# File lib/rbreadline.rb, line 5606
  def _rl_insert_next(count)
    rl_setstate(RL_STATE_MOREINPUT)
    c = rl_read_key()
    rl_unsetstate(RL_STATE_MOREINPUT)

    if c.class == Fixnum && c < 0
      return -1
    end

    _rl_insert_char(count, c)
  end