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

From: Stefan Kangas <[email-masked]>
Date: Fri, 24 Sep 2021 19:25:56 -0700

Drew Adams <[email-masked]> writes:

>> How about the attached?
>
> In some cases you say "must", in other cases you say "should".

This inconsistency is there in the documentation already, compare:

  :type-error "This field should contain an integer"

With:

 @item integer
 The value must be an integer.

Sorting it out seems beyond the scope of this bug report.  If we even
need to do anything about it.

> You could say that one can always assign an option a value
> that doesn't match its :type spec.  So in practice, there's
> no solid enforcement of the law.  Still, the law says the
> value must be a nonnegative integer, regardless of whether
> there are ways to escape enforcement.  It's the law that
> gets written as the rule. ;-)

I basically agree, but we use "must" and "should" interchangeably all
over Emacs.  In context, they mean more or less the same thing.