On 11/24/2020 4:32 AM, Kristian Ivarsson via Cygwin wrote: > all the std::filesystem implementations I've seen for Windows The implementation on top of Cygwin is not "for Windows", it's "for Cygwin", i.e., "for Posix". And for Cygwin that's the right thing to do. And that's where we keep talking at cross purposes. Best wishes - Eliot Moss