On Mon, Mar 17, 2014 at 10:05 AM, shawn wilson <ag4ve...@gmail.com> wrote:
> From Archive::Tar::File - what's '_' and where is it documented?
>
> sub _filetype {
> my $self = shift;
> my $file = shift;
>
> return unless defined $file;
>
> return SYMLINK if (-l $file); # Symlink
>
> return FILE if (-f _); # Plain file
>
> return DIR if (-d _); # Directory
>
> return FIFO if (-p _); # Named pipe
>
> return SOCKET if (-S _); # Socket
>
> return BLOCKDEV if (-b _); # Block special
>
> return CHARDEV if (-c _); # Character special
>
> ### shouldn't happen, this is when making archives, not reading ###
> return LONGLINK if ( $file eq LONGLINK_NAME );
>
> return UNKNOWN; # Something else (like what?)
>
> }
>
Try 'perldoc -f -X' or http://perldoc.perl.org/functions/-X.html
In particular, the section that starts (in 5.18 at least) with 'If any of
the file tests'
