This file is indexed.

/usr/lib/urxvt/perl/confirm-paste is in rxvt-unicode 9.14-1.

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

The actual contents of the file can be viewed below.

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#! perl

sub msg {
   my ($self, $msg) = @_;

   $self->{overlay} = $self->overlay (0, -1, $self->ncol, 2, urxvt::OVERLAY_RSTYLE, 0);
   $self->{overlay}->set (0, 0, $msg);
}

sub on_tt_paste {
   my ($self, $str) = @_;

   my $count = ($str =~ tr/\012\015//);

   return unless $count;

   $self->{paste} = \$str;
   $self->msg ("Paste of $count lines, continue? (y/n)");
   my $preview = substr $self->locale_decode ($str), 0, $self->ncol;
   $preview =~ s/\n/\\n/g;
   $self->{overlay}->set (0, 1, $self->special_encode ($preview));
   $self->enable (key_press => \&key_press);

   1
}

sub leave {
   my ($self) = @_;

   $self->{paste} = undef;
   delete $self->{overlay};
   $self->disable ("key_press");
}

sub key_press {
   my ($self, $event, $keysym, $string) =  @_;

   if ($keysym == 121) { # y
      $self->tt_paste (${$self->{paste}});
      $self->leave;
   } elsif ($keysym == 110) { # n
      $self->leave;
   }

   1
}