>
> > Displaying inline images instead of characters us rather
> straightforward, actually; here's what a patch might look like (with your
> defcustom patch, it would be even simpler: only the defcustom would change).
>

Thanks for the example.

That's just a simplified example, though, right?  Because we cannot
> unconditionally use an SVG image; cannot even assume any kind of
> images is always supported, in fact.
>

So, what do you reckon is the way forward about this issue? I'm willing to
make a better attempt at my defcustom patch, but I'm not sure there's
enough consensus for it to then be accepted.