Re: Scrolling commands and skipping redisplay, was: Re: emacs rendering comparisson between emacs23 and emacs26.3

[Eli Zaretskii]

> From: Dmitry Gutov <address@hidden>
> Date: Thu, 9 Apr 2020 21:37:08 +0300
> Cc: address@hidden, address@hidden, address@hidden, address@hidden,
>  address@hidden
> 
> On 09.04.2020 16:19, Stefan Monnier wrote:
> > BTW, you can also set `jit-lock-defer-time` to 0 in which case jit-lock
> > is deferred iff there's input pending.
> > [ This refinement of `jit-lock-defer-time` was introduced last time
> >    this kind of discussion took place, which is also the time
> >    `fast-but-imprecise-scrolling` was introduced.  ]
> 
> Thanks. I tried it (and mentioned in the parent thread), but it seems 
> like in addition to the downsides of f-b-i-s (imprecise scrolling, which 
> apparently makes it a bad candidate for default behavior) it adds some 
> extra flickering from time to time (I figured because some redisplays 
> occurred before the idle timer had the chance to run).

Which is why I don't think using 0 is such a good idea.