Yes, sorry, I wrote NFC but described NFD. I’ll fix it. However, your example of something that doesn’t work, does. Watch:

% uniquote -v t
echo foo > \N{LATIN SMALL LETTER A WITH ACUTE}
cat \N{LATIN SMALL LETTER A WITH ACUTE}

% sh /tmp/t
foo

%  ls a? | uniquote -v
a\N{COMBINING ACUTE ACCENT}
[download]

It has to work that way, because the same NFC conversion takes place for all filenames passed to open. But I do know what you mean. It depends on the syscall. Apparently stat doesn’t do that, since there you have to do it yourself:

% perl -le 'print -e "\xE1" ? "Yes" : "No"'
No

% perl -MUnicode::Normalize -le 'print -e NFC("\xE1") ? "Yes" : "No"'
Yes
[download]

---

I see my stalker is back. Yawn!