Sometimes the emacs windows will flicker badly. This often happens when
scrolling, just moving the cursor, or using clicking with the mouse on some part
of the buffer.
It can be reproduced with `emacs -Q` but it is much less pronounced than with my
custom configuration. I can post it if necessary.
The following steps can be useful to reproduce it:
1) Open a long C++ file.
2) Run (setq mouse-wheel-scroll-amount '(1)).
3) Mouse the mouse whell up and down fast.
4) Pay attention to the part of the screen that should show new content.
Sometimes it will flicker a few time before stabilizing.
In GNU Emacs 27.0.90 (build 1, x86_64-w64-mingw32)
of 2020-03-26 built on DESKTOP-0DKLDHI
Repository revision: e1f0e0892232221e6333b24788b97942c83ec738
Repository branch: emacs-27
Windowing system distributor 'Microsoft Corp.', version 10.0.18363
System Description: Microsoft Windows 10 Pro (v10.0.1909.18363.720)
Recent messages:
Sending...
Sending via mail...
<left-fringe> <mouse-1> is undefined
Save this mail sending choice? (y or n) n
Sending...done
Beginning of buffer [2 times]
C-x C-k C-x k is undefined
Quit
ESC ESC M-x is undefined
delete-backward-char: Text is read-only
Configured using:
'configure --prefix=/c/users/nicol/emacs/'
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND DBUS NOTIFY W32NOTIFY ACL GNUTLS
LIBXML2 HARFBUZZ ZLIB TOOLKIT_SCROLL_BARS MODULES THREADS JSON PDUMPER
LCMS2 GMP
Important settings:
value of $LANG: ENG
locale-coding-system: cp1252
Major mode: C++//l
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
electric-indent-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
abbrev-mode: t
Load-path shadows:
None found.
Features:
(kmacro mailalias mailclient browse-url vc-git diff-mode easy-mmode
cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine
cc-vars cc-defs help-mode pp shadow sort mail-extr emacsbug message rmc
puny dired dired-loaddefs format-spec rfc822 mml easymenu mml-sec
password-cache epa derived epg epg-config gnus-util rmail rmail-loaddefs
text-property-search seq byte-opt gv bytecomp byte-compile cconv
mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr
mail-utils time-date subr-x cl-loaddefs cl-lib tooltip eldoc electric
uniquify ediff-hook vc-hooks lisp-float-type mwheel dos-w32 ls-lisp
disp-table term/w32-win w32-win w32-vars term/common-win tool-bar dnd
fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode elisp-mode lisp-mode prog-mode register page tab-bar menu-bar
rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core term/tty-colors frame minibuffer cl-generic
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded 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 threads w32notify
dbusbind w32 lcms2 multi-tty make-network-process emacs)
Memory information:
((conses 16 92013 15535)
(symbols 48 9465 0)
(strings 32 26206 2252)
(string-bytes 1 939680)
(vectors 16 14062)
(vector-slots 8 176785 28090)
(floats 8 33 182)
(intervals 56 3372 30)
(buffers 1000 17))