Index: src/wp-includes/functions.php
===================================================================
--- src/wp-includes/functions.php	(revision 30786)
+++ src/wp-includes/functions.php	(working copy)
@@ -464,7 +464,7 @@
 			. "(?:"
 				. "\([\w\d]+\)|"
 				. "(?:"
-					. "[^`!()\[\]{};:'\".,<>«»“”‘’\s]|"
+					. "[^`!()\[\]{}:'\".,<>«»“”‘’\s]|"
 					. "(?:[:]\d+)?/?"
 				. ")+"
 			. ")"
Index: tests/phpunit/tests/functions.php
===================================================================
--- tests/phpunit/tests/functions.php	(revision 30786)
+++ tests/phpunit/tests/functions.php	(working copy)
@@ -418,7 +418,9 @@
 			'http://việtnam.icom.museum',
 			'ftp://127.0.0.1/',
 			'http://www.woo.com/video?v=exvUH2qKLTU',
-			'http://taco.com?burrito=enchilada#guac'
+			'http://taco.com?burrito=enchilada#guac',
+			'https://stuff.com/?video=123&autoplay=true',
+			'http://example.com;'
 		);
 
 		$blob ="
@@ -481,6 +483,9 @@
 			http://www.woo.com/video?v=exvUH2qKLTU
 
 			http://taco.com?burrito=enchilada#guac
+			https://stuff.com/?video=123&amp;autoplay=true
+
+			http://example.com;
 		";
 
 		$urls = wp_extract_urls( $blob );