[Chicken-users] Use of trace and break

[Lawrence Bottorff]

I'm trying to run trace:

(define (powerset lst)

  (if (null? lst)

      '(())

      (append-map (lambda (x)

                        (list x (cons (car lst) x)))

                    (powerset (cdr lst)))))

inside the csi repl. I'd like to set breakpoints and stop the routine and see what each parameter is holding. Can someone walk me through how this is done?

LB