bug#31782: 26.1; dired-recursive-deletes broken

[Noam Postavsky <npostavs@gmail.com>]

Leo Liu <sdl.web@gmail.com> writes:

> On 2018-06-14 09:05 -0400, Noam Postavsky wrote:
>>> (setq dired-recursive-deletes 'aways) still get
>
> I got an unfortunate typo here.

Oh, hah, I missed that too.

So, looking at the Bug#30073 fix, the new (currently being introduced in
Emacs 27) read-answer function looks pretty similar to
read-multiple-choice.  Perhaps some sharing is in order?

Another thing is that the defcustom default value trick doesn't work as
intended (as far as I understand the intention, at least).

    ;; For backward compatibility check if short y/n answers are preferred.
    (defcustom read-answer-short (eq (symbol-function 'yes-or-no-p) 'y-or-n-p)
      "If non-nil, accept short answers to the question."

For a user with .emacs consisting of

    (fset 'yes-or-no-p 'y-or-n-p)

<f1> v read-answer-short RET gives:

    read-answer-short is a variable defined in ‘map-ynp.el’.
    Its value is nil
    Original value was t

I think we'd want some `auto' setting which would tell read-answer to
look at the yes-or-no-p function value at run time.