sub that sets $_

[holli]

Monks, in Re: Handling A File In Human-Compatible Chunks i proposed a module that can be used like

#iterate
while ( my $chunk = $reader->chunk )
{
    print "$chunk\n****************\n";
}

That works, but this

#iterate
while ( $reader->chunk )
{
    print "$_\n****************\n";
}

does not. $_ is not set. How can I achieve that behaviour?

Tx.