Recognize true lists of pseudo-term-functions.
(pseudo-termfn-listp x) → std::bool
This is an ordinary std::deflist. It is
"strict" in that it requires
Function:
(defun pseudo-termfn-listp (x) (declare (xargs :guard t)) (let ((__function__ 'pseudo-termfn-listp)) (declare (ignorable __function__)) (if (consp x) (and (pseudo-termfnp (car x)) (pseudo-termfn-listp (cdr x))) (null x))))