Although it's been used for a fairly wide array of algorithms for decades. Everything from alpha-beta tree search to k-nearest-neighbors to decision forests to neural nets are considered AI.
Edit: The paper is called
Avoiding fusion plasma tearing instability with deep reinforcement learning
Reinforcement learning and deep neural nets are buzzwordy these days, but neural nets have been an AI thing for decades and decades.
Emacs is a bunch older than common lisp.
One of its more idiosyncratic design decisions was using dynamic scope, rather than lexical scope. They did add in per-file lexical scope, though.
It also just doesn't implement a lot of common lisp's standard library.