commit 72e7d3ad08bd7d8ffed553d4605c72a3bba70b8a
Author: Joel Pittet <joel@pittet.ca>
Date:   Tue Apr 29 20:52:11 2014 -0700

    fixes and doc block variables

diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackend.php b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
index 27e943d..3ae9eac 100644
--- a/core/lib/Drupal/Core/Cache/DatabaseBackend.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
@@ -53,9 +53,6 @@ public function __construct(Connection $connection, $bin) {
    * Implements Drupal\Core\Cache\CacheBackendInterface::get().
    */
   public function get($cid, $allow_invalid = FALSE) {
-    if ($this->bin == 'render') {
-      return NULL;
-    }
     $cids = array($cid);
     $cache = $this->getMultiple($cids, $allow_invalid);
     return reset($cache);
diff --git a/core/modules/menu_link/lib/Drupal/menu_link/MenuTree.php b/core/modules/menu_link/lib/Drupal/menu_link/MenuTree.php
index b390232..c9d6005 100644
--- a/core/modules/menu_link/lib/Drupal/menu_link/MenuTree.php
+++ b/core/modules/menu_link/lib/Drupal/menu_link/MenuTree.php
@@ -427,7 +427,6 @@ public function renderTree($tree, $level = 0) {
       $element['original_link'] = $data['link'];
       // Index using the link's unique mlid.
       $build[$data['link']['mlid']] = $element;
-
     }
 
     if (!$build) {
diff --git a/core/modules/system/templates/menu.html.twig b/core/modules/system/templates/menu.html.twig
index 0e96c3f..d173a86 100644
--- a/core/modules/system/templates/menu.html.twig
+++ b/core/modules/system/templates/menu.html.twig
@@ -2,9 +2,21 @@
 /**
  * @file
  * Default theme implementation to display a menu.
+ *
+ * Available variables:
+ * - menu_name: The machine name of the menu.
+ * - items: A nested list of menu items. Each menu item contains:
+ *   - attributes: HTML attributes for the menu item.
+ *   - below: The menu item child items.
+ *   - title: The menu link title.
+ *   - href: The menu link url.
+ *   - localized_options: Menu link localized options.
+ *
+ * @ingroup themeable
+ */
 #}
 {% import _self as menus %}
-<nav class="menu menu-{{ menu-name}}">
+<nav class="menu menu--{{ menu_name }}">
   {{ menus.menu_links(items, 0) }}
 </nav>
 
@@ -13,10 +25,10 @@
   {% if items %}
     <ul class="menu">
       {% for item in items %}
-        <li {{ item.attributes }}>
+        <li{{ item.attributes }}>
           {{ link_path(item.title, item.href, item.localized_options) }}
           {% if item.below %}
-            {{ menus.menu_links(item.below, menu_level+1) }}
+            {{ menus.menu_links(item.below, menu_level + 1) }}
           {% endif %}
         </li>
       {% endfor %}