; https://github.com/munificent/craftinginterpreters/blob/master/test/closure/shadow_closure_with_local.lox
; TODO: Forbid this https://discordapp.com/channels/571040468092321801/618895179343986688/925533402592079912

(define (displayln x)
  (display x)
  (newline))

((lambda ()
   (define foo 0)
   (define (f)
     ((lambda ()
        (displayln foo)
        (define foo 1)
        (displayln foo))))
   (f)))