From edb3f704b969769ce20b2e1e7d4504a570e42231 Mon Sep 17 00:00:00 2001
From: Evan Prodromou <evan@status.net>
Date: Tue, 2 Aug 2011 14:03:12 -0400
Subject: [PATCH] correctly include UTF-8 alphanum chars in tags

---
 lib/util.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/util.php b/lib/util.php
index d8eee3d134..629d8326fd 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -1097,7 +1097,7 @@ function common_tag_link($tag)
 function common_canonical_tag($tag)
 {
   // only alphanum
-  $tag = preg_replace('/[^\pL\pN]/', '', $tag);
+  $tag = preg_replace('/[^\pL\pN]/u', '', $tag);
   $tag = mb_convert_case($tag, MB_CASE_LOWER, "UTF-8");
   $tag = substr($tag, 0, 64);
   return $tag;
-- 
2.39.5