STINNER Victor wrote:
> 
> STINNER Victor <victor.stinner@haypocalc.com> added the comment:
> 
>> No, you store the environment data as bytes and only
>> decode in getenv() ...
> 
> Yes, this is the best solution for POSIX. We need maybe also a os.getenvb()->bytes function, maybe only on POSIX.

Yes, plus a os.setenvb() function to pass the data back to the C level
array.

> But I think that Windows should continue to use unicode environment variables. Should os.getenv(key, encoding=...) reencode the value on Windows?

Good idea. That would make applications more easily portable between
Windows and POSIX.