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It seems everyone is quite fond of the /i modifier, not to mention their CPU cycles. In colder climates, I find the following helps keep toes warmer, longer:

#!/usr/bin/env perl use 5.012; use warnings; use Carp; say insensitive('This is a test', qr/this is a test/) ? 'Match!' : 'No + match.'; sub insensitive { my ($cmp, $re) = @_; croak "expecting regexp, got " . ref $re unless 'Regexp' eq ref $r +e; carp "Insensitive use of uninitialized value" unless defined $cmp; my ($len, %seen) = length($cmp); croak "Not without bignum" if $len > 31; while (keys %seen <= 2**$len) { return 1 if $cmp =~ $re; substr($cmp, int rand $len, 1) ^= ' '; undef $seen{$cmp}; } return; }

Unicode support is left as an exercise to the reader.


In reply to Re: making regex case insensitive by rjt
in thread making regex case insensitive by Anonymous Monk

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