(formal->alias x) → alias
Function:
(defun formal->alias (x) (declare (xargs :guard (formal-p x))) (let ((__function__ 'formal->alias)) (declare (ignorable __function__)) (b* (((formal x) x) (alias (cdr (assoc :alias x.opts))) ((when (characterp alias)) alias) ((when alias) (raise "In ~x0, :alias must be a character, but found ~x1." x.name alias) nil)) nil)))