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Source Regular Expression ^(?:(?:http|https|ftp|telnet|gopher|ms\-help|file|notes)://)?(?:(?:[a-z][\w~%!&',;=\-\.$\(\)\*\+]*):.*@)?(?:(?:[a-z0-9][\w\-]*[a-z0-9]*\.)*(?:(?:(?:(?:[a-z0-9][\w\-]*[a-z0-9]*)(?:\.[a-z0-9]+)?)|(?:(?:(?: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]?)))(?::[0-9]+)?))?(?:(?:(?:/(?:[\w`~!$=;\-\+\.\^\(\)\|\{\}\[\]]|(?:%\d\d))+)*/(?:[\w`~!$=;\-\+\.\^\(\)\|\{\}\[\]]|(?:%\d\d))*)(?:\?[^#]+)?(?:#[a-z0-9]\w*)?)?$
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