An alternative would be to construct the final regex from the parts:

my @parts = qr/this-stuff/;

if ($foo_needed) {
    push @parts, qr/more-stuff/i;
};

my $r = join "|", @parts;
$r = qr/$r/; # just to be explicit about what the string is supposed t
+o contain

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In reply to Re: Composing regex's dynamically by Corion
in thread Composing regex's dynamically by John M. Dlugosz

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