GNU bug report logs - #41187
[macOS] 28.0.50; Flipped text

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Wasim Abbas <abbas.wasim <at> gmail.com>
Subject: bug#41187: closed (Re: bug#41187: 28.0.50; Flipped text)
Date: Sat, 02 Jan 2021 22:47:02 +0000

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Your bug report

#41187: [macOS] 28.0.50; Flipped text

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 41187 <at> debbugs.gnu.org.

-- 
41187: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=41187
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Alan Third <alan <at> idiocy.org>
To: Wasim Abbas <abbas.wasim <at> gmail.com>, 41187-done <at> debbugs.gnu.org
Subject: Re: bug#41187: 28.0.50; Flipped text
Date: Sat, 2 Jan 2021 22:46:07 +0000

On Sun, Dec 20, 2020 at 10:50:48AM +0000, Alan Third wrote:
> On Mon, Aug 17, 2020 at 03:17:32PM +0100, Wasim Abbas wrote:
> > Update:
> > 
> > Just managed to reproduce it with `emacs -Q` I just had to scroll
> > for almost 10 minutes for it to kick in. So ignore my init.el red
> > herring.
> 
> Hi Wasim, sorry for the long wait.
> 
> I've been trying to make some improvements to the performance of the
> Emacs NS port, and I think they may help with this problem. Of course,
> I'm not 100% sure the new code works anywhere except my PC yet, but if
> you could give it a go that would be helpful.
> 
> I've pushed to a branch on the Emacs repository called
> scratch/ns/performance. Please give it a go and see if it
> 
> 1. works at all.
> 
> 2. fixes your issue.

I've pushed this fix to the master branch and although I've only seen
the problem Wasim reported once, I expect this to have fixed it.

Wasim, if you're still seeing this problem, please reply to this email
and we'll reopen the bug report.

Thanks!
-- 
Alan Third

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From: Wasim Abbas <abbas.wasim <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; Flipped text
Date: Mon, 11 May 2020 13:00:57 +0100

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Hi folks,

I am seeing this issue on emacs head. The text randomly flips vertically. Very hard to reproduce. But if you open a very long C/C++ file like https://github.com/KhronosGroup/Vulkan-Headers/blob/master/include/vulkan/vulkan_core.h <https://github.com/KhronosGroup/Vulkan-Headers/blob/master/include/vulkan/vulkan_core.h> and keep moving around the buffer, cut 100ish lines and paste in another location and then move around again. You might hit the issue.

Here is a screenshot of it. I haven’t tried with emacs -Q yet but happy to try if required. 



//Wasim



In GNU Emacs 28.0.50 (build 1, x86_64-apple-darwin19.4.0, NS appkit-1894.40 Version 10.15.4 (Build 19E287))
of 2020-05-06 built on Wasims-iMac-Pro.local
Repository revision: 86fef6ab89ee54c6f78bc2064e55c5439e929827
Repository branch: master
Windowing system distributor 'Apple', version 10.3.1894
System Description:  Mac OS X 10.15.4

Recent messages:
Source file ‘/Users/wasimabbas/.emacs.d/init.el’ newer than byte-compiled file; using older file
Turn on helm-projectile key bindings
[yas] Prepared just-in-time loading of snippets successfully. [2 times]
You appear to be setting environment variables ("PATH") in your .bashrc or .zshrc: those files are only read by interactive shells, so you should instead set environment variables in startup files like .profile, .bash_profile or .zshenv.  Refer to your shell’s man page for more info.  Customize ‘exec-path-from-shell-arguments’ to remove "-i" when done, or disable ‘exec-path-from-shell-check-startup-files’ to disable this message.
Warning: /Users/wasimabbas/.emacs.d/init.el is newer than /Users/wasimabbas/.emacs.d/init.elc
For information about GNU Emacs and the GNU system, type C-h C-a.

Configured using:
'configure --enable-locallisppath=/usr/local/share/emacs/site-lisp
--infodir=/usr/local/Cellar/emacs-head/HEAD-86fef6a_1/share/info/emacs
--prefix=/usr/local/Cellar/emacs-head/HEAD-86fef6a_1 --without-x
--without-dbus --with-imagemagick --with-json --with-modules
--with-gnutls --with-rsvg --with-xml2 --with-harfbuzz --with-ns
--disable-ns-self-contained'

Configured features:
JPEG TIFF GIF PNG RSVG IMAGEMAGICK GLIB NOTIFY KQUEUE ACL GNUTLS LIBXML2
ZLIB TOOLKIT_SCROLL_BARS NS MODULES THREADS JSON PDUMPER LCMS2 GMP

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

Major mode: Lisp Interaction

Minor modes in effect:
  which-key-mode: t
  save-place-mode: t
  global-hl-line-mode: t
  show-paren-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  pyvenv-mode: t
  projectile-mode: t
  helm-mode: t
  async-bytecomp-package-mode: t
  helm-autoresize-mode: t
  helm--remap-mouse-mode: t
  global-display-line-numbers-mode: t
  display-line-numbers-mode: t
  global-evil-mc-mode: t
  evil-mc-mode: t
  global-evil-surround-mode: t
  evil-surround-mode: t
  evil-leader-mode: t
  global-evil-search-highlight-persist: t
  evil-search-highlight-persist: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  shell-dirtrack-mode: t
  evil-mode: t
  evil-local-mode: t
  flycheck-pos-tip-mode: t
  global-flycheck-mode: t
  flycheck-mode: t
  global-company-mode: t
  company-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-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

Load-path shadows:
/Users/wasimabbas/.emacs.d/elpa/cmake-mode-20190710.1319/cmake-mode hides /usr/local/share/emacs/site-lisp/cmake/cmake-mode

Features:
(shadow sort mail-extr emacsbug message dired dired-loaddefs rfc822 mml
mml-sec epa derived epg epg-config gnus-util rmail rmail-loaddefs
text-property-search mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils winner helm-command helm-elisp helm-eval
edebug backtrace helm-info company-keywords company-dabbrev-code
company-dabbrev company-files sanityinc-tomorrow-eighties-theme
color-theme-sanityinc-tomorrow exec-path-from-shell diminish which-key
saveplace string-inflection hl-line paren server init-lsp lsp-sourcekit
lsp lsp-ui lsp-ui-flycheck lsp-ui-doc goto-addr lsp-ui-imenu lsp-ui-peek
lsp-ui-sideline lsp-mode url-util tree-widget spinner network-stream
puny nsm rmc markdown-mode noutline outline lv inline imenu ht
filenotify f ewoc em-glob dash-functional bindat init-cmake
company-cmake init-python yasnippet-snippets cl-extra yasnippet
highlight-indentation flymake-proc flymake warnings company-capf
help-fns radix-tree elpy elpy-rpc pyvenv eshell esh-cmd esh-ext esh-opt
esh-proc esh-io esh-arg esh-module esh-groups esh-util elpy-shell
elpy-profile elpy-django s elpy-refactor python tramp-sh tramp
tramp-loaddefs trampver tramp-integration tramp-compat parse-time
iso8601 ls-lisp ido files-x etags fileloop generator xref project
init-c-cpp company-c-headers init-mappings init-neotree neotree
init-magit init-common posframe init-helm cus-edit cus-start cus-load
wid-edit helm-projectile projectile grep compile ibuf-ext ibuffer
ibuffer-loaddefs helm-misc helm-mode helm-files helm-buffers helm-occur
helm-tags helm-locate helm-grep helm-regexp format-spec helm-utils
helm-help helm-types helm-config helm-easymenu async-bytecomp helm
helm-source eieio-compat helm-multi-match helm-lib async init-linum
display-line-numbers init-powerline powerline-evil powerline-evil-themes
powerline powerline-separators color powerline-themes init-evil
evil-nerd-commenter evil-nerd-commenter-operator evil-nerd-commenter-sdk
sgml-mode dom evil-mc evil-mc-command-execute evil-mc-command-record
evil-mc-cursor-make evil-mc-region evil-mc-cursor-state evil-mc-undo
evil-mc-vars evil-mc-known-commands evil-mc-common evil-surround
init-leader evil-leader evil-search-highlight-persist highlight evil
evil-keybindings evil-integration undo-tree diff evil-maps evil-commands
reveal flyspell ispell evil-jumps evil-command-window evil-types
evil-search evil-ex shell pcomplete comint evil-macros evil-repeat
evil-states evil-core advice evil-common windmove thingatpt rect
evil-digraphs evil-vars ring init-flycheck flycheck-pos-tip pos-tip
flycheck ansi-color find-func help-mode rx init-company company edmacro
kmacro pcase init-packages time-date auto-package-update easy-mmode
finder-inf dash info package easymenu browse-url url-handlers url-parse
auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs
password-cache json subr-x map url-vars seq byte-opt gv bytecomp
byte-compile cconv cl-loaddefs cl-lib tooltip eldoc electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel term/ns-win ns-win
ucs-normalize mule-util 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 kqueue cocoa ns
lcms2 multi-tty make-network-process emacs)

Memory information:
((conses 16 683783 130310)
(symbols 48 36618 167)
(strings 32 309346 20525)
(string-bytes 1 12842127)
(vectors 16 59214)
(vector-slots 8 703528 109252)
(floats 8 332 494)
(intervals 56 435 608)
(buffers 992 11))

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