Subject: RE: [External] : Re: bug#15809: 24.3.50; wrong defcustom type for `suggest-key-bindings'

From: Drew Adams <[email-masked]>
Date: Sat, 25 Sep 2021 01:50:25 +0000

> > FWIW, "natural number", like "whole number", unfortunately
> > has two different meanings, 1... and 0..., depending on
> > who is talking.
> >
> >
> https://urldefense.com/v3/__https://en.wikipedia.org/wiki/Natural_numbe
> r__;!!ACWV5N9M2RV99hQ!YF8_QIyGvA34pZcXQ5IY8wSQQwrUUykjIfLCvd5eidW2mRgqe
> d8BnAbe2sG274Mx$
> >
> > Emacs has predicate `natnump', with alias `wholenump',
> > meaning 0...  So the doc for a defcustom type that
> > mentions "natural number" had better make clear which is
> > meant.  It can do that by mentioning predicate `natnump'.
> 
> The docstring of `natnump' defines it as "a nonnegative integer".

Which is why one fix is to mention `natnump'.  But
that makes a reader check the doc string of `natnump'.

It's about "the doc for a defcustom type that mentions
'natural number'".  It's the defcustom type that needs
the doc love.  The doc of `natnump' is OK already.