diff -r 9e9334417dbc -r 31d226269d2f includes/render.php
--- a/includes/render.php	Mon Mar 29 01:47:31 2010 -0400
+++ b/includes/render.php	Tue Mar 30 11:34:56 2010 -0400
@@ -574,7 +574,7 @@
 	
 	public static function reverse_process_headings($text)
 	{
-		if ( !preg_match_all('|^<h([1-6])(?: id="toc[0-9]+")?>(.*?)</h\\1>$|m', $text, $matches) )
+		if ( !preg_match_all('|^<h([1-6])(?: id="head:[\w\.\/:;\(\)@\[\]=_-]+")?>(.*?)</h\\1>$|m', $text, $matches) )
 			return $text;
 		
 		foreach ( $matches[0] as $i => $match )