Lars Ingebrigtsen <larsi@gnus.org> writes:

> Mauro Aranda <maurooaranda@gmail.com> writes:
>
>>> Could this also be extended to button.el buttons?
>>
>> I think so.  I'll think how to put it all together and come back with a
>> patch.  (Will be busy the next few days, but perhaps by the weekend I'll
>> be able to send it)
>
> Great!

Find in the attached patch my idea to implement this.

I wrote a command, describe-actions, so the user does not have to care
if the element to describe is either a button, a widget, or whatever.
And then, the libraries that define this kind of elements should add
themselves to `describe-actions-functions'.

Then I implemented the functions for the button.el buttons and the
widgets.

There are some things I would like to ask:
- I would like to put an initial value of nil to
`describe-actions-functions', and let each library add the function to
this list.  Is it OK to use `with-eval-after-load' here? Is there
another way?

- I put an autoload cookie in `seq-find', in order to use it in
`describe-actions'.  Is it OK?

Please review the patch and send any suggestions for improvement.  If
accepted, I'll write the documentation needed for the NEWS file and the
manual.

Best regards,
Mauro.