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Re: Should be a simple spaces/digits regex....but I'm turning grey! (?=)

by tye (Sage)
on Aug 05, 2014 at 02:14 UTC ( [id://1096230]=note: print w/replies, xml ) Need Help??

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    #           n-1 spaces or digits: vv vvvvv: last digit
(?:(?=\s[\s0-9]|[0-9]{2})[\s0-9]){15}[0-9]
#     (^^^^^^^^^^^^^^^^) ^^^^^^^: leading chars

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