From 9f509643f032ddab67aca484de1386b499c054b3 Mon Sep 17 00:00:00 2001
From: Dongsheng Cai <unoter@gmail.com>
Date: Fri, 18 Dec 2009 07:17:46 +0000
Subject: [PATCH] "MDL-21141, fixed a regression introduced by last commit,
 thanks for testing, jerome"

---
 lib/ajax/ajaxlib.php | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/lib/ajax/ajaxlib.php b/lib/ajax/ajaxlib.php
index 6502d11608..35b3dabc77 100644
--- a/lib/ajax/ajaxlib.php
+++ b/lib/ajax/ajaxlib.php
@@ -185,21 +185,22 @@ class page_requirements_manager {
      */
     public function css($stylesheet, $fullurl = false) {
         global $CFG;
+        if (!$fullurl) {
+            if (!file_exists($CFG->dirroot . '/' . strtok($stylesheet, '?'))) {
+                throw new coding_exception('Attempt to require a CSS file that does not exist.', $stylesheet);
+            }
+            $url = $CFG->httpswwwroot . '/' . $stylesheet;
+        } else {
+            $url = $stylesheet;
+        }
 
         if (isset($this->linkedrequirements[$url])) {
+            // already required, ignore it
             return;
         } else {
             if ($this->headdone) {
                 throw new coding_exception('Cannot require a CSS file after &lt;head> has been printed.', $stylesheet);
             }
-            if (!$fullurl) {
-                if (!file_exists($CFG->dirroot . '/' . strtok($stylesheet, '?'))) {
-                    throw new coding_exception('Attempt to require a CSS file that does not exist.', $stylesheet);
-                }
-                $url = $CFG->httpswwwroot . '/' . $stylesheet;
-            } else {
-                $url = $stylesheet;
-            }
             $this->linkedrequirements[$url] = new required_css($this, $url);
         }
     }
-- 
2.39.5