No, it's not fixed width - these are supposed to be atomic coordinates and sometimes they're just printed wrong. I hope I understood your question although not sure... Brilliant, this was so easy! Well - it seems like it works, but need to use printf to be able to read the file to make sure, as it's very long. What am I doing wrong with printf here? It doesn't seem to make any difference. Am I using $_ wrong? 
   

#!/usr/bin/perl

use warnings;
use strict;

my $test;

my $output;

open my $INPUT, '<', "file.txt" or die $!;

while (<$INPUT>) {
chomp $_;

    s/(\d)-/$1 -/g;

    open $output, '>>', "test";
    printf $output ("%10s \n", "$_");
}

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In reply to Re^2: match digit, followed by hyphen, followed again by digit - then add whitespaces and replace in file by fasoli
in thread match digit, followed by hyphen, followed again by digit - then add whitespaces and replace in file by fasoli

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