I had an issue where I had unicode files on FAT and I wanted to copy them on APFS on mac; and half of them I could not copy, because they were in… uhh either NF

I had an issue where I had unicode files on FAT and I wanted to copy them on APFS on mac; and half of them I could not copy, because they were in… uhh either NFD or NFC. One of them. macos just showed some random error when I tried to copy. What I needed to eventually do is to go on Windows, install WSL there, then run some script that recursively renamed them from the first to the other (on the FAT volume), and only then I could copy them from FAT to APFS, on the Mac. (I could probably skip the WSL and do it with some Windows-only tooling, but that would take me even longer.) so this little exercise involved mac, windows, linux (and plan 9, if you count the wsl filesystem shenanigans)