--- rxvt-unicode/src/perl/readline	2006/02/06 06:14:08	1.7
+++ rxvt-unicode/src/perl/readline	2006/02/12 05:31:53	1.8
@@ -19,14 +19,20 @@
 sub on_button_press {
    my ($self, $event) = @_;
 
-   return
-      if $self->current_screen || $self->hidden_cursor || !$self->{enabled};
+   $self->current_screen || $self->hidden_cursor || !$self->{enabled}
+      and return;
+
+   my $mask = $self->ModLevel3Mask | $self->ModMetaMask
+            | urxvt::ShiftMask | urxvt::ControlMask;
+   
+   ($event->{state} & $mask) == urxvt::ShiftMask
+      or return;
 
    $termios->getattr ($self->pty_fd)
       or return;
 
-   return
-      if $termios->getlflag & &POSIX::ICANON;
+   $termios->getlflag & &POSIX::ICANON
+      and return;
 
    my ($row, $col) = $self->screen_cur;
    my $line = $self->line ($row);