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  1. or download this
    Q:\>perl -le "($x = 'foo') =~ /.(.)/g; print $1; $x = 'bar'; print $1"
    o
    a
    
  2. or download this
    $ perl -MData::Dumper -we'$Data::Dumper::Useqq = 1;
    ($x = "fou") =~ /.(..)/g; print Dumper $1; $x = "b"; print Dumper $1;
    ...
    $VAR1 = "ou";
    $VAR1 = "a\0";