GNU bug report logs - #73600
31.0.50; Visual wrap prefix mode and image display

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From: Gautier Ponsinet <gautier <at> gautierponsinet.xyz>
To: 73600 <at> debbugs.gnu.org
Subject: bug#73600: 31.0.50; Visual wrap prefix mode and image display
Date: Wed, 02 Oct 2024 16:04:02 +0300

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

Hello everyone,

The mode visual-wrap-prefix-mode sometimes causes images to be displayed
incorrectly in emacs (in a mosaic-like way).

To this mail are attached screenshots of the problem and the image file
used in the screenshots which is from wikipedia:
- https://fr.wikipedia.org/wiki/Olcades
- https://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Iberia_300BC-fr.svg/langfr-873px-Iberia_300BC-fr.svg.png

Note that the error does not occur with all images, but I am not able to
identify which characteristic of an image makes the problem appear.
Still, I have encountered the problem with multiple image files.

In emacs -Q:
- enable global-visual-wrap-prefix-mode,
- open the attached image.

All the best,
Gautier.

[873px-Iberia_300BC-fr.svg.png (image/png, attachment)]

[visual-wrap-prefix-mode-disabled.jpg (image/jpeg, attachment)]

[visual-wrap-prefix-mode-enabled.jpg (image/jpeg, attachment)]

[Message part 5 (text/plain, inline)]

========================================================================
In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo
 version 1.18.2, Xaw3d scroll bars) of 2024-10-02 built on
 gautier-laptop
Repository revision: 4bb62af3263057312021e076dc7e0c8ff195e38f
Repository branch: makepkg
Windowing system distributor 'The X.Org Foundation', version 11.0.12101013
System Description: Arch Linux

Configured using:
 'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
 --localstatedir=/var --mandir=/usr/share/man --with-gameuser=:games
 --with-modules --without-m17n-flt --without-gconf
 --with-native-compilation=yes --with-xinput2 --with-x-toolkit=lucid
 --without-xft --with-xaw3d --with-sound=no --with-tree-sitter
 --without-gpm --without-compress-install
 '--program-transform-name=s/\([ec]tags\)/\1.emacs/'
 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions
 -Wp,-D_FORTIFY_SOURCE=3 -Wformat -Werror=format-security
 -fstack-clash-protection -fcf-protection -fno-omit-frame-pointer
 -mno-omit-leaf-frame-pointer -g
 -ffile-prefix-map=/home/gautier/Documents/Sources/AUR/emacs-git/src=/usr/src/debug/emacs-git
 -flto=auto' 'LDFLAGS=-Wl,-O1 -Wl,--sort-common -Wl,--as-needed
 -Wl,-z,relro -Wl,-z,now -Wl,-z,pack-relative-relocs -flto=auto''

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG
LCMS2 LIBOTF LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY
PDUMPER PNG RSVG SECCOMP SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS
TREE_SITTER WEBP X11 XAW3D XDBE XIM XINPUT2 XPM LUCID ZLIB

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

Major mode: Splash Screen

Minor modes in effect:
  visual-fill-column-mode: t
  pdf-occur-global-minor-mode: t
  TeX-PDF-mode: t
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  server-mode: t
  recentf-mode: t
  marginalia-mode: t
  global-corfu-mode: t
  corfu-mode: t
  vertico-mouse-mode: t
  vertico-mode: t
  minibuffer-depth-indicate-mode: t
  delete-selection-mode: t
  global-goto-address-mode: t
  goto-address-mode: t
  pulsar-global-mode: t
  pulsar-mode: t
  lin-global-mode: t
  override-global-mode: t
  winner-mode: t
  repeat-mode: t
  global-visual-wrap-prefix-mode: t
  visual-wrap-prefix-mode: t
  global-word-wrap-whitespace-mode: t
  word-wrap-whitespace-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  window-divider-mode: t
  minibuffer-regexp-mode: t
  column-number-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
/home/gautier/.local/share/emacs/packages/ef-themes-1.8.0/theme-loaddefs hides /home/gautier/.local/share/emacs/packages/modus-themes-20240921.616/theme-loaddefs
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-tag hides /usr/share/emacs/site-lisp/notmuch-tag
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch hides /usr/share/emacs/site-lisp/notmuch
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-wash hides /usr/share/emacs/site-lisp/notmuch-wash
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-maildir-fcc hides /usr/share/emacs/site-lisp/notmuch-maildir-fcc
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-hello hides /usr/share/emacs/site-lisp/notmuch-hello
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-jump hides /usr/share/emacs/site-lisp/notmuch-jump
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-mua hides /usr/share/emacs/site-lisp/notmuch-mua
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-query hides /usr/share/emacs/site-lisp/notmuch-query
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-print hides /usr/share/emacs/site-lisp/notmuch-print
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-compat hides /usr/share/emacs/site-lisp/notmuch-compat
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-company hides /usr/share/emacs/site-lisp/notmuch-company
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-message hides /usr/share/emacs/site-lisp/notmuch-message
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-parser hides /usr/share/emacs/site-lisp/notmuch-parser
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-crypto hides /usr/share/emacs/site-lisp/notmuch-crypto
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-address hides /usr/share/emacs/site-lisp/notmuch-address
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-tree hides /usr/share/emacs/site-lisp/notmuch-tree
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-show hides /usr/share/emacs/site-lisp/notmuch-show
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/coolj hides /usr/share/emacs/site-lisp/coolj
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-draft hides /usr/share/emacs/site-lisp/notmuch-draft
/home/gautier/.local/share/emacs/packages/notmuch-20240816.2039/notmuch-lib hides /usr/share/emacs/site-lisp/notmuch-lib
/home/gautier/.local/share/emacs/packages/transient-20241001.1031/transient hides /usr/share/emacs/31.0.50/lisp/transient
/home/gautier/.local/share/emacs/packages/ef-themes-1.8.0/theme-loaddefs hides /usr/share/emacs/31.0.50/lisp/theme-loaddefs

Features:
(shadow sort mail-extr emacsbug char-fold mule-util visual-fill-column
nov esxml-query pdf-sync pdf-occur ibuf-ext ibuffer ibuffer-loaddefs
tablist advice tablist-filter semantic/wisent/comp semantic/wisent
semantic/wisent/wisent semantic/util-modes semantic/util semantic
semantic/tag semantic/lex semantic/fw mode-local cedet pdf-isearch
let-alist pdf-misc pdf-tools pdf-view pdf-cache pdf-info tq pdf-util
pdf-macs tex texmathp elfeed-show elfeed-search elfeed-csv elfeed
elfeed-curl elfeed-log elfeed-db elfeed-lib xml-query ol-notmuch notmuch
notmuch-tree notmuch-jump notmuch-hello notmuch-show notmuch-print
notmuch-crypto notmuch-mua notmuch-message notmuch-draft
notmuch-maildir-fcc notmuch-address notmuch-company notmuch-parser
notmuch-wash coolj icalendar notmuch-tag notmuch-lib notmuch-version
notmuch-compat org-duration vc-git vc-dispatcher org-contacts
org-capture quail oc-basic disp-table org-habit ol-eww eww url-queue
mm-url ol-rmail ol-mhe ol-irc ol-info ol-gnus nnselect gnus-art mm-uu
mml2015 mm-view mml-smime smime gnutls dig gnus-sum shr pixel-fill
kinsoku url-file svg dom gnus-group gnus-undo gnus-start gnus-dbus
gnus-cloud nnimap nnmail mail-source utf7 nnoo parse-time gnus-spec
gnus-int gnus-range gnus-win gnus nnheader range ol-docview doc-view
jka-compr image-mode exif ol-bibtex bibtex iso8601 ol-bbdb ol-w3m ol-doi
org-link-doi org-agenda embark-org org-element org-persist org-id
org-refile org-element-ast inline avl-tree generator org ob ob-tangle
ob-ref ob-lob ob-table ob-exp org-macro org-src sh-script smie treesit
executable ob-comint org-pcomplete org-list org-footnote org-faces
org-entities noutline outline org-version ob-emacs-lisp ob-core ob-eval
org-cycle org-table ol org-fold org-fold-core org-keys oc org-loaddefs
find-func org-compat org-macs notifications dbus compile xml appt
diary-lib diary-loaddefs cal-menu calendar cal-loaddefs project
magit-extras magit-bookmark magit-submodule magit-blame magit-stash
magit-reflog magit-bisect magit-push magit-pull magit-fetch magit-clone
magit-remote magit-commit magit-sequence magit-notes magit-worktree
magit-tag magit-merge magit-branch magit-reset magit-files magit-refs
magit-status magit magit-repos magit-apply magit-wip magit-log
which-func imenu magit-diff smerge-mode diff diff-mode track-changes
git-commit log-edit message sendmail yank-media puny rfc822 mml mml-sec
epa derived epg rfc6068 epg-config gnus-util time-date mm-decode
mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 mm-util
ietf-drums mail-prsvr mailabbrev mail-utils gmm-utils mailheader
pcvs-util add-log magit-core magit-autorevert autorevert filenotify
magit-margin magit-transient magit-process with-editor comp comp-cstr
warnings comp-run comp-common rx shell pcomplete comint ansi-osc server
ansi-color magit-mode transient benchmark magit-git magit-base
magit-section format-spec cursor-sensor crm dash recentf tree-widget
gnus-dired dired dired-loaddefs embark-consult embark ffap consult
orderless marginalia cape corfu vertico-mouse vertico-directory vertico
mb-depth jinx tempel compat delsel fontaine goto-addr
modus-operandi-theme pulsar pulse color cus-edit cus-load wid-edit lin
hl-line face-remap modus-themes ef-themes edmacro kmacro
use-package-bind-key bind-key easy-mmode use-package-ensure
use-package-core burly frameset thingatpt bookmark text-property-search
pp winner ace-window avy ring repeat visual-wrap word-wrap-mode
ace-window-autoloads auctex-autoloads tex-site avy-autoloads
bbdb-autoloads beframe-autoloads bufferlo-autoloads burly-autoloads
cape-autoloads citar-embark-autoloads citar-autoloads citeproc-autoloads
corfu-autoloads cursory-autoloads debbugs-autoloads
dired-preview-autoloads eat-autoloads ebdb-autoloads cl-extra help-mode
ef-themes-autoloads elfeed-autoloads embark-consult-autoloads
consult-autoloads embark-autoloads expand-region-autoloads f-autoloads
fontaine-autoloads forge-autoloads closql-autoloads emacsql-autoloads
fountain-mode-autoloads ghub-autoloads gnuplot-autoloads
htmlize-autoloads hyperbole-autoloads kotl-autoloads hact set hhist
indent-bars-autoloads jinx-autoloads ledger-mode-autoloads lin-autoloads
magit-autoloads pcase magit-section-autoloads dash-autoloads
marginalia-autoloads markdown-mode-autoloads modus-themes-autoloads
nov-autoloads esxml-autoloads kv-autoloads ol-notmuch-autoloads
notmuch-autoloads orderless-autoloads org-contacts-autoloads
org-modern-autoloads osm-autoloads parsebib-autoloads
pdf-tools-autoloads popper-autoloads pulsar-autoloads queue-autoloads
rainbow-mode-autoloads s-autoloads spacious-padding-autoloads
string-inflection-autoloads tablist-autoloads tempel-autoloads
tmr-autoloads transient-autoloads trashed-autoloads treepy-autoloads
vertico-autoloads visual-fill-column-autoloads wgrep-autoloads info
with-editor-autoloads yaml-autoloads xdg package browse-url url
url-proxy url-privacy url-expand url-methods url-history url-cookie
generate-lisp-file url-domsuf url-util mailcap url-handlers url-parse
auth-source cl-seq eieio eieio-core cl-macs icons password-cache json
subr-x map byte-opt gv bytecomp byte-compile url-vars cl-loaddefs cl-lib
rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win
term/common-win x-dnd touch-screen tool-bar dnd fontset image regexp-opt
fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode
register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors
frame minibuffer nadvice seq simple cl-generic indonesian philippine
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 emoji-zwj charscript
charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure
cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp
files window text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget keymap hashtable-print-readable backquote
threads dbusbind inotify lcms2 dynamic-setting system-font-setting
font-render-setting cairo x-toolkit xinput2 x multi-tty move-toolbar
make-network-process native-compile emacs)

Memory information:
((conses 16 641073 63157) (symbols 48 42867 0) (strings 32 167248 6724)
 (string-bytes 1 5185552) (vectors 16 237023)
 (vector-slots 8 3126477 384380) (floats 8 770 1)
 (intervals 56 1489 224) (buffers 992 15))

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