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Re: unpleasant flickering in terminal emacs


From: Amos Bird
Subject: Re: unpleasant flickering in terminal emacs
Date: Fri, 27 Apr 2018 20:23:07 +0800
User-agent: mu4e 1.0-alpha3; emacs 27.0.50


Thanks. But it's emacs in the terminal which flickers, not in the GUI. I'm not sure if the double buffering mechanism has anything to do with terminals.

regards,

Tim Visher <address@hidden> writes:

I don't have an informed idea about whether you're suffering from this (I
never have) but your question tickled my memory.

https://www.facebook.com/notes/daniel-colascione/buttery-smooth-emacs/10155313440066102/

On Fri, Apr 27, 2018 at 7:58 AM, Amos Bird <address@hidden> wrote:

Hi,

I'm using emacs master branch in terminal (alacritty). When moving cursor with relative line number enabled or scrolling up/down, I get unpleasant screen flickering. However, frame switch works fine, which I suppose uses full rendering updates. It seems partial rendering
update doesn't work well. The author of alacritty mentioned one
possible cause : "flickering is typically caused by a program not writing full updates to the pty. We drain all available bytes up to like 64k before yielding for a render. It may be that we should add some heuristic around time to prevent flickering from poorly behaved terminal applications." So my question is, can I enable full updates
for every redisplay? Thanks!

Here is a screencast of flickering.

https://youtu.be/wv4QINKHDUY

regards,

--
Amos Bird
address@hidden




--
Amos Bird
address@hidden



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