bug#70589: [PATCH] Refine the Custom type of generated '*-modes' options

[Eli Zaretskii]

> From: Eshel Yaron <me@eshelyaron.com>
> Cc: 70589@debbugs.gnu.org,  monnier@iro.umontreal.ca
> Date: Fri, 26 Apr 2024 18:34:20 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> From: Eshel Yaron <me@eshelyaron.com>
> >> Cc: 70589@debbugs.gnu.org,  monnier@iro.umontreal.ca
> >> Date: Fri, 26 Apr 2024 14:24:42 +0200
> >>
> >> >> These are slightly different: a value of t ("Enable in all major modes")
> >> >> says to enable everywhere, while a t inside a list ("All major modes")
> >> >> says to enable in modes that were not mentioned earlier in the list (so
> >> >> putting t in the end of the list means "otherwise, enable").  Similarly
> >> >> for the "none" alternatives: a value of nil ("Don't enable...") means we
> >> >> never enable the minor mode, while the effect of a nil inside the list
> >> >> is relative to the previous elements, and means "otherwise, don't".
> >> >> Does that make sense?
> >> >
> >> > It might make sense, if we change the labels to say what you tell
> >> > above.
> >> >
> >> > Thanks.
> >>
> >> OK, here's an updated patch with revised labels:
> >
> > Thanks, but I find the likes of "By default, enable" not clear enough.
> > Would it be accurate to say this instead:
> >
> >                         (const :tag "Enable in any other mode" t)
> >                         (const :tag "Don't enable in the other modes" nil)
> 
> That could also work, but I think this wording is a bit confusing when
> entering the first list element (so there are no "other mode/s" yet).
> If you think it's nevertheless preferable, I don't object.

Feel free to suggest a better wording, that caters also to that
special situation.