[Python-3000] PEP 3131 - the details

[Talin]

While there has been a lot of discussion as to whether to accept PEP 
3131 as a whole, there has been little discussion as to the specific 
details of the PEP. In particular, is it generally agreed that the 
Unicode character classes listed in the PEP are the ones we want to 
include in identifiers? My preference is to be conservative in terms of 
what's allowed.

-- Talin