Re: At sign ``@'' in key

[Florian Weimer <fw@...>]

* Rena:

>> GCC allows $ in identifiers as a C extension (which cannot be switched
>> off).  Curiously, the same thing hasn't happened.

> I think that's because it's a compiler extension, and intended only
> for internal use?

It's for VMS compatibility, where most system APIs have a $ in their
names.

> IIRC it even generates a warning if you use it.

Only for C++.