Ticket #1170: bug1170_functions-formatting.php

Index: wp-includes/functions-formatting.php
===================================================================
--- wp-includes/functions-formatting.php        (revision 2496)
+++ wp-includes/functions-formatting.php        (working copy)
@@ -446,7 +446,7 @@
                                $regex[2] .= '/';
                        } else {        // Push the tag onto the stack
                                // If the top of the stack is the same as the tag we want to push, close previous tag
-                               if (($stacksize > 0) && ($tag != 'div') && ($tagstack[$stacksize - 1] == $tag)) {
+                               if (($stacksize > 0) && ($tag != 'div') && ($tag != 'blockquote') && ($tagstack[$stacksize - 1] == $tag)) {
                                        $tagqueue = '</' . array_pop ($tagstack) . '>';
                                        $stacksize--;
                                }