/
(?(DEFINE)
    (?<protocol> (?<=^|[^a-z]) [a-z]+? : )
    (?<domain>   (?:[a-z\-]+\.)+[a-z\-]+ )
    (?<ip>       (?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?) )
    (?<port>     (?<!\s):\d+(?=\/|$|\s))
    (?<pathquery>[A-Za-z\d\!\*\(\)\;\:\@\&\=\+\$\,\/\?\#\[\]\%\{\}\|\\\^\`\~]+)
    (?<url>      (?&protocol) (?: (?:\/\/) (?: (?&domain) | (?&ip) ) (?&port)? )? (?&pathquery))
)
(?&url)
/
uxmg