bug#57886: 29.0.50; In `C-h b', allow fold/unfold on headline with RET

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Juri Linkov <juri@linkov.net> writes:
>
>> This is intentional, so you can press RET on a button on the headline.
>> For example, RET on `lisp-interaction-mode' will show help for
>> `lisp-interaction-mode':
>>
>>   * `lisp-interaction-mode' Major Mode Bindings:
>>   Key           Binding
>>   C-j           eval-print-last-sexp
>>   DEL           backward-delete-char-untabify
>
> So I think this is working as intended.

I think it would be good with a bit more DWIM here: RET follows link if
there is one, and folds otherwise.