Please provide option to match whole words for comment moderation

[jwz]

The "Comment Moderation" and "Comment Blacklist" fields are documented to match inside words. However, I find that less useful than the alternative, of matching whole words.

With each WP release, I have to modify the source to add \b to the regexp. It would be better if there was a preference option to say whether you want to match whole words or not. Alternately, there could be an option to just let me type real regexps into the field directly.

--- wp-includes/comment.php	14 Dec 2011 19:42:49 -0000	1.5
+++ wp-includes/comment.php	14 Dec 2011 19:43:31 -0000
@@ -69,9 +69,7 @@
 			// spam words don't break things:
 			$word = preg_quote($word, '#');
 
-			// jwz: match whole words only.
-			$pattern = "#\\b$word\\b#i";
-
+			$pattern = "#$word#i";
 			if ( preg_match($pattern, $author) ) return false;
 			if ( preg_match($pattern, $email) ) return false;
 			if ( preg_match($pattern, $url) ) return false;

[scribu]

Funny, this was just brought up a few days ago: #19495

Feel free to make your case there.