Always fun when code relies on the order of iterating over a dir (which is in general clearly not defined to have any order, even iterating the same dir 2th con

Always fun when code relies on the order of iterating over a dir (which is in general clearly not defined to have any order, even iterating the same dir 2th consecutively might not yield the same order depending on "stuff" (e.g. exact file system used)). So if order matters, always sort. (Luckily in most situations where dir iter order matters, the performance impact from sorting is acceptable or even outright irrelevant.)