Merge branch 'nd/worktree-list-fixup' into maint

The output from "git worktree list" was made in readdir() order,
and was unstable.

* nd/worktree-list-fixup:
  worktree list: keep the list sorted
  worktree.c: get_worktrees() takes a new flag argument
  get_worktrees() must return main worktree as first item even on error
  worktree: reorder an if statement
  worktree.c: zero new 'struct worktree' on allocation

2 files changed, 9 insertions, 7 deletions

diff --git a/builtin/branch.c b/builtin/branch.c
index 60cc5c8e8d..475707528a 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -531,7 +531,7 @@ static void print_ref_list(struct ref_filter *filter, struct ref_sorting *sortin
 
 static void reject_rebase_or_bisect_branch(const char *target)
 {
-	struct worktree **worktrees = get_worktrees();
+	struct worktree **worktrees = get_worktrees(0);
 	int i;
 
 	for (i = 0; worktrees[i]; i++) {
diff --git a/builtin/worktree.c b/builtin/worktree.c
index 5c4854d3e4..9a97e37a3f 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");
@@ -406,10 +406,12 @@ static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
 	else {
 		strbuf_addf(&sb, "%-*s ", abbrev_len,
 				find_unique_abbrev(wt->head_sha1, DEFAULT_ABBREV));
-		if (!wt->is_detached)
+		if (wt->is_detached)
+			strbuf_addstr(&sb, "(detached HEAD)");
+		else if (wt->head_ref)
 			strbuf_addf(&sb, "[%s]", shorten_unambiguous_ref(wt->head_ref, 0));
 		else
-			strbuf_addstr(&sb, "(detached HEAD)");
+			strbuf_addstr(&sb, "(error)");
 	}
 	printf("%s\n", sb.buf);
 
@@ -445,7 +447,7 @@ static int list(int ac, const char **av, const char *prefix)
 	if (ac)
 		usage_with_options(worktree_usage, options);
 	else {
-		struct worktree **worktrees = get_worktrees();
+		struct worktree **worktrees = get_worktrees(GWT_SORT_LINKED);
 		int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i;
 
 		if (!porcelain)
@@ -476,7 +478,7 @@ static int lock_worktree(int ac, const char **av, const char *prefix)
 	if (ac != 1)
 		usage_with_options(worktree_usage, options);
 
-	worktrees = get_worktrees();
+	worktrees = get_worktrees(0);
 	wt = find_worktree(worktrees, prefix, av[0]);
 	if (!wt)
 		die(_("'%s' is not a working tree"), av[0]);
@@ -509,7 +511,7 @@ static int unlock_worktree(int ac, const char **av, const char *prefix)
 	if (ac != 1)
 		usage_with_options(worktree_usage, options);
 
-	worktrees = get_worktrees();
+	worktrees = get_worktrees(0);
 	wt = find_worktree(worktrees, prefix, av[0]);
 	if (!wt)
 		die(_("'%s' is not a working tree"), av[0]);