bug#56691: outline-minor-mode displays navigation arrow buttons as emojis

[Eli Zaretskii]

> Date: Fri, 22 Jul 2022 15:00:27 +1000
> From:  "Paul W. Rankin" via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> User option outline-minor-mode-use-buttons appears to have no effect.

This is because describe-bindings overrides it:

        (when describe-bindings-outline
          (setq-local outline-regexp ".*:$")
          (setq-local outline-heading-end-regexp ":\n")
          (setq-local outline-level (lambda () 1))
          (setq-local outline-minor-mode-cycle t
                      outline-minor-mode-highlight t)
          (setq-local outline-minor-mode-use-buttons t)  <<<<<<<<<<<<<<
          (outline-minor-mode 1)

Which I think is a bad idea to do unconditionally.  At the very least,
describe-bindings-outline's default value should NOT override
outline-minor-mode-use-buttons, and it should have a non-default
optional value to override it for users who want that.