commit 6d3c64005f5e77fb68bdc13da577261fbd0017cf
Author: Thomas Lattimore <lattimorethomas@gmail.com>
Date:   Thu May 23 17:23:52 2013 -0700

    Removing the unnecessary work within bartik_preprocess_node() and adjust the comment as requested.

diff --git a/core/themes/bartik/bartik.theme b/core/themes/bartik/bartik.theme
index 6bdd8e2..3815f13 100644
--- a/core/themes/bartik/bartik.theme
+++ b/core/themes/bartik/bartik.theme
@@ -114,17 +114,11 @@ function bartik_process_maintenance_page(&$variables) {
  * Implements hook_preprocess_HOOK() for node.html.twig.
  */
 function bartik_preprocess_node(&$variables) {
-  // Operate on a copy of links in order to preserve the original.
-  $links = $variables['content']['links'];
-
-  // Remove the "Add new comment" link on the teaser page or if the comment
-  // form is being displayed on the same page.
+  // Remove the "Add new comment" link on teasers or when the comment form is
+  // displayed on the page.
   if ($variables['teaser'] || !empty($variables['content']['comments']['comment_form'])) {
-    unset($links['comment']['#links']['comment-add']);
+    unset($variables['content']['links']['comment']['#links']['comment-add']);
   }
-
-  // Render links to test if there is content present to display.
-  $variables['links'] = drupal_render($links);
 }
 
 /**
diff --git a/core/themes/bartik/templates/node.html.twig b/core/themes/bartik/templates/node.html.twig
index 09ec0a3..802092f 100644
--- a/core/themes/bartik/templates/node.html.twig
+++ b/core/themes/bartik/templates/node.html.twig
@@ -100,9 +100,9 @@
     {{ content }}
   </div>
 
-  {% if links %}
+  {% if content.links %}
     <footer class="link-wrapper">
-      {{ links }}
+      {{ content.links }}
     </footer>
   {% endif %}