That's not exactly how it works. Under use utf8;, quoted strings can already contain unicode characters:

#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };
use utf8;

my $string = 'Pérl Mönx';
say length $string; # 9, not 11
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See The "Unicode Bug" for details.

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
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