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# XXX WRONG DON'T USE THIS
$re = qr/$re/i if $opt{i};
$re = qr/$re/m if $opt{m};
$re = qr/$re/s if $opt{s};
$re = qr/$re/x if $opt{x};

$re = "(?i:$re)" if $opt{i};
$re = "(?m:$re)" if $opt{m};
$re = "(?s:$re)" if $opt{s};
$re = "(?x:$re)" if $opt{x};