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Re: Why emacs rendering is slow when encountering long lines?


From: Eli Zaretskii
Subject: Re: Why emacs rendering is slow when encountering long lines?
Date: Mon, 21 Oct 2013 19:36:53 +0300

> From: Jules Colding <address@hidden>
> Date: Mon, 21 Oct 2013 16:39:39 +0200
> Cc: address@hidden
> 
> I have a file here:
> 
> https://github.com/colding/MercuryFIX/blob/master/applib/fixio_tests/check_fixio.cpp
> 
> which has an extremely long word (one font, all caps) at line 213. As soon as 
> scrolling down comes within 2-3 lines distance, everything stops for a second 
> or two.
> 
> Just a datapoint...

That's an entirely different issue.  To see why, type

  M-x global-font-lock-mode RET

and then visit that file and scroll through the problematic spot.
Puff! the problem goes away.

So not really a data point wrt the issue at hand.



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