Re: NS Port drawing, again

[Keith David Bershatsky]

With respect to cursors being left behind when scrolling, I have dealt with 
that in playing with feature requests #22873 (multiple fake cursors) and #17684 
(crosshairs) by removing the cursors at the outset of redisplay in various 
locations.  For example, see the locations where I have:

  mc_remove_multiple_cursors (w);
  mc_remove_crosshairs (w);

See proof concept patch version 015 (11_10_2018__18_53_09_703.diff):

https://debbugs.gnu.org/cgi/bugreport.cgi?bug=22873#113

Keith

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> Date: [10-12-2018 02:28:07] <12 Oct 2018 10:28:07 +0100>
> From: Alan Third <address@hidden>
> To: Keith David Bershatsky <address@hidden>
> Cc: Emacs-Devel devel <address@hidden>
> Subject: NS Port drawing, again
> 
> On Fri, 12 Oct 2018, 09:54 Alan Third, <address@hidden> wrote:
> 
> * * *
> 
> I think this would solve issues with the cursor being left behind on 
> scrolling, the flicker on resizing from lisp and probably the random blanking 
> of frames users
> report.
> 
> * * *