You could also allow for referencing the whole match as 0 with: 

    $str =~ $regex;
    my @matches = map substr( $str, $-[$_], $+[$_] - $-[$_] ), 0..$#-;

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In reply to Re^2: Double interpolation of captured substrings by Fletch
in thread Double interpolation of captured substrings by bobf

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