# File lib/rbreadline.rb, line 5284
  def rl_forced_update_display()
    if (@visible_line)
      @visible_line.gsub!(/[^\x00]/,0.chr)
    end
    rl_on_new_line()
    @forced_display=true if !@forced_display
    send(@rl_redisplay_function)
    0
  end