refs.c: add refs_shorten_unambiguous_ref()

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

refs.c

@@ -1169,7 +1169,8 @@ int update_ref(const char *msg, const char *refname,
 			       old_oid, flags, onerr);
 }
 
-char *shorten_unambiguous_ref(const char *refname, int strict)
+char *refs_shorten_unambiguous_ref(struct ref_store *refs,
+				   const char *refname, int strict)
 {
 	int i;
 	static char **scanf_fmts;
@@ -1247,7 +1248,7 @@ char *shorten_unambiguous_ref(const char *refname, int strict)
 			strbuf_reset(&resolved_buf);
 			strbuf_addf(&resolved_buf, rule,
 				    short_name_len, short_name);
-			if (ref_exists(resolved_buf.buf))
+			if (refs_ref_exists(refs, resolved_buf.buf))
 				break;
 		}
 
@@ -1266,6 +1267,12 @@ char *shorten_unambiguous_ref(const char *refname, int strict)
 	return xstrdup(refname);
 }
 
+char *shorten_unambiguous_ref(const char *refname, int strict)
+{
+	return refs_shorten_unambiguous_ref(get_main_ref_store(the_repository),
+					    refname, strict);
+}
+
 static struct string_list *hide_refs;
 
 int parse_hide_refs_config(const char *var, const char *value, const char *section)

refs.h

@@ -462,6 +462,8 @@ int check_refname_format(const char *refname, int flags);
 
 const char *prettify_refname(const char *refname);
 
+char *refs_shorten_unambiguous_ref(struct ref_store *refs,
+				   const char *refname, int strict);
 char *shorten_unambiguous_ref(const char *refname, int strict);
 
 /** rename ref, return 0 on success **/