luatex problem with file with umlauts on windows 10

Ulrike Fischer news3 at
Sat Apr 25 19:37:13 CEST 2020

Dear Akira,

>> Currently the file search in expl3 is broken because of this, so
>> I'm considering our options
> f = chgstrcp.utf8tosyscp(file)
>     (file: utf-8, f: local code page)
> f = chgstrcp.syscptoutf8(file)
>     (file: local code page, f: utf-8)
> work only in lua[hb]tex for TeX Live Windows.
> Please use them in expl3, if they are usable.

I tried with some chinese (at least I think it is chinese). And
there is breaks again: the file is input but lfs reports nil:

FILE:   ./gre.tex
SIZE:   5
isfile  true
FILE:   ./???????.tex
SIZE:   nil
isfile  false

Ulrike Fischer

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