[2.1.5] [MFH] Percent encode query and hash, and lazy update with attr validator

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/php4@1787 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/AttrValidator.php

@@ -40,8 +40,8 @@ class HTMLPurifier_AttrValidator
         // DEFINITION CALL
         $d_defs = $definition->info_global_attr;
         
-        // reference attributes for easy manipulation
-        $attr =& $token->attr;
+        // don't update token until the very end, to ensure an atomic update
+        $attr = $token->attr;
         
         // do global transformations (pre)
         // nothing currently utilizes this
@@ -136,6 +136,8 @@ class HTMLPurifier_AttrValidator
             if ($e && ($attr != $o)) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
         }
         
+        $token->attr = $attr;
+        
         // destroy CurrentToken if we made it ourselves
         if (!$current_token) $context->destroy('CurrentToken');