I am wondering is there an easier way to force perl treat \w and \d metacharacters as ASCII only, even for Unicode strings with UTF-8 bit set? Needs to work on all perls starting from 5.8.x 
perl -e 'print 3+6 if "\x{424}" =~ /\w/'
9

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Or the only possibility is to use [0-9] instead of \d etc.. ?

My code works with Unicode, but, at the same time, I wan't to be able to do validation/security checks and often (very often!) I need \d to match only 0-9 digits

/a /aa and use re '/a' modifier produce syntax errors on early versions of Perl

In reply to Force ASCII regexp for all perls 5.8+ by vsespb

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