I don’t think that is correct. There are issues with whether and how file names are normalized when stored in a directory, and the answers are file system dependent.
File system lookups are described as normalization-insensitive. I’m not an expert, though, and it is hard to find decent up-to-date documentation on this matter. > On Jan 29, 2019, at 3:24 PM, Stuart Marks <stuart.ma...@oracle.com> wrote: > > Hm, Martin had mentioned that macOS uses something more restrictive than > UTF-8. It seems to me that a filesystem-specific encoding is called for here.