Test creation of new attributes from tal:attributes

lib/python/TAL/test/out1.xml

@@ -46,6 +46,7 @@
     </ul>
 
     <a href="http://python.org" z:attributes="href python:'http://python.org' ">python</a>
+    <a z:attributes="href python:'http://python.org' " href="http://python.org">python</a>
 
   </body>
 

lib/python/TAL/test/test1.xml

@@ -38,6 +38,7 @@ Title">Title</h1>
     </ul>
 
     <a href="foo" z:attributes="href python:'http://python.org' ">python</a>
+    <a z:attributes="href python:'http://python.org' ">python</a>
 
   </body>
 

lib/python/TAL/tests/out1.xml

@@ -46,6 +46,7 @@
     </ul>
 
     <a href="http://python.org" z:attributes="href python:'http://python.org' ">python</a>
+    <a z:attributes="href python:'http://python.org' " href="http://python.org">python</a>
 
   </body>
 

lib/python/TAL/tests/test1.xml

@@ -38,6 +38,7 @@ Title">Title</h1>
     </ul>
 
     <a href="foo" z:attributes="href python:'http://python.org' ">python</a>
+    <a z:attributes="href python:'http://python.org' ">python</a>
 
   </body>