commit 3a7a60a6d51cd0686dcf7eceb36d1184be78931d
Author: Joel Pittet <joel@pittet.ca>
Date:   Thu Apr 3 22:59:58 2014 -0700

    fixes for duplicate attributes

diff --git a/core/modules/node/templates/node.html.twig b/core/modules/node/templates/node.html.twig
index 5bf5ad9..ae1162e 100644
--- a/core/modules/node/templates/node.html.twig
+++ b/core/modules/node/templates/node.html.twig
@@ -75,7 +75,7 @@
  * @ingroup themeable
  */
 #}
-<article id="node-{{ node.id }}" class="{{ attributes.class }} clearfix"{{ attributes }}>
+<article id="node-{{ node.id }}" class="{{ attributes.class }} clearfix"{{ attributes|without('id', 'class') }}>
 
   {{ title_prefix }}
   {% if not page %}
diff --git a/core/themes/bartik/templates/comment.html.twig b/core/themes/bartik/templates/comment.html.twig
index ea320b9..bbb7c5b 100644
--- a/core/themes/bartik/templates/comment.html.twig
+++ b/core/themes/bartik/templates/comment.html.twig
@@ -62,7 +62,7 @@
  * @see template_preprocess_comment()
  */
 #}
-<article class="{{ attributes.class }} clearfix"{{ attributes }} role="article">
+<article class="{{ attributes.class }} clearfix"{{ attributes|without('class') }} role="article">
 
   <header class="comment-header">
     <div class="attribution">
diff --git a/core/themes/bartik/templates/field--taxonomy-term-reference.html.twig b/core/themes/bartik/templates/field--taxonomy-term-reference.html.twig
index 59cd35e..fad1ed7 100644
--- a/core/themes/bartik/templates/field--taxonomy-term-reference.html.twig
+++ b/core/themes/bartik/templates/field--taxonomy-term-reference.html.twig
@@ -16,7 +16,7 @@
  * @see bartik_preprocess_field()
  */
 #}
-<div class="{{ attributes.class }} clearfix"{{ attributes }}>
+<div class="{{ attributes.class }} clearfix"{{ attributes|without('class') }}>
   <h3{{ label_attributes }}>{{ label }}: </h3>
   <ul class="links">
     {% for delta, item in items %}
diff --git a/core/themes/bartik/templates/node.html.twig b/core/themes/bartik/templates/node.html.twig
index 6afb107..2848899 100644
--- a/core/themes/bartik/templates/node.html.twig
+++ b/core/themes/bartik/templates/node.html.twig
@@ -69,7 +69,7 @@
  * @see template_preprocess_node()
  */
 #}
-<article id="node-{{ node.id }}" class="{{ attributes.class}} clearfix"{{ attributes }} role="article">
+<article id="node-{{ node.id }}" class="{{ attributes.class }} clearfix" role="article"{{ attributes|without('id', 'class', 'role') }}>
 
   <header>
     {{ title_prefix }}