level_notifier=

# File lib/irb/notifier.rb, line 95
      def level_notifier=(value)
        case value
        when AbstructNotifier
          @level_notifier = value
        when Integer
          l = @notifiers[value]
          Notifier.Raise ErrUndefinedNotifer, value unless l
          @level_notifier = l
        else
          Notifier.Raise ErrUnrecognizedLevel, value unless l
        end
      end