worktree: drop get_worktrees() special-purpose sorting option

Of all the clients of get_worktrees(), only "git worktree list" wants
the list sorted in a very specific way; other clients simply don't care
about the order. Rather than imbuing get_worktrees() with special
knowledge about how various clients -- now and in the future -- may want
the list sorted, drop the sorting capability altogether and make it the
client's responsibility to sort the list if needed.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/builtin/worktree.c b/builtin/worktree.c
index 4dec3951dc..c20e4ce089 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -694,6 +694,23 @@ static void measure_widths(struct worktree **wt, int *abbrev, int *maxlen)
 	}
 }
 
+static int pathcmp(const void *a_, const void *b_)
+{
+	const struct worktree *const *a = a_;
+	const struct worktree *const *b = b_;
+	return fspathcmp((*a)->path, (*b)->path);
+}
+
+static void pathsort(struct worktree **wt)
+{
+	int n = 0;
+	struct worktree **p = wt;
+
+	while (*p++)
+		n++;
+	QSORT(wt, n, pathcmp);
+}
+
 static int list(int ac, const char **av, const char *prefix)
 {
 	int porcelain = 0;
@@ -707,9 +724,12 @@ 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(GWT_SORT_LINKED);
+		struct worktree **worktrees = get_worktrees(0);
 		int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i;
 
+		/* sort worktrees by path but keep main worktree at top */
+		pathsort(worktrees + 1);
+
 		if (!porcelain)
 			measure_widths(worktrees, &abbrev, &path_maxlen);