"Leslie P. Polzer" <leslie.polzer@gmx.net> writes:
Dear Christophe,
you wrote:
(What is "the" backquote expansion object, anyway?)
I'm not sure what you are asking here. The object is what ` expands into, which is undefined by the spec (as is the expansion of , and ,@).
But according to the current spec, ` need not expand into anything at all. What I am challenging is your assertion that there should be a single ("the") backquote object that ` always expands to.
Whereas SBCL seems to have some things going on under the hood:
Yes, it does: it performs read-time optimizations, as it is allowed to. If you want to disallow those read-time optimizations, that's fine, but you then have to make a case for that (rather than simply begging the question by assuming that they are never performed). Cheers, Christophe