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bug#17837: 24.4.50; Search very slow

From: Richard Stallman
Subject: bug#17837: 24.4.50; Search very slow
Date: Mon, 23 Jun 2014 11:26:46 -0400

Visit stallman.org/archives/2014-mar-jun.html and type `C-s
interview'.  It takes a long time.  Repeat with C-s a few times; each
time, it takes a long time.

Disable Font Lock mode, and it becomes nice and fast.

I get the impression that searching fontifies all the text
it moves through.  Is that really necessary?  It is a big pain in the neck.

In GNU Emacs (mips64el-unknown-linux-gnu, GTK+ Version 2.20.1)
 of 2014-06-02 on chiefs-gnewsense
Repository revision: 117230 address@hidden
System Description:     gNewSense GNU/Linux 3.0 (parkes)

Configured using:
 `configure 'CFLAGS=-O0 -g''

Configured features:

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: RMAIL

Minor modes in effect:
  diff-auto-refine-mode: t
  shell-dirtrack-mode: t
  gpm-mouse-mode: t
  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
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
R TAB RET C-a C-p C-p C-@ C-n C-n C-n ESC w C-x b R 
TAB RET C-x b c a l l s RET C-s m o g l e n C-a C-n 
C-o C-o SPC SPC L a SPC a b o u t C-a ESC f w C-e SPC 
: r e a l ESC b DEL " C-e SPC n a m e " . C-x C-s C-x 
b RET C-@ C-p C-p C-p r ESC , RET D o e s SPC C-a C-k 
C-o T h a t SPC a r t i c l e SPC t a o k DEL DEL l 
k s SPC a b o u t SPC u s i n g SPC G o o g l e + . 
RET I f SPC y o u SPC m a k e SPC a SPC g DEL G o o 
g l e SPC a c c t SPC a n d SPC d o n ' t SPC u s e 
SPC G o o g l e + C-a ESC f ESC f ESC f ESC f ESC f 
ESC f SPC f o r SPC l o a d i n g SPC a p p s C-e , 
RET d o e s SPC G o o g l e SPC s t i l l SPC r e q 
u i r e SPC y o u r SPC r e a l SPC n a m e ? ESC ; 
C-c C-c ESC < C-x 1 d u o g o o g l e . x TAB RET d 
d x ESC x r e p o r t SPC e m a c s SPC b u g RET

Recent messages:
Saving file /home/rms/calls...
Wrote /home/rms/calls
Mark set [2 times]
Mark set
Wrote /home/rms/outgoing/out-6
Added to /home/rms/xmail/google.xmail
Expunging deleted messages...done

Load-path shadows:
/home/rms/emacs-bzr/trunk/lisp/leim/quail/lao hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/georgian hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/thai hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/ethiopic hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/japanese hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/cyrillic hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/indian hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/hebrew hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/greek hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/czech hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/slovak hides 
/home/rms/emacs-bzr/trunk/lisp/leim/quail/tibetan hides 
/home/rms/emacs-bzr/trunk/lisp/emulation/crisp hides 
/home/rms/emacs-bzr/trunk/lisp/emulation/tpu-extras hides 
/home/rms/emacs-bzr/trunk/lisp/emulation/tpu-edt hides 
/home/rms/emacs-bzr/trunk/lisp/emulation/tpu-mapper hides 
/home/rms/emacs-bzr/trunk/lisp/iswitchb hides 
/home/rms/emacs-bzr/trunk/lisp/emulation/vip hides 
/home/rms/emacs-bzr/trunk/lisp/emulation/vi hides 
/home/rms/emacs-bzr/trunk/lisp/emulation/ws-mode hides 
/home/rms/emacs-bzr/trunk/lisp/emacs-lisp/gulp hides 

(shadow emacsbug vc-arch vc-mtn vc-hg vc-git vc-sccs vc-svn vc-rcs
two-column cal-china lunar solar cal-dst cal-bahai cal-islam
cal-hebrew holidays hol-loaddefs battery calc calc-loaddefs calc-macs
compare-w tmm tabify imenu man vc-bzr find-func debug gnus-util
mailcap doc-view image-mode cl-loaddefs cl-lib tar-mode cal-move
cal-menu calendar cal-loaddefs novice ispell rmailkwd rect log-edit
pcvs-util add-log diff-mode easy-mmode vc vc-dispatcher parse-time
vc-cvs sgml-mode mule-util etags jka-compr dired-aux dabbrev quail
help-mode shell pcomplete grep compile comint ansi-color ring rmailout
misearch multi-isearch epa-mail mailalias epa derived epg epg-config
qp rmailsum rmailmm message sendmail format-spec rfc822 mml easymenu
mml-sec mm-decode mm-bodies mm-encode mailabbrev gmm-utils mailheader
mail-parse rfc2231 dired t-mouse package rmailedit rmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils time-date paren
cus-start cus-load advice help-fns tooltip electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd
fontset image regexp-opt fringe tabulated-list newcomment lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev
minibuffer nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
dbusbind gfilenotify dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)

Memory information:
((conses 8 375295 107675)
 (symbols 24 26751 0)
 (miscs 20 2896 4794)
 (strings 16 48615 15393)
 (string-bytes 1 1436460)
 (vectors 8 29108)
 (vector-slots 4 1480714 54740)
 (floats 8 639 253)
 (intervals 28 71956 4232)
 (buffers 512 173)
 (heap 1024 23318 1739))
[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
www.fsf.org  www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
  Use Ekiga or an ordinary phone call.

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