[Gcl-devel] Re: eval-when 'defaults'

[Paul F. Dietz]

Camm Maguire wrote:
> Greetings, and thanks!
>
> Then it would appear the following lisp code is broken, and that a
> conforming compiler is not obliged to compile set-up-cursor to code
> that reflects the macro expansion of f-.  Right?

Yes.  You could make DEF-OP wrap the SETF form in an EVAL-WHEN,
but there's another problem: DEFUN, unlike DEFMACRO, is not required to have any
compile-time side effects, so the function it defines may not be
available for compile time computation in some conforming implementations.
(See the pages for DEFUN and DEFMACRO.)

I generally put macros definitions and their associated auxiliary
functions (that are used at macro expansion time) in a file that
is distinct from the files where the macros are actually used.
(The one exception would be if the macros don't use auxiliary functions.)

        Paul