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From: Roland Winkler <winkler@gnu.org>
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Subject: Re: Arguing for a nilp function and where to put it
Date: Sun, 02 Apr 2023 16:28:56 -0500
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On Sat, Apr 01 2023, Pedro Andres Aranda Gutierrez wrote:
> So, null is an outlier... no problem, can live with that... intuition
> failed me <blush>RTFM</blush>...

I normally do not look at emacs' C code.  I was amused that all the
built-in function `null' does is call NILP.