--- multilink_filter.module	2012-01-30 13:17:04.000000000 +0100
+++ multilink_filter.module-new	2012-11-12 08:25:20.000000000 +0100
@@ -201,6 +201,10 @@
   // Note: For simplicity, we only allow for relative paths such as /node/123.
   $formats['Generic HTML'] = array('/node/', '/(<a.*href=["\']?)(\/node\/)(\d+)(.*?>.*<\/a>)/');
 
+  // Add Localized Generic HTML format
+  // Note: This allows for locale prefixes, like in /en/node/123
+  $formats['Localized Generic HTML'] = array('/node/', '/(<a.*href=["\']?)\/[a-z]+(\/node\/)(\d+)(.*?>.*<\/a>)/');
+
   return $formats;
 }