bug#32932: 27.0.50; render bugs on macOS Mojave

[Aaron Jensen]

On October 29, 2018 at 9:09:48 AM, Alan Third
(alan@idiocy.org(mailto:alan@idiocy.org)) wrote:

> One more go. I don’t think I’ve seen the cursor line flicker after
> installing this.
>
> Simply, all I’ve done is stop making it redraw the entire line the
> cursor is on. That should stop any flicker of the line text caused by
> redrawing the cursor, but won’t stop any flicker of the cursor itself,
> although I’ve not seen it flicker.

I’ve got a consistent repro on my config with this patch. If I start
emacs then open a dired buffer in a dir that has images in it, then
hit return on one of the images, the current line goes blank while the
image loads. If I kill the buffer and reopen the same one it does not
repro.

I cannot reproduce this in emacs -Q as it’s much faster than whatever
my config is doing whenever I open an image.

That said, I haven’t seen any line flickers yet aside from that. I’ll
keep trying it out and report back.

Aaron