That’s good to know, but the parent’s examples seem to be referencing the issue of filenames that aren’t valid Unicode. The Linux example is invalid UTF-8, sin

That’s good to know, but the parent’s examples seem to be referencing the issue of filenames that aren’t valid Unicode. The Linux example is invalid UTF-8, since Linux filenames are natively arbitrary byte sequences. The Windows example contains an unpaired surrogate followed by the reserved codepoint 0xfffe, since Windows filenames are natively UCS-2.