Re: Emacs design and architecture. How about copy-on-write?

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

> I'm not sure I understand: what is the difference between a global
> variable defined in C and a global variable defined, say, in
> simple.el?

The variable defined in C must be accessible by a C lvalue.  Namely,

  (*current_thread->f_Vname_of_the_variable)