Embedded URL

(?xi)\b(                                         # Capture 1: entire matched URL  (?:      [a-z][\w-]+:                        # URL protocol and colon      (?:      /{1,3}                              # 1-3 slashes      |                                   #   -or-      [a-z0-9%]                           # Single letter or digit or '%'                                          # (Trying not to match e.g. ""URI::Escape"")      )      |                                   #   -or-      www\d{0,3}[.]                       # ""www."", ""www1."", ""www2."" … ""www999.""      |                                   #   or      [a-z0-9.\-]+[.][a-z]{2,4}/          # looks like domain name followed by a slash  )  (?:                                     # One or more:      [^\s()<>]+                          # Run of non-space, non-()<>      |                                   #   -or-      \(([^\s()<>]+|(\([^\s()<>]+\)))*\)  # balanced parens, up to 2 levels  )+  (?:                                     # End with:      \(([^\s()<>]+|(\([^\s()<>]+\)))*\)  # balanced parens, up to 2 levels      |                                   #   -or-      [^\s`!()\[\]{};:'"".,<>?«»“”‘’]     # not a space or one of these punct chars  ))

Extracts URLs embedded within other text (e.g. a paragraph of English text).

Mike Strobel
11/19/2010 13:51:16

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Embedded URL

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