cpplib: Preliminary implementation of UCNs

[Neil Booth]

Zack Weinberg wrote:-

> Neil Booth <neil@daikokuya.co.uk> writes:
> 
> ...
> >I don't think it's a good idea to make \u00aa and \u00AA the same
> > identifier, never mind making it the same as the character itself.
> 
> I disagree strongly - please give a rationale for your position.

Let's ask on comp.std; if it transpires they're supposed to be the
same then I'm happy.

I'm not quite sure how we'd implement this - the spelling of the
identifier wouldn't match the sequence of bytes in the hashtable,
which is a fundamental assumption right now.

Neil.