bug#40047: 26.2; Images in tooltip-mode tooltips broken on Linux and OSX

[Alan Third]

On Thu, Mar 12, 2020 at 04:54:26PM -0500, Dustin Lacewell wrote:
> --text follows this line--
> 
> It appears that images in tooltip-mode tooltips is currently broken on
> most platforms besides windows. The following snippet should provide an
> example:
<snip>
> On Windows a tooltip displays an image. On Linux (NixOS, Ubuntu) and OSX
> only a small empty tooltip is presented.

On macOS the tooltips are extremely basic and don’t support anything
other than a few colour options and possibly a change of font.
-- 
Alan Third