bug#67794: 30.0.50; mouse-face is not respected on SVG images

[Manuel Giraud]

Hi,

The mouse-face text property is not applied on SVG images while other
faces works "correctly".  My recipe:

      0. emacs -Q
      1. Load the following code:
--8<---------------cut here---------------start------------->8---
(defun +insert-stuff ()
  (interactive)
  (let ((str "foobar"))
    (add-text-properties 0 1
                         (list 'display
                               (find-image
                                '((:type xpm :file "close.xpm" :ascent center))
                                t))
                         str)
    (add-text-properties 3 4
                         (list 'display
                               (find-image
                                '((:type svg :file "radio-checked.svg" :ascent 
center))
                                t))
                         str)
    (add-text-properties 0 6
                         (list 'mouse-face '(:background "red" :foreground 
"blue")) str)
    (insert str)))
--8<---------------cut here---------------end--------------->8---
      2. Into a writable buffer, do 'M-x +insert-stuff'

Now a 'C-s foobar' shows the matched string respecting the isearch face
even on the SVG image.  But when, you move your mouse over the "foobar"
string, the SVG image keeps the foreground and background of the default
face.

(note: I have tried to track this down but debugging Emacs display is
*hard*.  I have read and tried the "Debugging Emacs redisplay problems"
section of etc/DEBUG with no luck so far.)

Thanks,


In GNU Emacs 30.0.50 (build 3, x86_64-unknown-openbsd7.4) of 2023-12-11
 built on computer
Repository revision: 6abea4d98d1d964c68a78cb9b5321071da851654
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101009
System Description: OpenBSD computer 7.4 GENERIC.MP#1473 amd64

Configured using:
 'configure 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-dbus --without-gconf --without-gsettings --without-sound
 --without-compress-install'

Configured features:
FREETYPE GIF GLIB GMP GNUTLS HARFBUZZ JPEG JSON 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: Text

Minor modes in effect:
  display-time-mode: t
  display-battery-mode: t
  desktop-save-mode: t
  server-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
  line-number-mode: t
  auto-fill-function: do-auto-fill
  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/.emacs.d/elpa/ef-themes-1.4.0/theme-loaddefs hides 
/home/manuel/emacs/share/emacs/30.0.50/lisp/theme-loaddefs

Features:
(shadow sort mail-extr emacsbug org-agenda vc-cvs vc-rcs log-view
pcvs-util org-indent oc-basic org-element org-persist org-id avl-tree
ol-eww eww url-queue mm-url ol-rmail ol-mhe ol-irc ol-info ol-gnus
nnselect ol-docview doc-view image-mode exif 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 ob-emacs-lisp
ob-core ob-eval org-cycle org-table ol org-fold org-fold-core org-keys
oc org-loaddefs org-version org-compat org-macs sh-script smie treesit
executable vc-hg conf-mode pascal paredit vc-dir ewoc mule-util
jka-compr on-screen autorevert filenotify vc-git diff-mode vc
vc-dispatcher bug-reference gnus-dired time battery cus-load desktop
frameset exwm-randr xcb-randr exwm-config ido 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 modus-operandi-theme modus-themes zone
speed-type url-http url-auth url-gw nsm compat ytdious mingus libmpdee
reporter edebug debug backtrace transmission color calc-bin calc-ext
calc calc-loaddefs rect calc-macs supercite regi ebdb-message 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 gnus-cloud nnimap nnmail mail-source utf7 nnoo
gnus-spec gnus-int gnus-range 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
gnus-win 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
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
icons pp comint ansi-osc ansi-color ring hyperspec thingatpt
slime-autoloads 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 notifications dbus xml cl-extra help-mode
use-package-core repeat easy-mmode debbugs-autoloads ebdb-autoloads
ef-themes-autoloads exwm-autoloads hyperbole-autoloads magit-autoloads
git-commit-autoloads magit-section-autoloads dash-autoloads
on-screen-autoloads osm-autoloads paredit-autoloads rust-mode-autoloads
speed-type-autoloads transmission-autoloads with-editor-autoloads info
compat-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 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 kqueue lcms2 dynamic-setting font-render-setting xinput2 x
multi-tty move-toolbar make-network-process emacs)

Memory information:
((conses 16 692952 74044) (symbols 48 52068 2)
 (strings 32 165492 7209) (string-bytes 1 5372823) (vectors 16 103327)
 (vector-slots 8 2122739 223406) (floats 8 515 178)
 (intervals 56 25843 106) (buffers 992 46))

-- 
Manuel Giraud