class RDoc::RubyLex

def getc
  while @rests.empty?
    #      return nil unless buf_input
    @rests.push nil unless buf_input
  end
  c = @rests.shift
  if @here_header
    @here_readed.push c
  else
    @readed.push c
  end
  @seek += 1
  if c == "\n"
    @line_no += 1
    @char_no = 0
  else
    @char_no += 1
  end
  c
end