On Sat, Dec 07, 2019 at 07:35:48PM +0800, Tiezhu Yang wrote: > There exists many similar and duplicate codes to check "." and "..", > so introduce is_dot_dotdot helper to make the code more clean. Umm... No objections, in principle, but... you try to say that name (e.g. in a phone conversation) without stuttering ;-/ Any suggestions from native speakers?