Ticket #1597: 1597.diff

wp-includes/formatting.php

@@ +1 @@
+
 <?php
 /**
  * Main WordPress Formatting API.
@@ -993 +994 @@
         $stacksize = 0;
         $tagqueue = '';
         $newtext = '';
-        $single_tags = array('br', 'hr', 'img', 'input'); // Known single-entity/self-closing tags
+        $single_tags = array('area', 'base', 'basefont', 'br', 'col', 'command', 'embed', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param', 'source'); // Known single-entity/self-closing tags
         $nestable_tags = array('blockquote', 'div', 'span'); // Tags that can be immediately nested within themselves
 
         // WP bug fix for comments - in case you REALLY meant to type '< !--'
@@ -1041 +1042 @@
 
                         // Tag Cleaning
 
-                        // If self-closing or '', don't do anything.
-                        if ( substr($regex[2],-1) == '/' || $tag == '' ) {
+                        // If it's an empty tag "< >", do nothing
+                        if ( '' == $tag ) {
                                 // do nothing
                         }
+                        // ElseIf it presents itself as a self-closing tag...
+                        elseif ( substr($regex[2],-1) == '/' ) {
+                                // ...but it isn't a known single-entity self-closing tag, then don't let it be treated as such and
+                                // immediately close it with a closing tag (the tag will encapsulate no text as a result)
+                                if ( !in_array($tag, $single_tags) )
+                                        $regex[2] = substr($regex[2], 0, -1) . "></$tag";
+                        }
                         // ElseIf it's a known single-entity tag but it doesn't close itself, do so
                         elseif ( in_array($tag, $single_tags) ) {
                                 $regex[2] .= '/';
-                        } else {        // Push the tag onto the stack
+                        }
+                        // Else it's not a single-entity tag
+                        else {
                                 // If the top of the stack is the same as the tag we want to push, close previous tag
                                 if ( $stacksize > 0 && !in_array($tag, $nestable_tags) && $tagstack[$stacksize - 1] == $tag ) {
-                                        $tagqueue = '</' . array_pop ($tagstack) . '>';
+                                        $tagqueue = '</' . array_pop($tagstack) . '>';
                                         $stacksize--;
                                 }
-                                $stacksize = array_push ($tagstack, $tag);
+                                $stacksize = array_push($tagstack, $tag);
                         }
 
                         // Attributes
                         $attributes = $regex[2];
                         if( !empty($attributes) )
-                                $attributes = ' '.$attributes;
+                                $attributes = ' ' . $attributes;
 
                         $tag = '<' . $tag . $attributes . '>';
                         //If already queuing a close tag, then put this tag on, too