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open my $lookup, '<', $lookuptxtfile or die $!;
open my $new_lookup, '>', "$lookuptxtfile.new" or die $!;
...
}
close $new_lookup;
rename "$lookuptxtfile.new", $lookuptxtfile or die $!;

($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,