class RDoc::RubyLex

def token
  #      require "tracer"
  #      Tracer.on
  @prev_seek = @seek
  @prev_line_no = @line_no
  @prev_char_no = @char_no
  begin
    begin
      tk = @OP.match(self)
      @space_seen = tk.kind_of?(TkSPACE)
    rescue SyntaxError => e
      raise RDoc::Error, "syntax error: #{e.message}" if
        @exception_on_syntax_error
      tk = TkError.new(@seek, @line_no, @char_no)
    end
  end while @skip_space and tk.kind_of?(TkSPACE)
  if @readed_auto_clean_up
    get_readed
  end
  #      Tracer.off
  tk
end