code: func FindScpLikeComponents(url string) (user, host, port, path string) {
  	m := scpLikeUrlRegExp.FindStringSubmatch(url)
  	return m[1], m[2], m[3], m[4]
  }
docs: // FindScpLikeComponents returns the user, host, port and path of the
  // given SCP-like URL.