bug#65567: 30.0.50; font-lock-reference-face appears to be only half-gone

[David Kastrup]

Whenever I read a gnus article with an inline source file (in this case
LilyPond code), I get the following crash:

Debugger entered--Lisp error: (void-variable font-lock-reference-face)
  eval(font-lock-reference-face t)
  #f(compiled-function (highlight) "Apply HIGHLIGHT following a 
match.\nHIGHLIGHT should be of the form MATCH-HIGHLIGHT, see 
`font-lock-keywords'." #<bytecode -0xf53eae0ecf5b08c>)((0 
font-lock-reference-face t))
  font-lock-fontify-keywords-region(1 476 nil)
  font-lock-default-fontify-region(1 476 nil)
  font-lock-fontify-region(1 476)
  #f(compiled-function (beg end) #<bytecode -0x15f4e5c68345f707>)(1 476)
  font-lock-ensure()
  mm-display-inline-fontify((#<buffer  *mm*-971471> ("text/x-lilypond") nil nil 
("inline" (filename . "js.ly")) nil nil nil))
  mm-inline-text((#<buffer  *mm*-971471> ("text/x-lilypond") nil nil ("inline" 
(filename . "js.ly")) nil nil nil))
  mm-display-inline((#<buffer  *mm*-971471> ("text/x-lilypond") nil nil 
("inline" (filename . "js.ly")) nil nil nil))
  gnus-mime-display-single((#<buffer  *mm*-971471> ("text/x-lilypond") nil nil 
("inline" (filename . "js.ly")) nil nil nil))
  gnus-mime-display-part((#<buffer  *mm*-971471> ("text/x-lilypond") nil nil 
("inline" (filename . "js.ly")) nil nil nil))
  mapcar(gnus-mime-display-part ((#<buffer  *mm*-212059> ("text/plain") nil 
#f(compiled-function () #<bytecode 0xd6f85ae254c12cf>) ("inline") nil nil nil) 
(#<buffer  *mm*-971471> ("text/x-lilypond") nil nil ("inline" (filename . 
"js.ly")) nil nil nil) (#<buffer  *mm*-886068> ("text/plain") nil nil 
("inline") nil nil nil)))
  gnus-mime-display-mixed(((#<buffer  *mm*-212059> ("text/plain") nil 
#f(compiled-function () #<bytecode 0xd6f85ae254c12cf>) ("inline") nil nil nil) 
(#<buffer  *mm*-971471> ("text/x-lilypond") nil nil ("inline" (filename . 
"js.ly")) nil nil nil) (#<buffer  *mm*-886068> ("text/plain") nil nil 
("inline") nil nil nil)))
  gnus-mime-display-part((#("multipart/mixed" 0 15 (start nil from 
"dak@gnu.org" buffer #<buffer  *mm*> boundary "=-=-=")) (#<buffer  *mm*-212059> 
("text/plain") nil #f(compiled-function () #<bytecode 0xd6f85ae254c12cf>) 
("inline") nil nil nil) (#<buffer  *mm*-971471> ("text/x-lilypond") nil nil 
("inline" (filename . "js.ly")) nil nil nil) (#<buffer  *mm*-886068> 
("text/plain") nil nil ("inline") nil nil nil)))
  gnus-display-mime()
  gnus-article-prepare-display()
  gnus-article-prepare(157478 nil)
  gnus-summary-display-article(157478 nil)
  gnus-summary-select-article(nil nil pseudo)
  gnus-summary-scroll-up(1)
  funcall-interactively(gnus-summary-scroll-up 1)
  call-interactively(gnus-summary-scroll-up nil nil)
  command-execute(gnus-summary-scroll-up)



In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.38, cairo version 1.17.8) of 2023-08-27 built on lola
Repository revision: d303b0d2e9e4438917f0055c57da24ee17e78dbb
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101007
System Description: Ubuntu Mantic Minotaur (development branch)

Configured using:
 'configure --without-toolkit-scroll-bars'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF WEBP X11 XDBE XIM
XINPUT2 XPM GTK3 ZLIB

Important settings:
  value of $LC_MONETARY: de_DE.UTF-8
  value of $LC_NUMERIC: POSIX
  value of $LC_TIME: de_DE.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Debugger

Minor modes in effect:
  TeX-PDF-mode: t
  minibuffer-electric-default-mode: t
  desktop-save-mode: t
  server-mode: t
  tooltip-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
  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/dak/.emacs.d/elpa/transient-20230810.1716/transient hides 
/usr/local/share/emacs/30.0.50/lisp/transient
/home/dak/.emacs.d/elpa/use-package-20230426.2324/use-package-diminish hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/use-package-diminish
/home/dak/.emacs.d/elpa/use-package-20230426.2324/use-package-jump hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/use-package-jump
/home/dak/.emacs.d/elpa/use-package-20230426.2324/use-package-lint hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/use-package-lint
/home/dak/.emacs.d/elpa/use-package-20230426.2324/use-package-core hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/use-package-core
/home/dak/.emacs.d/elpa/use-package-20230426.2324/use-package-bind-key hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/use-package-bind-key
/home/dak/.emacs.d/elpa/bind-key-20230203.2004/bind-key hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/bind-key
/home/dak/.emacs.d/elpa/use-package-20230426.2324/use-package-delight hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/use-package-delight
/home/dak/.emacs.d/elpa/use-package-20230426.2324/use-package hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/use-package
/home/dak/.emacs.d/elpa/use-package-20230426.2324/use-package-ensure hides 
/usr/local/share/emacs/30.0.50/lisp/use-package/use-package-ensure

Features:
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compat-autoloads package browse-url url url-proxy url-privacy url-expand
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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
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cp51932 hebrew greek romanian slovak czech european ethiopic indian
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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 gtk x-toolkit xinput2 x multi-tty move-toolbar
make-network-process emacs)

Memory information:
((conses 16 623201 84224) (symbols 48 42179 35)
 (strings 32 160023 14445) (string-bytes 1 4806786) (vectors 16 91478)
 (vector-slots 8 1182010 61395) (floats 8 500 233)
 (intervals 56 5304 52) (buffers 984 89))

-- 
David Kastrup