No, I'm the one who wasn't paying enough attention or testing his stuff X_X. I wasn't calculating the right length.

print("$_\n")
   for map  { $_->[0] }
       sort { $a->[1] cmp $b->[1] }
       map  { my $s = $_;
              $s =~ s/(?<![\[\d])(\d+)/
                 sprintf('%010u%s', length($1), $1)
              /eg;
              $s =~ s/(?<=\[)(\d+)/
                 sprintf('%010u', 4294967296-$1)
              /eg;
              [ $_, $s ]
            }
       do   { local $/;
              split ' ', <DATA>
            };
[download]

I tested it this time!