luatex doesn't find files with non-ascii on windows

[Taylor, P]

Ulrike Fischer wrote:


I can't input files with umlauts/non-ascii on windows 10.

\input grüße


Any difference if you use only one of the two "odd" characters, as in :

  *

\input grüe

  *

\input grße

?

Here I get (Windows 7 Enterprise, 64-bit)

D:\temp>copy con grüße.tex
xxx
\end
^Z
        1 file(s) copied.

D:\temp>dir
 Volume in drive D is HDD 1 (Win 7 Data)
 Volume Serial Number is C21D-9491

 Directory of D:\temp

27/10/2019  16:27    <DIR>          .
27/10/2019  16:27    <DIR>          ..
27/10/2019  16:27                11 grüße.tex
               1 File(s)             11 bytes
               2 Dir(s)  588,538,236,928 bytes free

D:\temp>luatex
This is LuaTeX, Version 1.10.0 (TeX Live 2019/W32TeX)
 restricted system commands enabled.
**\input grüße
! String contains an invalid utf-8 sequence.
<*> \input gr
          ße^^@e
? \end
Type <return> to proceed, S to scroll future error messages,
R to run without stopping, Q to run quietly,
I to insert something,
H for help, X to quit.
? x

warning  (pdf backend): no pages of output.

D:\temp>

Philip Taylor
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