in reply to REGEX:extract url/urls from aline

Your regex is unlikely to work as there is no reason at all an url must start with www or end with .com

Have a look at Regexp::Common and Regexp::Common::URI to see how it should be done.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James