section

# File lib/net/imap.rb, line 2744
      def section
        str = String.new
        token = match(T_LBRA)
        str.concat(token.value)
        token = match(T_ATOM, T_NUMBER, T_RBRA)
        if token.symbol == T_RBRA
          str.concat(token.value)
          return str
        end
        str.concat(token.value)
        token = lookahead
        if token.symbol == T_SPACE
          shift_token
          str.concat(token.value)
          token = match(T_LPAR)
          str.concat(token.value)
          while true
            token = lookahead
            case token.symbol
            when T_RPAR
              str.concat(token.value)
              shift_token
              break
            when T_SPACE
              shift_token
              str.concat(token.value)
            end
            str.concat(format_string(astring))
          end
        end
        token = match(T_RBRA)
        str.concat(token.value)
        return str
      end