This is required by git-worktree.txt, stating that the main worktree is
the first line (especially in --porcelain mode when we can't just change
behavior at will).
There's only one case when get_worktrees() may skip main worktree, when
parse_ref() fails. Update the code so that we keep first item as main
worktree and return something sensible in this case:
- In user-friendly mode, since we're not constraint by anything,
returning "(error)" should do the job (we already show "(detached
HEAD)" which is not machine-friendly). Actually errors should be
printed on stderr by parse_ref() (*)
- In plumbing mode, we do not show neither 'bare', 'detached' or
'branch ...', which is possible by the format description if I read
it right.
Careful readers may realize that when the local variable "head_ref" in
get_main_worktree() is emptied, add_head_info() will do nothing to
wt->head_sha1. But that's ok because head_sha1 is zero-ized in the
previous patch.
(*) Well, it does not. But it's supposed to be a stop gap implementation
until we can reuse refs code to parse "ref: " stuff in HEAD, from
resolve_refs_unsafe(). Now may be the time since refs refactoring is
mostly done.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
builtin/worktree.c | 6 ++++--
t/t2027-worktree-list.sh | 21 +++++++++++++++++++++
worktree.c | 10 +++-------
3 files changed, 28 insertions(+), 9 deletions(-)
diff --git a/builtin/worktree.c b/builtin/worktree.c
index 8a654e4..b835b91 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -388,7 +388,7 @@ static void show_worktree_porcelain(struct worktree *wt)
printf("HEAD %s\n", sha1_to_hex(wt->head_sha1));
if (wt->is_detached)
printf("detached\n");
- else
+ else if (wt->head_ref)
printf("branch %s\n", wt->head_ref);
}
printf("\n");
@@ -408,8 +408,10 @@ static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
find_unique_abbrev(wt->head_sha1, DEFAULT_ABBREV));
if (wt->is_detached)
strbuf_addstr(&sb, "(detached HEAD)");
- else
+ else if (wt->head_ref)
strbuf_addf(&sb, "[%s]", shorten_unambiguous_ref(wt->head_ref, 0));
+ else
+ strbuf_addstr(&sb, "(error)");
}
printf("%s\n", sb.buf);
diff --git a/t/t2027-worktree-list.sh b/t/t2027-worktree-list.sh
index 1b1b65a..98b5f34 100755
--- a/t/t2027-worktree-list.sh
+++ b/t/t2027-worktree-list.sh
@@ -96,4 +96,25 @@ test_expect_success 'bare repo cleanup' '
rm -rf bare1
'
+test_expect_success 'broken main worktree still at the top' '
+ git init broken-main &&
+ (
+ cd broken-main &&
+ test_commit new &&
+ git worktree add linked &&
+ cat >expected <<-EOF &&
+ worktree $(pwd)
+ HEAD $_z40
+
+ EOF
+ cd linked &&
+ echo "worktree $(pwd)" >expected &&
+ echo "ref: .broken" >../.git/HEAD &&
+ git worktree list --porcelain | head -n 3 >actual &&
+ test_cmp ../expected actual &&
+ git worktree list | head -n 1 >actual.2 &&
+ grep -F "(error)" actual.2
+ )
+'
+
test_done
diff --git a/worktree.c b/worktree.c
index f7c1b5e..3145522 100644
--- a/worktree.c
+++ b/worktree.c
@@ -88,16 +88,13 @@ static struct worktree *get_main_worktree(void)
strbuf_addf(&path, "%s/HEAD", get_git_common_dir());
- if (parse_ref(path.buf, &head_ref, &is_detached) < 0)
- goto done;
-
worktree = xcalloc(1, sizeof(*worktree));
worktree->path = strbuf_detach(&worktree_path, NULL);
worktree->is_bare = is_bare;
worktree->is_detached = is_detached;
- add_head_info(&head_ref, worktree);
+ if (!parse_ref(path.buf, &head_ref, &is_detached))
+ add_head_info(&head_ref, worktree);
-done:
strbuf_release(&path);
strbuf_release(&worktree_path);
strbuf_release(&head_ref);
@@ -173,8 +170,7 @@ struct worktree **get_worktrees(void)
list = xmalloc(alloc * sizeof(struct worktree *));
- if ((list[counter] = get_main_worktree()))
- counter++;
+ list[counter++] = get_main_worktree();
strbuf_addf(&path, "%s/worktrees", get_git_common_dir());
dir = opendir(path.buf);
--
2.8.2.524.g6ff3d78