class RDoc::Parser::Ruby

def parse_symbol_arg(no = nil)
  args = []
  skip_tkspace_comment
  case tk = get_tk
  when TkLPAREN
    loop do
      skip_tkspace_comment
      if tk1 = parse_symbol_in_arg
        args.push tk1
        break if no and args.size >= no
      end
      skip_tkspace_comment
      case tk2 = get_tk
      when TkRPAREN
        break
      when TkCOMMA
      else
        warn("unexpected token: '#{tk2.inspect}'") if $DEBUG_RDOC
        break
      end
    end
  else
    unget_tk tk
    if tk = parse_symbol_in_arg
      args.push tk
      return args if no and args.size >= no
    end
    loop do
      skip_tkspace false
      tk1 = get_tk
      unless TkCOMMA === tk1 then
        unget_tk tk1
        break
      end
      skip_tkspace_comment
      if tk = parse_symbol_in_arg
        args.push tk
        break if no and args.size >= no
      end
    end
  end
  args
end