Ticket #27881: plugins_url.diff

src/wp-includes/link-template.php

@@ -2628 +2628 @@
  * @return string Plugins url link with optional path appended.
 */
 function plugins_url($path = '', $plugin = '') {
+        // str_replace() is to sanitize for Win32 installs
+        if ( ! empty( $path ) ) {
+                $path = preg_replace( '|/+|', '/', str_replace( '\\' ,'/', $path ) );
+        }
 
-        $mu_plugin_dir = WPMU_PLUGIN_DIR;
-        foreach ( array('path', 'plugin', 'mu_plugin_dir') as $var ) {
-                $$var = str_replace('\\' ,'/', $$var); // sanitize for Win32 installs
-                $$var = preg_replace('|/+|', '/', $$var);
+        if ( ! empty( $plugin ) ) {
+                $plugin = preg_replace( '|/+|', '/', str_replace( '\\' ,'/', $plugin ) );
         }
 
+        $mu_plugin_dir = preg_replace( '|/+|', '/', str_replace( '\\' ,'/', WPMU_PLUGIN_DIR ) );
+
         if ( !empty($plugin) && 0 === strpos($plugin, $mu_plugin_dir) )
                 $url = WPMU_PLUGIN_URL;
         else