Dear Gary, When looking at my CLIPS version, I realized it was an old one... so I installed the last version and the bug disappears. So the problem is solved! Thank you, Julien
I use CLIPS since several years for my AI class. All was ok until recently: it seems that the commands read and readline cause CLIPS IDE to crash. I've just observed this on my laptop with macOS Mojave (10.14.5), so I believe it's the new version of my OS that is the reason of this crash. I haven't change CLIPS version recently. Here is the CLIPS code : (defrule init (initial-fact) => (assert (questionner)) ) (defrule question ?q <- (questionner) => (printout t " > ") (assert (phrase (readline t)))...