FromHost string
	ToHost   string
	Client   *http.Client
}

func EnableTestHooks(interceptors []Interceptor) error {
	if enableTestHooks {
		return errors.New("web: test hooks already enabled")
	}

	for _, t := range interceptors {
		if t.FromHost == "" {
			panic("EnableTestHooks: missing FromHost")
		}
		if t.ToHost == "" {
			panic("EnableTestHooks: missing ToHost")
		}
	}

	testInterceptors = interceptors

			web.Interceptor{Scheme: "http", FromHost: host, ToHost: httpURL.Host, Client: srv.HTTP.Client()},
			web.Interceptor{Scheme: "https", FromHost: host, ToHost: httpsURL.Host, Client: srv.HTTPS.Client()})
	}
	web.EnableTestHooks(interceptors)

	fmt.Fprintln(os.Stderr, "vcs-test.golang.org rerouted to "+srv.HTTP.URL)
	fmt.Fprintln(os.Stderr, "https://vcs-test.golang.org rerouted to "+srv.HTTPS.URL)

	return srv, nil
}

					web.Interceptor{Scheme: "http", FromHost: host, ToHost: vcsTestHost},
					web.Interceptor{Scheme: "https", FromHost: host, ToHost: vcsTestTLSHost, Client: vcsTestClient})
			}
			web.EnableTestHooks(interceptors)
		}

		cmdgo.Main()
		os.Exit(0)
	}
	os.Setenv("CMDGO_TEST_RUN_MAIN", "true")

	// $GO_GCFLAGS a compiler debug flag known to cmd/dist, make.bash, etc.