commit 16d1f5fa4bb7f53fe7c1b41ad38a269707242e0c
Author: Joel Pittet <joel@pittet.ca>
Date:   Sat Nov 16 17:16:20 2013 -0800

    fix variables not getting in the negotiaion configure form

diff --git a/core/modules/language/language.admin.inc b/core/modules/language/language.admin.inc
index b9e1f79..2bc7509 100644
--- a/core/modules/language/language.admin.inc
+++ b/core/modules/language/language.admin.inc
@@ -226,11 +226,15 @@ function template_preprocess_language_negotiation_configure_form(&$variables) {
       }
     }
 
+    // Store and unset configurable so it doesn't print twice in form children.
+    $configurable = isset($form[$type]['configurable']) ? $form[$type]['configurable'] : NULL;
+    unset($form[$type]['configurable']);
+
     $variables['language_types'][] = array(
       'type' => $type,
       'title' => $form[$type]['#title'],
       'description' => $form[$type]['#description'],
-      'configurable' => isset($form[$type]['configurable']) ? $form[$type]['configurable'] : NULL,
+      'configurable' => $configurable,
       'table' => $table,
       'children' => $form[$type],
     );
diff --git a/core/modules/language/language.module b/core/modules/language/language.module
index 1c3fb0c..d6f0086 100644
--- a/core/modules/language/language.module
+++ b/core/modules/language/language.module
@@ -111,6 +111,7 @@ function language_theme() {
   return array(
     'language_negotiation_configure_form' => array(
       'render element' => 'form',
+      'file' => 'language.admin.inc',
       'template' => 'language-negotiation-configure-form',
     ),
     'language_content_settings_table' => array(