On Tue, Feb 07, 2017 at 07:41:45AM +0100, Alexander Burger wrote:
>             (cond
>                ((= 'NIL Lst) 'NIL)

One important note: (= 'NIL Lst) is not a good idea.
Better to use (not Lst).

(= NIL Lst) would compare *names* if 'Lst' happened to be
a symbol, so (= NIL "NIL") returns T.

Better is (== NIL Lst), which checks for identity.

Anyway, good that we have have 'not' ;)

♪♫ Alex
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