bug#61293: 30.0.50; [FR] Add `proper-list-p' and `plistp' to 2.7 Type Predicates section of the manual

[Ihor Radchenko]

Hi,

would it make sense to mention `proper-list-p' and `plistp' in the Elisp
manual? I got to know about these function by accident and
`proper-list-p' in particular is extremely useful in some situations.

Also, what about `alistp'? Would it make sense to add such function?

In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, cairo version
 1.17.6) of 2023-02-03 built on localhost
Repository revision: ac7ec87a7a0db887e4ae7fe9005aea517958b778
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101006
System Description: Gentoo Linux

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>