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Re: Emacs awfully slow on some files


From: Eli Zaretskii
Subject: Re: Emacs awfully slow on some files
Date: Mon, 10 Aug 2009 22:01:38 +0300

> Date: Mon, 10 Aug 2009 20:04:08 +0200
> From: Deniz Dogan <address@hidden>
> 
> I have a file which is 1 MB long and all of the content is on a single
> line. Using Emacs on this file is pretty much impossible due to the
> super-sluggish behavior. It's embarrassing. Why is this? Can it be
> fixed?

IIRC, this is a fundamental limitation of the current implementation
of the Emacs display engine.  Too long lines make it very slow.

Does it help to set truncate-lines to a non-nil value?




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