This file is indexed.

/usr/share/perl5/Stream/Buffered/PerlIO.pm is in libstream-buffered-perl 0.2-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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package Stream::Buffered::PerlIO;
use strict;
use warnings;
use base 'Stream::Buffered';

sub new {
    my $class = shift;
    bless { buffer => '' }, $class;
}

sub print {
    my $self = shift;
    $self->{buffer} .= "@_";
}

sub size {
    my $self = shift;
    length $self->{buffer};
}

sub rewind {
    my $self = shift;
    my $buffer = $self->{buffer};
    open my $io, "<", \$buffer;
    bless $io, 'FileHandle'; # This makes $io work as FileHandle under 5.8, .10 and .11 :/
    return $io;
}

1;