I'm pretty sure that DATA is only an alias of anther filehandle pointing to the current code...
Why do you think so? It seems such a thing doesn't exist: 
for ( values %main:: ) {
    my $io = *{$_}{IO} or next;
    my $name = *{$_}{NAME};

    if ( defined fileno $io ) {
        printf "fileno of %6s is %d\n", $name, fileno $io;
    }
    else {
        print "($name is a virtual handle)\n";
    }
}

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output: 
fileno of  stdin is 0
fileno of stdout is 1
fileno of  STDIN is 0
fileno of STDOUT is 1
fileno of stderr is 2
fileno of STDERR is 2
(ARGV is a virtual handle)

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and if we add __DATA__ to the file: 
fileno of STDERR is 2
fileno of  STDIN is 0
fileno of STDOUT is 1
fileno of stdout is 1
fileno of  stdin is 0
(ARGV is a virtual handle)
fileno of   DATA is 3
fileno of stderr is 2

[download]
So only __DATA__ is opened on fd 3... maybe there is some secret pro tech, but I suspect there isn't and then your best option is probably to just open __FILE__

In reply to Re: Introsepcting the current Perl file via DATA, even w/o DATA? by Anonymous Monk
in thread Introspecting the current Perl file via DATA, even w/o DATA? by LanX

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