# File lib/rack/recursive.rb, line 44
    def include(env, path)
      unless path.index(@script_name) == 0 && (path[@script_name.size] == ?/ ||
                                               path[@script_name.size].nil?)
        raise ArgumentError, "can only include below #{@script_name}, not #{path}"
      end

      env = env.merge("PATH_INFO" => path, "SCRIPT_NAME" => @script_name,
                      "REQUEST_METHOD" => "GET",
                      "CONTENT_LENGTH" => "0", "CONTENT_TYPE" => "",
                      "rack.input" => StringIO.new(""))
      @app.call(env)
    end