From fc95ad105dfe6eef86c890ee7e6652c1970d4729 Mon Sep 17 00:00:00 2001
From: Andrew Nicols <andrew@nicols.co.uk>
Date: Fri, 21 Aug 2015 12:26:08 +0800
Subject: [PATCH] MDL-51170 core: Scheme section of URL should be case
 insensitive

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

diff --git a/lib/weblib.php b/lib/weblib.php
index d3dd8abb07d..28f75665961 100644
--- a/lib/weblib.php
+++ b/lib/weblib.php
@@ -2618,7 +2618,7 @@ function redirect($url, $message='', $delay=-1) {
     // Technically, HTTP/1.1 requires Location: header to contain the absolute path.
     // (In practice browsers accept relative paths - but still, might as well do it properly.)
     // This code turns relative into absolute.
-    if (!preg_match('|^[a-z]+:|', $url)) {
+    if (!preg_match('|^[a-z]+:|i', $url)) {
         // Get host name http://www.wherever.com.
         $hostpart = preg_replace('|^(.*?[^:/])/.*$|', '$1', $CFG->wwwroot);
         if (preg_match('|^/|', $url)) {