code: func InitFromSpec(spec string) string {
  	err := Global.ActivateSpec(spec)
  	if err != nil {
  		fmt.Fprintf(os.Stderr, "failed to activate logging spec: %s", err)
  	}
  	return DefaultLevel()
  }
docs: // InitFromSpec initializes the logging based on the supplied spec. It is
  // exposed externally so that consumers of the flogging package may parse their
  // own logging specification. The logging specification has the following form:
  //		[<logger>[,<logger>...]=]<level>[:[<logger>[,<logger>...]=]<logger>...]