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  1. or download this
    #!/usr/bin/perl -w
use strict;
...
 4 4 \
  4 4
5 5
  2. or download this
    skx@gold:~$ ./bug.pl 
LINE: '1 1'
...
LINE: ''
skx@gold:~$ perl -v|grep perl,
This is perl, v5.10.0 built for x86_64-linux-gnu-thread-multi
  3. or download this
    steve@skx:~$ ./bug.pl 
LINE: '1 1'
...
LINE: ''
steve@skx:~$ perl -v | grep perl,
This is perl, v5.8.8 built for i486-linux-gnu-thread-multi