# File lib/sass/tree/at_root_node.rb, line 57
      def exclude?(directive)
        if resolved_type == :with
          return false if resolved_value.include?('all')
          !resolved_value.include?(directive)
        else # resolved_type == :without
          return true if resolved_value.include?('all')
          resolved_value.include?(directive)
        end
      end