bug#72268: 31.0.50; Color emoji rendering

[Manuel Giraud via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

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Hi,

With emacs configured as below, I have a weird rendering for color
emojis:

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In GNU Emacs 31.0.50 (build 37, x86_64-unknown-openbsd7.5) of 2024-07-24
 built on computer
Repository revision: 135ce96f1efd051c7bdd1a95670465a09502fa55
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101013
System Description: OpenBSD computer 7.5 GENERIC.MP#198 amd64

Configured using:
 'configure CC=egcc CPPFLAGS=-I/usr/local/include
 LDFLAGS=-L/usr/local/lib MAKEINFO=gmakeinfo --prefix=/home/manuel/emacs
 --bindir=/home/manuel/bin --with-x-toolkit=no --without-cairo
 --without-compress-install'

Configured features:
DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG LCMS2 LIBOTF
LIBXML2 MODULES NOTIFY KQUEUE OLDXMENU PDUMPER PNG RSVG SQLITE3 THREADS
TIFF TREE_SITTER WEBP X11 XDBE XFT XIM XINPUT2 XPM ZLIB

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

Major mode: Dired by name

Minor modes in effect:
  pdf-occur-dired-minor-mode: t
  gnus-dired-mode: t
  display-time-mode: t
  display-battery-mode: t
  desktop-save-mode: t
  exwm-randr-mode: t
  server-mode: t
  electric-pair-mode: t
  override-global-mode: t
  repeat-mode: t
  global-eldoc-mode: t
  show-paren-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
  minibuffer-regexp-mode: t
  buffer-read-only: 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/manuel/prog/elisp/exwm/exwm-randr hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-randr
/home/manuel/prog/elisp/exwm/exwm hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm
/home/manuel/prog/elisp/exwm/exwm-xsettings hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-xsettings
/home/manuel/prog/elisp/exwm/exwm-xim hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-xim
/home/manuel/prog/elisp/exwm/exwm-workspace hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-workspace
/home/manuel/prog/elisp/exwm/exwm-systemtray hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-systemtray
/home/manuel/prog/elisp/exwm/exwm-manage hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-manage
/home/manuel/prog/elisp/exwm/exwm-layout hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-layout
/home/manuel/prog/elisp/exwm/exwm-input hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-input
/home/manuel/prog/elisp/exwm/exwm-floating hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-floating
/home/manuel/prog/elisp/exwm/exwm-core hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-core
/home/manuel/prog/elisp/exwm/exwm-config hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-config
/home/manuel/prog/elisp/exwm/exwm-background hides /home/manuel/.emacs.d/elpa/exwm-0.31/exwm-background
/home/manuel/.emacs.d/elpa/ef-themes-1.7.0/theme-loaddefs hides /home/manuel/emacs/share/emacs/31.0.50/lisp/theme-loaddefs

Features:
(shadow emacsbug help-fns radix-tree descr-text wdired gnus-dup
display-line-numbers debbugs-gnu debbugs-compat debbugs soap-client
rng-xsd rng-dt rng-util xsd-regexp debbugs-browse add-log vc-hg vc-bzr
vc-src vc-sccs vc-svn term ehelp pulse mailalias smtpmail gnus-delay
gnus-draft sort gnus-cite flow-fill mail-extr textsec uni-scripts
idna-mapping ucs-normalize uni-confusable textsec-check gnus-bcklg
gnus-async qp gnus-ml tramp-cmds tramp-cache time-stamp tramp-sh
gnus-topic mm-archive url-cache utf-7 imap rfc2104 nndoc nndraft nnmh
network-stream nnfolder nnml gnus-agent gnus-srvr gnus-score score-mode
nnvirtual nntp gnus-cache nnrss pdf-history pdf-outline pdf-links
pdf-annot facemenu pdf-sync org-indent org-agenda texinfo
texinfo-loaddefs view flymake-cc flymake warnings python conf-mode
vc-cvs vc-rcs log-view pcvs-util make-mode oc-basic org-element
org-persist org-id org-element-ast inline avl-tree ol-eww eww url-queue
mm-url ol-rmail ol-mhe ol-irc ol-info ol-gnus nnselect ol-docview
doc-view filenotify ol-bibtex bibtex ol-bbdb ol-w3m ol-doi org-link-doi
gnus-icalendar org-capture org-refile org ob ob-tangle ob-ref ob-lob
ob-table ob-exp org-macro org-src ob-comint org-pcomplete org-list
org-footnote org-faces org-entities org-version ob-emacs-lisp ob-core
ob-eval org-cycle org-table ol org-fold org-fold-core org-keys oc
org-loaddefs org-compat org-macs emacs-news-mode whitespace sh-script
smie treesit executable mule-util on-screen gud bug-reference pdf-occur
ibuf-ext ibuffer ibuffer-loaddefs tablist 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 imenu
pdf-tools cus-edit cus-start pdf-view bookmark jka-compr pdf-cache
pdf-info tq pdf-util pdf-macs image-mode exif gnus-dired vc-dir ewoc vc
vc-git diff-mode track-changes vc-dispatcher time battery cus-load
desktop frameset exwm-randr xcb-randr exwm exwm-input xcb-keysyms
xcb-xkb exwm-manage exwm-floating xcb-cursor xcb-render exwm-layout
exwm-workspace exwm-core xcb-ewmh xcb-icccm xcb xcb-xproto xcb-types
xcb-debug server ef-kassio-theme ef-themes modus-operandi-theme
modus-themes zone speed-type url-http url-auth url-gw nsm ytdious
mpdired transmission color calc-bin calc-ext calc calc-loaddefs rect
calc-macs supercite regi ebdb-gnus gnus-msg 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 dbus xml
gnus-cloud nnimap nnmail mail-source utf7 nnoo gnus-spec gnus-int
gnus-range gnus-win ebdb-message message sendmail yank-media puny rfc822
mml mml-sec epa epg rfc6068 epg-config mm-decode mm-bodies mm-encode
mail-parse rfc2231 rfc2047 rfc2045 ietf-drums gmm-utils mailheader
ebdb-mua ebdb-com crm ebdb-format ebdb mailabbrev eieio-opt speedbar
ezimage dframe find-func eieio-base timezone icalendar gnus nnheader
gnus-util mail-utils range mm-util mail-prsvr wid-edit web-mode derived
disp-table erlang-start skeleton cc-mode cc-fonts cc-guess cc-menus
cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs slime-asdf grep
slime-tramp tramp rx trampver tramp-integration files-x tramp-message
tramp-compat xdg shell pcomplete parse-time iso8601 time-date
format-spec tramp-loaddefs slime-fancy slime-indentation slime-cl-indent
cl-indent slime-trace-dialog slime-fontifying-fu slime-package-fu
slime-references slime-compiler-notes-tree advice slime-scratch
slime-presentations bridge slime-macrostep macrostep compat
slime-mdot-fu slime-enclosing-context slime-fuzzy slime-fancy-trace
slime-fancy-inspector slime-c-p-c slime-editing-commands slime-autodoc
slime-repl slime-parse slime apropos compile text-property-search etags
fileloop generator xref project arc-mode archive-mode noutline outline
pp comint ansi-osc ansi-color ring hyperspec thingatpt elec-pair edmacro
kmacro use-package-bind-key bind-key appt diary-lib diary-loaddefs
cal-menu calendar cal-loaddefs pcase dired-x dired-aux dired
dired-loaddefs use-package-core repeat easy-mmode calfw-autoloads
calfw-cal-autoloads calfw-org-autoloads debbugs-autoloads ebdb-autoloads
cl-extra help-mode ef-themes-autoloads exwm-autoloads
hyperbole-autoloads kotl-autoloads hact set hhist on-screen-autoloads
osm-autoloads pdf-tools-autoloads rust-mode-autoloads info
slime-autoloads macrostep-autoloads speed-type-autoloads
tablist-autoloads transmission-autoloads xelb-autoloads
ytdious-autoloads 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 kqueue lcms2 dynamic-setting system-font-setting
font-render-setting xinput2 x multi-tty move-toolbar
make-network-process emacs)

Memory information:
((conses 16 1213891 456069) (symbols 48 75053 16)
 (strings 32 349900 4926) (string-bytes 1 11815543)
 (vectors 16 190913) (vector-slots 8 2622631 136146)
 (floats 8 828 375) (intervals 56 43854 2390) (buffers 992 189))

-- 
Manuel Giraud