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Re: unpleasant flickering in terminal emacs


From: Tim Visher
Subject: Re: unpleasant flickering in terminal emacs
Date: Fri, 27 Apr 2018 08:04:29 -0400

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
>
>


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