func shouldUpdate(rel string, mode Mode, updateParent bool, updateRels map[string]bool) bool {
	return mode == VisitAllUpdateSubdirsMode && updateParent || updateRels[rel]
}
func shouldUpdate(rel string, mode Mode, updateParent bool, updateRels map[string]bool) bool {
	return mode == VisitAllUpdateSubdirsMode && updateParent || updateRels[rel]
}
func shouldUpdate ( rel string , mode Mode , updateParent bool , updateRels map [ string ] bool ) bool { return mode == VisitAllUpdateSubdirsMode && updateParent || updateRels [ rel ] }
// shouldUpdate returns true if Walk should pass true to the callback's update
// parameter in the directory rel. This indicates the build file should be
// updated.
shouldUpdate returns true if Walk should pass true to the callback s update parameter in the directory rel . This indicates the build file should be updated .