bug#30073: 27.0.50; dired-do-delete ignores customization for short answers

[Juri Linkov]

>> FWIW, I find
>>
>>   (advice-add 'yes-or-no-p :override #'y-or-n-p)
>>
>> to be a slightly user-friendlier alternative to
>>
>>   (fset 'yes-or-no-p 'y-or-n-p)
>>
>> as the former is at least reported by the help system.
>
> IMO, none of that is user-friendly as customization goes.  These are
> semi-kludgey hacks, which are okay for personal use, but not as
> advertised customization means.  YMMV, of course.

Maybe we should introduce a boolean customizable variable with a name
‘minibuffer-short-answers’ to be used by different packages that
currently rely on ‘yes-or-no-p’.