Re: How to shade the whole area after fill-column with display-fill-column-indicator-mode

[Eli Zaretskii]

> Date: Fri, 29 Dec 2023 19:11:05 +0800
> From:  kotatsuyaki via Users list for the GNU Emacs text editor 
> <help-gnu-emacs@gnu.org>
> 
> I am seeking for a way to shade the whole area after fill-column with a
> grey background, as seen in this screenshot [1] from the page for "Fill
> Column Indicator" [2] on the EmacsWiki.  How do I achieve the style
> using display-fill-column-indicator-mode?
> 
> I tried setting the :extend face attribute on the fill-column-indicator
> face, as that's how I make the background color of the headlines in
> org-mode extend all the way to the right until the edge of the window.
> However, the background color of the indicator does not extend:

You can't do that, currently.  The display of fill-column-indicator is
programmed to return to the previous face after displaying the
indicator itself.  I suggest to submit a feature-request bug report
asking for the feature you'd like to have.