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