Pass comments through kses. Props tsimmons. fixes #2130 #2167

git-svn-id: http://svn.automattic.com/wordpress/trunk@3417 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/kses.php

@@ -77,7 +77,7 @@ function wp_kses_split($string, $allowed_html, $allowed_protocols)
 # matches stray ">" characters.
 ###############################################################################
 {
-	return preg_replace('%(<'.# EITHER: <
+	return preg_replace('%(<!--.*?-->)|(<'.# EITHER: <
 	'[^>]*'.# things that aren't >
 	'(>|$)'.# > or end of string
 	'|>)%e', # OR: just a >
@@ -98,6 +98,10 @@ function wp_kses_split2($string, $allowed_html, $allowed_protocols)
 		return '&gt;';
 	# It matched a ">" character
 
+	if (preg_match('%^<!--.*-->$%', $string))
+		return $string;
+	# Allow HTML comments
+
 	if (!preg_match('%^<\s*(/\s*)?([a-zA-Z0-9]+)([^>]*)>?$%', $string, $matches))
 		return '';
 	# It's seriously malformed