Hi,
At some point SBCL's threading model changed, and that seems to have broken something in slime. (Some people will say at this point that I reap what I sow...).
Specifically, while running (swank:ed-in-emacs 'and) in the REPL gives me an interface to choose which AND I would like to edit, running (sb-thread:make-thread (lambda () (swank:ed-in-emacs 'and))) gives me "NIL is not of type SWANK::CONNECTION". So at a guess this comes from the change in the initial value for special variables in new threads.
What should I be looking at?
Cheers,
Christophe