bug#47012: xref copies keymap properties to minibuffer

[Eli Zaretskii]

> Cc: 47012@debbugs.gnu.org, juri@linkov.net
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Wed, 31 Mar 2021 19:10:59 +0300
> 
> On 31.03.2021 18:59, Eli Zaretskii wrote:
> > As we all know, faces can be customized.  If some attributes are
> > "magic", in that the display will be hard to read if those attributes'
> > values are changed, then I think we should document that in the
> > respective doc strings.
> 
> I'm not sure what you're saying we should or shouldn't do.

I'm just worried by the amount of attention this one face suddenly
needs.  Why is that?  No other face I have ever met needed such
elaborate research regarding its defaults.