Index: Language.php
===================================================================
--- Language.php	(revision 41640)
+++ Language.php	(working copy)
@@ -1813,7 +1813,8 @@
 	  * </code>
 	  *
 	  * See LanguageGu.php for the Gujarati implementation and
-	  * LanguageIs.php for the , => . and . => , implementation.
+	  * $separatorTransformTable on MessageIs.php for
+	  * the , => . and . => , implementation.
 	  *
 	  * @todo check if it's viable to use localeconv() for the decimal
 	  *       separator thing.
Index: messages/MessagesEu.php
===================================================================
--- messages/MessagesEu.php	(revision 41640)
+++ messages/MessagesEu.php	(working copy)
@@ -40,6 +40,8 @@
 	NS_CATEGORY_TALK  => 'Kategoria_eztabaida',
 );
 
+$separatorTransformTable = array(',' => '.', '.' => ',' ); /* Bug 15717 */
+
 $messages = array(
 # User preference toggles
 'tog-underline'               => 'Loturak azpimarratu:',