[luatex] [MiKTeX] Calling texlua from texlua, with a space in the tex binary path

[Akira Kakuto]

Dear Siep Kroonenberg,

> Note that under TL/w32 os.getenv returns the parent path. Maybe
> this should be considered a bug, although the modified path is
> visible to child processes.

I don't know details, and I didn't change original code for os.setenv and os.getenv.
Please see:

http://tug.org/pipermail/luatex/2013-August/004572.html
http://tug.org/pipermail/luatex/2013-August/004573.html

Best regards,
Akira