# File lib_doc/rucy/cgi.rb, line 35
    def scan_cgi(script_name, request_path)
      Request.scan(request_path) do |cgi_script_name, path_info|
        if (cgi_script_name == script_name) then
          break
        end
        subpath = cgi_script_name[(script_name.length)..-1]
        cgi_local_path = File.expand_path(@base_dir + http2local(subpath))
        if (cgi_local_path !~ @local_path_check) then
          next
        end
        if (File.file? cgi_local_path) then
          return cgi_script_name, cgi_local_path
        end
      end
      raise HTTPError.new(404)  # Not Found
    end