http://www.perlmonks.org?node_id=634966


in reply to Scrubbing a string

You'll probably reject this because it uses string eval, but it is simple and effective. 

$ex = 'p!u-r-*e'; 
$ctl = 'pure';;
eval "\$ex =~ tr[$ctl][]cd;"; 
print $ex;;
pure

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