[luatex] lualatex / includegraphics / open files

[Knut Petersen]

Am 03.12.2017 um 15:01 schrieb Ulrike Fischer:
> I don't know which problem you have here. Both variants in the
> following document writes utf8:

Yes. But you do use \unexpanded:

> \immediate\write\testb{\unexpanded{Grüße}}

If an environment is implemented as in the attached MWE it is impossible to use \unexpanded ...
or the solution to the problem is beyond my knowledge of TeX.

Knut
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