[Python-ideas] PEP 540: Add a new UTF-8 mode

[INADA Naoki]

>> If we chose "Always use UTF-8 for fs encoding", I think
>> PYTHONFSENCODING envvar should be
>> added again.  (It should be used from startup: decoding command line argument).
>
> Last time I implemented PYTHONFSENCODING, I had many major issues:
> https://mail.python.org/pipermail/python-dev/2010-October/104509.html
>
> Do you mean that these issues are now outdated and that you have an
> idea how to fix them?
>

Just a idea: Only "ascii", "utf-8" (default) and "locale" is allowed
for PYTHONFSENCODING.