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bug#15755: 24.3.50; cperl-mode annoyingly slow on my netbook

From: Nathan Trapuzzano
Subject: bug#15755: 24.3.50; cperl-mode annoyingly slow on my netbook
Date: Thu, 31 Oct 2013 07:58:46 -0400
User-agent: Gnus/5.130007 (Ma Gnus v0.7) Emacs/24.3 (gnu/linux)

Jambunathan K <address@hidden> writes:

> 5. Move the cursor down a few lines
> 6. C-M-e.  Jump to end of defun. Move up a few lines to seek the comment
>    line.
> 7. Type a few characters
> (5) is slow. (7) is very slow.  Meaning it takes ages for the 10 or so
> characters to be echoed.

When I went to reproduce this, I started emacs without the -Q.  What
happened was C-M-e took me to the end of a _different_ defun, and it did
so quickly.  Step 7 wasn't slow for me either.

Indeed, I was able to reproduce this after starting emacs without
loading .emacs.  The funny thing is, the line that seems to be the
difference maker is, of all things:

(defalias 'perl-mode 'cperl-mode)

Without that line, I get the behavior you describe.  With that line, I
get fast but incorrect cperl (C-M-e takes me to the end of the wrong

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