I dont like this regex. It seems to me to be more complicated (and thus less efficent) than the FAQ version with no added benefit. For instance why replace (?=\d|\.\d)\d*(\.\d*)? with all of this

   (?: \d*? )?                    
   (?: (?<=\d)\.? | \.?(?=\d) )
   (?: \d*?)?
   (?: \d
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(the last paren is unterminated deliberately)

--- demerphq
my friends call me, usually because I'm late....