commit 47927bfe228982e82743a5edd7cb96e5494460c8
Author: Shane Auckland <shane.auckland@gmail.com>
Date:   Wed Apr 10 21:29:36 2013 +0100

    939082-new_changes

diff --git a/core/modules/system/templates/status-messages.html.twig b/core/modules/system/templates/status-messages.html.twig
index 347b895..61ad587 100644
--- a/core/modules/system/templates/status-messages.html.twig
+++ b/core/modules/system/templates/status-messages.html.twig
@@ -10,6 +10,8 @@
  * Available variables:
  * - messages_display: List of messages to be displayed, grouped by type.
  * - status_headings: List of all status types.
+ * - display: (optional) Has a value of e.g. 'status' or 'error' when only
+ *   displaying messages of that type.
  *
  * @see template_preprocess()
  * @see template_preprocess_status_messages()
@@ -19,7 +21,7 @@
 #}
 {% for type, messages in messages_display %}
   <div class="messages {{ type }}">
-    {% if type in status_headings %}
+    {% if status_headings[type] %}
       <h2 class="element-invisible">{{ status_headings[type] }}</h2>
     {% endif %}
     {% if messages|length > 1 %}
@@ -33,3 +35,4 @@
     {% endif %}
   </div>
 {% endfor %}
+