On Mon, Feb 11, 2019 at 11:59:24AM +0100, Robert Pluim wrote:
> 
> I just tried this against emacs-26, and the resulting emacs is not
> functional: the display doesnʼt update, the minibuffer doesnʼt
> show. This is on Mojave (10.14.3)

Thanks for trying it. I don’t know why I expect anything to work right
any more.

Please try the attached. I don’t think the performance is terribly
good. I was caching the graphics context as recreating it appears to
be an expensive operation, but it looks like Mojave doesn’t like that.

-- 
Alan Third