id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
23587	url_to_postid() needs to use # or @ for preg_match start/end character	coreygilmore		"[source:/tags/3.5.1/wp-includes/rewrite.php@23479#L344 url_to_postid()] uses ! for the start/end characters of regular expressions, which doesn't allow you to use expressions containing `!`, like `(?!negativelookahead)`.

The solution is to use `preg_match(""#^$match#"", $request_match, $matches)` or `preg_match(""@^$match@"", $request_match, $matches)`


See also: #7486 and [source:/tags/3.5.1/wp-includes/class-wp.php#L204 WP::parse_request()]"	defect (bug)	new	normal	3.6	Rewrite Rules	1.5.2	normal		has-patch	stevenkword