Only taint casereader if case size is unknown.

[pspp] / tests / formats / num-out-decmp.pl

use warnings;
use strict;

my (@line);
while (<>) {
    if (my ($n) = /^\*(\d+)$/) {
        for (1...$n) {
            $line[1]++;
            $line[3] = " $line[3]";
            print ' ', join ('', @line), "\n";
        }
    } elsif (my ($suffix) = /^\$(.*)$/) {
        for my $c (split ('', $suffix)) {
            $line[1]++;
            $line[4] .= $c;
            print ' ', join ('', @line), "\n";
        }
    } elsif (my ($prefix) = /^\^(.*)$/) {
        for my $c (split ('', $prefix)) {
            $line[1]++;
            $line[4] = "$c$line[4]";
            print ' ', join ('', @line), "\n";
        }
    } else {
        @line = /^([A-Z]+)(\d+)([^"]+")( *)([^%"]*)(%?")$/;
        print " $_";
    }
}