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From: Michael Heerdegen <michael_heerdegen@web.de>
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Subject: Re: Emacs 30.0 warning from `cl-pushnew' and `memql'
Date: Thu, 29 Dec 2022 11:39:57 +0100
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Jean Louis <bugs@gnu.support> writes:

> Let us say I am adding only strings, would this be faster than `push':
>
> (setq my-list '())
> (setq my-list (cons (quote "Word") my-list))

`push' forms expand to code like this.  `cl-pushnew' is slower
because of the additional tests.

Michael.