- ; when (car l) exists but isn't an atom, we try to remove a from (car l)
- ; if we succeed we prepend the result to (cdr l) and stop
- [else (let ([car2 (let/cc k2
- ; calling k2 with val will bind car2 to val and continue with the (cond ...) block below
- (aux (car l) k2))])
- (cond
- ; if a wasn't found in (car l) then prepend (car l) to the result of removing a from (cdr l)
- [(eq? car2 'notfound) (cons (car l) (aux (cdr l) k))]
- ; else a was found in (car l)
- [else (cons car2 (cdr l))]))]))]
+ [else
+ ; when (car l) exists but isn't an atom, we try to remove a from (car l)
+ ; if we succeed we prepend the result to (cdr l) and stop
+ (let ([car2 (let/cc k2
+ ; calling k2 with val will bind car2 to val and continue with the (cond ...) block below
+ (aux (car l) k2))])
+ (cond
+ ; if a wasn't found in (car l) then prepend (car l) to the result of removing a from (cdr l)
+ [(eq? car2 'notfound) (cons (car l) (aux (cdr l) k))]
+ ; else a was found in (car l)
+ [else (cons car2 (cdr l))]))]))]