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Security Alert: Re: Re: Re: Trying to count the captures in a compiled regular expression

by ysth (Canon)
on May 03, 2004 at 06:01 UTC ( #349925=note: print w/ replies, xml ) Need Help??


in reply to Re: Re: Trying to count the captures in a compiled regular expression
in thread Trying to count the captures in a compiled regular expression

Security alert: that will run code in (??{ }) / (?p{ }). Maybe something like this instead?

$regex = qr:(??{print "look ma, no rm -rf /\n"}):; $captures = (() = ""=~/(|$regex)/) - 1;
Also, note that you have to add a () set and then subtract it from the count to be able to distinguish between 0 captures and 1 capture.


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