/usr/lib/urxvt/perl/confirm-paste is in rxvt-unicode 9.20-1+b1.
This file is owned by root:root, with mode 0o644.
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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | #! perl
=head1 NAME
confirm-paste - ask for confirmation before pasting multiline text
=head1 DESCRIPTION
Displays a confirmation dialog when a paste containing at least a full
line is detected.
=cut
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
}
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