Re: Emacs Lisp and Guile

[Richard Stallman]

    Yes, the variables that can run code on access need to be specially
    constructed.

In Emacs, there is a fixed set of Lisp variables that forward to C
variables.  It would be fine to construct them specially.

However, any Lisp variable could have buffer-local and frame-local
bindings.  So if we are going to support the optimization of
not swapping in these bindings until a reference occurs,
it would be necessary to support it for variables that have
not been constructed specially.