On Fri, May 24, 2024 at 12:33:08AM +0900, Jun. T wrote:

Unfortunately v3 still doesn't work.
'git ls-files NFD' works but 'git ls-files NFC' does not.

I think it better to test both "ls-config NFD" and "ls-config NFC".

The reason of the failure seems to be the same as v2, but
I describe it here in more detail (or too detailed).

Thanks for testing - I was fully convinced that the new test case
did cover all problems - but proved to be wrong.

[snip the nice analyses]

I don't know how to fix the problem, but I think it better to avoid
calling precompose_{strbuf,string}_if_needed() before commondir
is set to ".git" and .git/config is successfully read.

Or reset the_repository->config->hash_initialized at some point?

I think that I may be able to offer a v4 patch, which has better test cases.
From my understanding, the reading of the local/repo .git/config does
not work as we need it, since the .git/ directroy is determined after
the config has been read. And so it is never read.
Having said that, a patch relying on the global .gitconfig may still
be an improvement on it's own.