#!/usr/bin/env perl use strict; use warnings; use Test::More tests => 2; my $str = ' Foo '; # uppercase breaks 2nd regex my $pattern = 'foo'; utf8::upgrade($str); utf8::upgrade($pattern); my $re = qr/$pattern/i; my $re_optional = qr/(?i:.?)$pattern/i; like( $str, $re, "re" ); like( $str, $re_optional, "re_optional" );