in reply to Re: Renaming all files in a directory -- perl -n -p and empty files oneliner
in thread Renaming all files in a directory

> note that perl -n and perl -p both skip empty files!

They don't, but that part of code is not exposed to us to insert our own code into. Or is it? 

#!/usr/bin/perl -n
use warnings;
use strict;

{   package File::ShowName;
    use Tie::Scalar;
    use parent -norequire => 'Tie::StdScalar';
    sub FETCH { print STDERR "Opening ${ $_[0] }.\n"; ${ $_[0] } }
}

BEGIN { tie $ARGV, 'File::ShowName' }

print;

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map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In Section Meditations