bug#71741: 30.0.60; Wrong type argument: number-or-marker-p after C-x C-+ in eww

[epg@pretzelnet.org]

jj
fb

To reproduce:
- emacs -Q
- M-x eww RET gnu.org RET C-x C-+

Expected:
Text is scaled up without error.

Actual:
Text is scaled up, but with an error:

run-hooks: Wrong type argument: number-or-marker-p, default

Bug is present as late as commit
cace0cbee93f2a7f70a14a8445abcd176d3b3af2 but started here:

commit 56376585134d627f96c71b7b063ec51548d3ad3f
Author: Po Lu <luangruo@yahoo.com>
Date:   Mon Jun 3 03:34:51 2024

    Maintain relationship between tool bar image and default font width




In GNU Emacs 30.0.60 (build 1, x86_64-pc-linux-gnu, X toolkit,
 cairo version 1.18.0) of 2024-06-23 built on dogato
Repository revision: cace0cbee93f2a7f70a14a8445abcd176d3b3af2
Repository branch: emacs-30
Windowing system distributor 'The X.Org Foundation', version 11.0.12101012
System Description: openSUSE Tumbleweed

Configured using:
 'configure -C --prefix=/opt/emacs-30.0.60.1.cace0cbee93
 --disable-silent-rules --with-x-toolkit=athena --without-sqlite3
 --without-lcms2 --without-libsystemd --without-imagemagick
 --with-json --with-tree-sitter --without-xft --without-libotf
 --without-toolkit-scroll-bars --without-xaw3d --without-gpm
 --without-dbus --without-gconf --without-gsettings
 --without-selinux --without-compress-install --with-x'

Configured features:
CAIRO FREETYPE GIF GLIB GMP GNUTLS HARFBUZZ JPEG LIBXML2 MODULES
NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF
TREE_SITTER WEBP X11 XDBE XIM XINPUT2 XPM LUCID ZLIB

Important settings:
  value of $LC_CTYPE: en_US.UTF-8
  value of $XMODIFIERS: @im=local
  locale-coding-system: utf-8-unix

Major mode: Group

Minor modes in effect:
  gnus-undo-mode: t
  server-mode: t
  tooltip-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
  minibuffer-regexp-mode: t
  buffer-read-only: t
  line-number-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow emacsbug face-remap shr-color color url-http url-gw
url-auth eww xdg mm-url ffap shell pcomplete dired-aux etags
fileloop cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles
cc-align cc-engine cc-vars cc-defs mule-util cl-extra sort
gnus-cite mm-archive mail-extr textsec uni-scripts idna-mapping
ucs-normalize uni-confusable textsec-check gnus-async gnus-bcklg
qp gnus-ml disp-table misearch multi-isearch nndraft nnmh utf-7
network-stream nsm nnfolder nnnil gnus-agent gnus-srvr gnus-score
score-mode nnvirtual gnus-msg gnus-art mm-uu mml2015 mm-view
mml-smime smime gnutls dig nntp gnus-cache gnus-sum gnus-group
gnus-undo gnus-start gnus-dbus dbus gnus-cloud nnimap nnmail
mail-source utf7 nnoo parse-time iso8601 gnus-spec gnus-int
gnus-range gnus-win gnus nnheader range server elfeed-show
elfeed-search wid-edit bookmark message sendmail yank-media dired
dired-loaddefs rfc822 mml mml-sec epa epg rfc6068 epg-config
gnus-util mm-decode mm-bodies mm-encode mail-parse rfc2231
rfc2047 rfc2045 mm-util ietf-drums mail-prsvr mailabbrev
mail-utils gmm-utils mailheader shr pixel-fill kinsoku puny svg
dom elfeed-csv elfeed elfeed-curl elfeed-log elfeed-db elfeed-lib
time-date avl-tree generator url-queue url-file browse-url
xml-query xml rust-utils rust-mode derived rust-rustfmt
rust-playpen rust-compile rust-cargo eglot external-completion
jsonrpc xref flymake thingatpt project compat diff ert pp ewoc
debug backtrace help-mode find-func filenotify warnings compile
text-property-search imenu ob-sql ob ob-tangle ol org-src
sh-script rx smie treesit executable ob-ref ob-lob ob-table
ob-exp ob-comint comint ansi-osc ansi-color ring ob-core
org-cycle org-fold org-fold-core ob-eval org-keys oc org-compat
org-macs format-spec pcase vc-git diff-mode track-changes
easy-mmode vc-dispatcher url-cache url url-proxy url-privacy
url-expand url-methods url-history url-cookie generate-lisp-file
url-domsuf mailcap url-util url-parse auth-source cl-seq eieio
eieio-core cl-macs icons cl-loaddefs cl-lib password-cache json
subr-x map byte-opt gv bytecomp byte-compile url-vars 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 inotify
dynamic-setting font-render-setting cairo x-toolkit xinput2 x
multi-tty move-toolbar make-network-process emacs)

Memory information:
((conses 16 833499 174307) (symbols 48 26264 22) (strings 32 171149 24275)
 (string-bytes 1 67514869) (vectors 16 69413) (vector-slots 8 883100 260093)
 (floats 8 379 11068) (intervals 56 23537 2101) (buffers 992 26))

-- 
Eric Gillespie  <*>  epg@pretzelnet.org