I too agree that implementing 'lset' / 'lget' was quite gnarly. I had to invent an algo mostly from whole cloth after getting some hints on Stack Overflow (I do see that @MikChan had a similar approach, so maybe it wasn't that original).

Congratulations!
Well, actually it should not be that hard to transform bf from pointer version to named version if you just know exactly how many slots do the pointer version relay on
Anyway, glad that you had fun with bf