notes: make expand_notes_ref globally accessible

This function is useful for other commands besides "git
notes" which want to let users refer to notes by their
shorthand name.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/notes.c b/notes.c
index a013c1bc63..f6b9b6a72a 100644
--- a/notes.c
+++ b/notes.c
@@ -1285,3 +1285,13 @@ int copy_note(struct notes_tree *t,
 
 	return 0;
 }
+
+void expand_notes_ref(struct strbuf *sb)
+{
+	if (!prefixcmp(sb->buf, "refs/notes/"))
+		return; /* we're happy */
+	else if (!prefixcmp(sb->buf, "notes/"))
+		strbuf_insert(sb, 0, "refs/", 5);
+	else
+		strbuf_insert(sb, 0, "refs/notes/", 11);
+}