da..a4d36c0 100755
> --- a/t/t2025-worktree-add.sh
> +++ b/t/t2025-worktree-add.sh
> @@ -193,6 +193,14 @@ test_expect_success '"add" -B/--detach mutually exclusive' '
> test_must_fail git worktree add -B poodle --detach bamboo master
> '
>
> +test_expect_success 'add -B' '
> + git worktree add -B poodle bamboo2 master^ &&
> + git -C bamboo2 symbolic-ref HEAD >actual &&
> + echo refs/heads/poodle >expected &&
> + test_cmp expected actual &&
> + test_cmp_rev master^ poodle
> +'
> +
> test_expect_success 'local clone from linked checkout' '
> git clone --local here here-clone &&
> ( cd here-clone && git fsck )
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