Apparently the ‘ character breaks url tags, both explicit and the implied ones.
[url]http://news.yahoo.com/gop-rep--peter-king--‘ted-cruz-should-be-blamed’-if-government-shut-downs-223751600.html[/url]
http://news.yahoo.com/gop-rep--peter-king--‘ted-cruz-should-be-blamed’-if-government-shut-downs-223751600.html
See: http://forums.goodgamery.com/viewtopic.php?f=22&t=7019&p=1313311#p1313311