bug#41145: 27.0.91; small issues with `display-fill-column-indicator' Customization group

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Eli Zaretskii <eliz@gnu.org>,  Philipp Stephani <p.stephani2@gmail.com>,
>   41145@debbugs.gnu.org
> Date: Sun, 30 Aug 2020 10:51:23 -0400
> 
> > emacs -Q
> > M-x customize-option RET global-display-fill-column-indicator-mode
> > And near the end of buffer I read:
> > Groups: Global Display Fill Column Indicator
> 
> Oh, indeed, it's an old misfeature that was introduced by our
> idiot-in-chief (tho to my defense, I think it made some sense back then
> because `defcustom` did not have a useful default for `:group`).
> 
> We can fix it either by adding `:group 'display-fill-column-indicator`
> to the `define-globalized-minor-mode` or by getting rid of the
> misfeature, as in the patch below (this patch will likely fix a few
> other similar cases).
> 
> Eli?

How about doing the former on emacs-27, and the latter on master?

Thanks.