RE: [PATCH] assq-delete-all, rassq-delete-all: Avoid duplication of code

[Herring, Davis]

> +(defun assq-delete-all-1 (elt alist key)
> +  (let ((op (if key #'car #'cdr)))

I would just pass `op' instead.  It makes the callers clearer, and also avoids 
the confusion of "use the key, not the value?" vs. "this is the key" for the 
variable `key'.

Davis