func shouldVisit(rel string, mode Mode, updateRels map[string]bool) bool {
	if mode != UpdateDirsMode {
		return true
	}
	_, ok := updateRels[rel]
	return ok
}
func shouldVisit(rel string, mode Mode, updateRels map[string]bool) bool {
	if mode != UpdateDirsMode {
		return true
	}
	_, ok := updateRels[rel]
	return ok
}
func shouldVisit ( rel string , mode Mode , updateRels map [ string ] bool ) bool { if mode != UpdateDirsMode { return true } _ , ok := updateRels [ rel ] return ok }
// shouldVisit returns true if Walk should visit the subdirectory rel.
shouldVisit returns true if Walk should visit the subdirectory rel .