[Python-ideas] Allow additional separator character in variables

[Mikhail V]

Just for the record, there is also another hyphen, called "soft hyphen", U+00AD.
Main difference is that in some software it is an 'interpreted' symbol, and
thus may simply disappear from the screen in such software, so it cannot
be surely defined as a printable character.
OTOH the benefit is that it is 100% present in any font, afaik.

I have found a good technical summary about this character:

http://jkorpela.fi/shy.html