# File lib/rack/protection/escaped_params.rb, line 34
      def initialize(*)
        super

        modes       = Array options[:escape]
        @escaper    = options[:escaper]
        @html       = modes.include? :html
        @javascript = modes.include? :javascript
        @url        = modes.include? :url

        if @javascript and not @escaper.respond_to? :escape_javascript
          fail("Use EscapeUtils for JavaScript escaping.")
        end
      end