>> Yes, exactly! Craig's Correspondents is a very complete implementation
>> of this approach.
> 
> Indeed. It really should go into the system as soon as feasible. I've

While I'd hate to reopen that can of worms, I recall a noisy debate about
this some months ago. IIRC, the conclusion was that Craig's stuff, for all
its merits, requires rather substantial VM changes as it stands, which will
require a fair amount of rework on each VM platform, all the while the
actual new primitives only had one substantial difference wrt the existing
stuff.

However, again from memory, Craig said he'd port it to the existing
foundation, if he would only be assured that his work would be incorporated
into the image so that his effort wouldn't be wasted. Now figure out
yourselves what strings you need to pull to get this into Squeak!

Henrik