On Tue, Mar 29, 2016 at 5:38 AM, Kazuki Yamaguchi <k@xxxxxx> wrote:
> When a branch is checked out by current working tree, deleting the
> branch is forbidden. However when the branch is checked out only by
> other working trees, deleting incorrectly succeeds.
> Use find_shared_symref() to check if the branch is in use, not just
> comparing with the current working tree's HEAD.
>
> Helped-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>
> Signed-off-by: Kazuki Yamaguchi <k@xxxxxx>
> ---
> Changes from v2:
> - Amended commit message
> - Dropped "which is" from error message
Thanks, this version addresses my previous review comments and is:
Reviewed-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>
> The previous versions of the patch are:
> - [v1] http://thread.gmane.org/gmane.comp.version-control.git/289413/focus=289932
> - [v2] http://thread.gmane.org/gmane.comp.version-control.git/289413/focus=290027
>
> builtin/branch.c | 22 ++++++++++++++--------
> t/t3200-branch.sh | 6 ++++++
> 2 files changed, 20 insertions(+), 8 deletions(-)
>
> diff --git a/builtin/branch.c b/builtin/branch.c
> index 7b45b6bd6b80..8885d9f8e2cd 100644
> --- a/builtin/branch.c
> +++ b/builtin/branch.c
> @@ -20,6 +20,7 @@
> #include "utf8.h"
> #include "wt-status.h"
> #include "ref-filter.h"
> +#include "worktree.h"
>
> static const char * const builtin_branch_usage[] = {
> N_("git branch [<options>] [-r | -a] [--merged | --no-merged]"),
> @@ -215,16 +216,21 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
> int flags = 0;
>
> strbuf_branchname(&bname, argv[i]);
> - if (kinds == FILTER_REFS_BRANCHES && !strcmp(head, bname.buf)) {
> - error(_("Cannot delete the branch '%s' "
> - "which you are currently on."), bname.buf);
> - ret = 1;
> - continue;
> - }
> -
> free(name);
> -
> name = mkpathdup(fmt, bname.buf);
> +
> + if (kinds == FILTER_REFS_BRANCHES) {
> + char *worktree = find_shared_symref("HEAD", name);
> + if (worktree) {
> + error(_("Cannot delete branch '%s' "
> + "checked out at '%s'"),
> + bname.buf, worktree);
> + free(worktree);
> + ret = 1;
> + continue;
> + }
> + }
> +
> target = resolve_ref_unsafe(name,
> RESOLVE_REF_READING
> | RESOLVE_REF_NO_RECURSE
> diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
> index a89724849065..508007fd3772 100755
> --- a/t/t3200-branch.sh
> +++ b/t/t3200-branch.sh
> @@ -403,6 +403,12 @@ test_expect_success 'test deleting branch without config' '
> test_i18ncmp expect actual
> '
>
> +test_expect_success 'deleting currently checked out branch fails' '
> + git worktree add -b my7 my7 &&
> + test_must_fail git -C my7 branch -d my7 &&
> + test_must_fail git branch -d my7
> +'
> +
> test_expect_success 'test --track without .fetch entries' '
> git branch --track my8 &&
> test "$(git config branch.my8.remote)" &&
> --
> 2.8.0.rc4.17.g02aa164.dirty
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