GNU bug report logs - #10288
24.0.92; font-lock-mode/c++-mode extremely slow on this file

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Kan-Ru Chen <kanru <at> kanru.info>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.92; font-lock-mode/c++-mode extremely slow on this file
Date: Tue, 13 Dec 2011 18:03:14 +0800

[Message part 1 (text/plain, inline)]

File attached.

$ emacs -Q -nw test.cpp

Emacs become slow to complete unresponsive if the pointer was in the
middle of the initializer.

In GNU Emacs 24.0.92.1 (x86_64-pc-linux-gnu, GTK+ Version 3.2.2)
 of 2011-12-06 on zelenka, modified by Debian
 (emacs-snapshot package, version 1:20111206-1)
configured using `configure  '--build' 'x86_64-linux-gnu' '--host' 'x86_64-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/24.0.92/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.0.92/site-lisp:/usr/share/emacs/site-lisp' '--without-compress-info' '--with-crt-dir=/usr/lib/x86_64-linux-gnu/' '--with-x=yes' '--with-x-toolkit=gtk3' '--with-imagemagick=yes' 'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu' 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=uim
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: C++/l

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

-- 
Kanru

[test.cpp (text/x-c++src, attachment)]

Message #8 received at 10288 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> gnu.org>
To: Alan Mackenzie  <acm <at> muc.de>
Cc: 10288 <at> debbugs.gnu.org, Kan-Ru Chen <kanru <at> kanru.info>
Subject: Re: bug#10288: 24.0.92;
	font-lock-mode/c++-mode extremely slow on this file
Date: Fri, 27 Jan 2012 15:58:29 +0800

Kan-Ru Chen <kanru <at> kanru.info> writes:

> File attached.
>
> $ emacs -Q -nw test.cpp
>
> Emacs become slow to complete unresponsive if the pointer was in the
> middle of the initializer.

Was this bug the one recently fixed in trunk, as discussed in the "Slow
fontification in C mode buffers" emacs-devel thread (in which case it
should be closed)?  Or is it a separate issue?

Message #13 received at 10288-done <at> debbugs.gnu.org (full text, mbox):

From: Alan Mackenzie <acm <at> muc.de>
To: 10288-done <at> debbugs.gnu.org
Subject: Bug fixed.
Date: Fri, 27 Jan 2012 10:45:44 +0000

This bug was fixed in revision #106889.

-- 
Alan Mackenzie (Nuremberg, Germany).

Message #16 received at 10288 <at> debbugs.gnu.org (full text, mbox):

From: Alan Mackenzie <acm <at> muc.de>
To: Chong Yidong <cyd <at> gnu.org>
Cc: 10288 <at> debbugs.gnu.org, Kan-Ru Chen <kanru <at> kanru.info>
Subject: Re: bug#10288: 24.0.92; font-lock-mode/c++-mode extremely slow on
	this file
Date: Fri, 27 Jan 2012 10:47:59 +0000

On Fri, Jan 27, 2012 at 03:58:29PM +0800, Chong Yidong wrote:
> Kan-Ru Chen <kanru <at> kanru.info> writes:

> > File attached.

> > $ emacs -Q -nw test.cpp

> > Emacs become slow to complete unresponsive if the pointer was in the
> > middle of the initializer.

> Was this bug the one recently fixed in trunk, as discussed in the "Slow
> fontification in C mode buffers" emacs-devel thread (in which case it
> should be closed)?  Or is it a separate issue?

The fix (revision #106889) solved this bug (#10288) amongst several
related (but not the same) problems.  I've closed #10288 in debbugs.

-- 
Alan Mackenzie (Nuremberg, Germany).

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