    # File lib/merb-core/controller/abstract_controller.rb, line 402
        def _filter_condition_met?(rule)
          # Both:
          # * no :if or the if condition evaluates to true
          # * no :unless or the unless condition evaluates to false
          (!rule.key?(:if) || _evaluate_condition(rule[:if])) &&
          (!rule.key?(:unless) || ! _evaluate_condition(rule[:unless]))
        end