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add_listener( listener ) public

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# File lib/rexml/parsers/baseparser.rb, line 126
      def add_listener( listener )
        if !defined?(@listeners) or !@listeners
          @listeners = []
          instance_eval             alias :_old_pull :pull            def pull              event = _old_pull              @listeners.each do |listener|                listener.receive event              end              event            end
        end
        @listeners << listener
      end
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