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Re: Performance degradation from long lines

From: Stefan Monnier
Subject: Re: Performance degradation from long lines
Date: Thu, 25 Oct 2018 11:37:14 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

>> AFAIK there are *several* unrelated features that can cause very serious
>> slow downs in the presence of long lines.  So we need to attack them one
>> by one.
> "Attack" in what sense?

All the senses you mention.

> Personally, I think any real solution (as opposed to band-aids) of
> this issue should "attack" the root cause.  (Not that I'm opposed to
> having band-aids as interim solutions as long as we don't have
> anything better.)  So if someone is interested, I can describe in more
> detail the root cause for the slow redisplay in these cases.

I'll take a real solution over band-aids any day, of course.

The band-aids like so-long.el play a useful role, tho.  Not only they
provide short-term relief in the absence of a real solution, but also
they help pin-point the different root causes.


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