This works: 

#! perl -w
use strict;

my $fname = shift;
my $fh;
if( $fname eq '-test' ) {
    $fh = \*DATA;
}
elsif( $fname ) {
    open $fh, '<', $fname or die $!;
}
else {
   $fh = \*STDIN;
}

while( <$fh> ) {
    print;
}


__DATA__
my
test
data

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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Filehandle dilemma (DATA, STDIN, a file) by BrowserUk
in thread Filehandle dilemma (DATA, STDIN, a file) by roboticus

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