code: func addArgsFromEnv(evar string, args *[]string) {
  	if e := os.Getenv(evar); e != "" {
  		for _, f := range strings.Fields(e) {
  			*args = append(*args, f)
  		}
  	}
  	fmt.Printf(">>> criu %v\n", *args)
  }
docs: // XXX debug support, remove when debugging done.