bug#36035: 26.2; doc string of `add-to-list'

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Drew Adams <drew.adams@oracle.com> writes:

> But one might easily get the impression that it does NOT add ELEMENT if
> it is already present.  And that's just plain wrong.
>
> (setq foo '((a . "aaa") (b . "bbb"))) ; => ((a . "aaa") (b . "bbb"))
>
> (add-to-list 'foo '(a . "@@@@")) ; => ((a . "@@@@") (a . "aaa") (b . "bbb"))

Have you mixed up add-to-list with some hypothetical add-to-alist?

(setq foo '((a . "aaa") (b . "bbb"))) ; => ((a . "aaa") (b . "bbb"))

(add-to-list 'foo '(a . "aaa")) ; => ((a . "aaa") (b . "bbb"))