bug#66947: 30.0.50; Implement missing functions for custom-icon widget

[Mauro Aranda]

On 5/11/23 11:24, Stefan Kangas wrote:
> Mauro Aranda <maurooaranda@gmail.com> writes:
>
>> There are some missing functions for the custom-icon widget to actually
>> work when customizing icons:
>> :custom-mark-to-save
>> :custom-reset-current
>> :custom-reset-saved
>> :custom-state-set-and-redraw
>> :custom-reset-standard
>> :custom-mark-to-reset-standard
>>
>> I'll send a patch.
>
> Thanks.  Is this patch intended for emacs-29, like the last one?

Ideally, yes.  It doesn't solve serious bugs, but it completes, I think,
the Customizing icons functionality.

It does solve some bugs, like:
emacs
(require 'outline)
M-x customize-group RET outlines
Edit an option and an icon.
Action the State button and select Save for Future Sessions
That errors with:
widget-apply: Symbol’s function definition is void: nil

That's because of a :custom-mark-to-save function missing for the
custom-icon widget.