bug#1305: All code that currently beeps should use visual bell instead

[Dmitry Gutov]

On 20.04.2021 17:21, Gregory Heytings wrote:
> I attach a patch which implements a new default bell.
>
> It can't be pushed yet (my paperwork is still not finished :(), but 
> comments are welcome.

In general, I like it (though the concerns about colors are still there; 
perhaps just use inverse-video in GUI as well?).

And it turns the cursor red irreversibly in my config (but not in 'emacs 
-Q').

Is nobody bothered by having this kind of visual indication while 
'visible-bell' is nil, though?