I could be way off base (usually am), but I thought the only way to untaint a variable was to use regex 'special' variables $1,$2, etc... Thus the following is what comes to mind: 
$filename =~ m{([\w./]+)}smx ? $filename = $1 : croak "Bah!";

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Ignorance is not bliss, educate me please.

In reply to Re: Passing taint checked scalars by Anonymous Monk
in thread Passing taint checked scalars by mnology

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