Allow anything in identifiers?

[David Porter]

* Sverker Nilsson <sverker.is at home.se>:
> This would be a new kind of identifiers, I suppose one
> can make them by writing for example id <string> like in:
> 
> id 'a>b' = a > b
> id 'x.b' = x.b
> alu.id'+' = lambda x, y...
> 
> I think it could make programs easier to read by allowing
> more evident identifiers in many cases. The extended identifier
> syntax should not break anything, and it seems it might be easy to
> implement...

It would break any code using the name 'id', likely a lot of code.