Subject: bug#12363: 24.2.50; pulse.el highlighting causes flickering

From: Dmitry Gutov <[email-masked]>
Date: Thu, 06 Sep 2012 04:15:18 +0400

1. Open some buffer(s) (the more text, the better) in one or several
windows.

2. (require 'pulse)

3. (pulse-momentary-highlight-one-line (point))

4. Observe, for the duration of highlighting pulse, flickering cursor
and text at random places.

I think it's a rather old problem, I remember seeing it with ECB or just
Semantic at least a year ago.

In GNU Emacs 24.2.50.1 (i386-mingw-nt6.1.7601)
  of 2012-09-01 on SOL
Bzr revision: 109843 [email-masked]
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
  `configure --with-gcc (3.4) --cflags -IJ:/Apps/system/gnuwin32/include'

Important settings:
   value of $EMACSDATA: C:/Users/gutov/vc/emacs-bzr/trunk/etc
   value of $EMACSDOC: C:/Users/gutov/vc/emacs-bzr/trunk/etc
   value of $EMACSLOADPATH: 
C:/Users/gutov/vc/emacs-bzr/trunk/site-lisp;C:/Users/gutov/vc/emacs-bzr/trunk/../site-lisp;C:/Users/gutov/vc/emacs-bzr/trunk/lisp;C:/Users/gutov/vc/emacs-bzr/trunk/leim
   value of $EMACSPATH: C:/Users/gutov/vc/emacs-bzr/trunk/bin
   value of $LANG: RUS
   locale-coding-system: cp1251
   default enable-multibyte-characters: t

Major mode: Emacs-Lisp

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
   blink-cursor-mode: t
   auto-composition-mode: t
   auto-encryption-mode: t
   auto-compression-mode: t
   line-number-mode: t
   transient-mark-mode: t

Recent input:
a s d <return> a s <return> d <return> a s d <return>
a <return> s d <return> a s <return> d <return> a s
d <return> <return> a s d d d d d d d d d d d d d d
d d d d d d d d d d d d d d <home> M-: ( r e q u i
r e SPC ' p u l s e . e l <backspace> <backspace> <backspace>
) <return> M-: C-y C-z <S-home> C-y <delete> <delete>
<delete> <delete> <delete> <delete> <delete> <delete>
<delete> <delete> <delete> <delete> <delete> <delete>
<delete> <delete> <delete> <delete> <delete> <delete>
<delete> <delete> <delete> <delete> <delete> <delete>
<delete> <delete> <delete> <delete> <delete> <delete>
<delete> <delete> <delete> <delete> <delete> <delete>
<delete> <delete> <delete> <delete> <delete> <delete>
<delete> <delete> <delete> <delete> <delete> <delete>
<delete> <return> M-: <up> <return> M-: <up> <return>
<down> <return> <return> a s d a s d C-x 3 M-x f i
n d - l i b <tab> SPC p u l s e <backspace> <backspace>
<backspace> <backspace> <backspace> <return> p u l
s e <return> <help-echo> <help-echo> M-: <up> <return>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> M-: <up> <return> M-: <M-up> <return> M-: <up>
<return> M-: <up> <return> M-: <up> <return> M-: <up>
<return> M-: <up> <return> C-x <right> C-x <left> C-x
o C-x 0 M-x r e p o r t <tab> <return>

Recent messages:
Warning: Lisp directory `C:/Users/gutov/vc/emacs-bzr/trunk/../site-lisp' 
does not exist.

For information about GNU Emacs and the GNU system, type C-h C-a.
pulse
delete-forward-char: End of buffer [2 times]
nil [3 times]
byte-code: End of buffer
Loading vc-bzr...done
nil [2 times]
let: End of file during parsing
nil [5 times]

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils vc-bzr thingatpt find-func pulse time-date
tooltip ediff-hook vc-hooks lisp-float-type mwheel dos-w32 disp-table
ls-lisp w32-win w32-vars tool-bar dnd fontset image regexp-opt fringe
tabulated-list newcomment lisp-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 button faces cus-face files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
multi-tty emacs)