The culprit can currently be spotted here:In the documentation of the "index" function, the last example line says:
(select '(1 10 3 6 4 5 11) '(1 3 6)) → (1 3 6)
This is wrong. The returned value is not (1 3 6) but (10 6 11).
http://www.newlisp.org/downloads/newlis ... html#index