googling for "common lisp condition system" turns stuff up. i looked at one point, and i don't remember finding an academic treatment of them. they're (hand wa

googling for "common lisp condition system" turns stuff up. i looked at one point, and i don't remember finding an academic treatment of them. they're (hand wave hand wave) basically a matter of stuffing the current continuation inside of the exception, whenever you throw an exception, and then making use of that to provide more options whenever the exception is caught.