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  1. (print (let* ((x nil) (y x)) (setq x t) (and y x)))
  2. (print (let* ((x nil) (y x)) (setq x t) (and x y)))
  3. (print (let* ((x nil) (y t)) (setq y x) (setq x t) (and y x)))
  4. (defun noop (x) (when x (princ "")))
  5. (print (let* ((x nil) (y x)) (noop y) (setq x t) (and y x)))
  6. (print (let* ((x nil) (y x)) (setq x t) (noop y) (and y x)))
  7.  
Success #stdin #stdout 0.01s 29060KB
stdin
Standard input is empty
stdout
T 
NIL 
NIL 
NIL 
NIL