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From: Ilya Zakharevich <nospam-abuse@ilyaz.org>
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Subject: Re: cperl-mode
Date: Fri, 31 Aug 2007 20:51:40 +0000 (UTC)
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[A complimentary Cc of this posting was sent to
Goran 
<argoxo@yahoo.com>], who wrote in article <mailman.109.1188567372.18990.help-gnu-emacs@gnu.org>:
> Paging C-v, M-v and typing characters is most time
> slow, no matter the size of file.
> 
> I have compiled Emacs 22.1.1 from source on Mandriva 2005
> Linux, kernel 2.6, 512M memory and Debian 3.1 Linux kernel 2.6
> 384M memory.

You still did not answer "Slow with respect to WHAT?".

> cperl-mode is as shipped with Emacs 22.1.1
> (defvar cperl-version
>    (let ((v  "Revision: 5.22"))

This is not the latest version.  ilyaz.org/software.

I saw bugs reports that v22.1 is practically unusable with CPerl (too
many bugs: syntaxification does not work correct), but not about slowdown.

Hope this helps,
Ilya