bug#72573: 29.4; js-mode/JSX: forward-sexp behavior at end of string in JSX fragments

[Daan Ro <daanturo@gmail.com>]

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Unexpected forward-sexp behavior at the end of strings in JSX fragments

* Reproduce
1. Create file.jsx:

```jsx
function Foo() {
// cursor at the end of "cacaca", `forward-sexp-default-function'
return (
<div>
<h1 className="cacaca|">
hello world
<h2 id="h2-id"></h2>
</h1>
</div>
);
}

```
2. Put cursor at the end of "cacaca" (before the closing double quote)
3. `C-M-f`/`forward-sexp`

* Observed: Cursor moves to the beginning of "h2-id".
* Expected: Cursor stays without moving.

In GNU Emacs 29.4 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.42,
cairo version 1.18.0)
System Description: Arch Linux

Configured using:
'configure --with-pgtk --with-native-compilation=aot --sysconfdir=/etc
--prefix=/usr --libexecdir=/usr/lib --with-tree-sitter
--localstatedir=/var --with-cairo --disable-build-details
--with-harfbuzz --with-libsystemd --with-modules '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=/build/emacs/src=/usr/src/debug/emacs -flto=auto'
'LDFLAGS=-Wl,-O1 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro
-Wl,-z,now -Wl,-z,pack-relative-relocs -flto=auto'
'CXXFLAGS=-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 -Wp,-D_GLIBCXX_ASSERTIONS -g
-ffile-prefix-map=/build/emacs/src=/usr/src/debug/emacs -flto=auto''

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY
PDUMPER PGTK PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM GTK3 ZLIB

Important settings:
value of $LANG: en_GB.UTF-8
value of $XMODIFIERS: @im=fcitx
locale-coding-system: utf-8-unix

Major mode: JavaScript[JSX]
Minor modes in effect:
winner-mode: t
savehist-mode: t
recentf-mode: t
minibuffer-depth-indicate-mode: t
global-display-line-numbers-mode: t
display-line-numbers-mode: t
electric-pair-mode: t
delete-selection-mode: t
cua-mode: t
fido-vertical-mode: t
icomplete-vertical-mode: t
icomplete-mode: t
fido-mode: t
tooltip-mode: t
global-eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
context-menu-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-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:
None found.

Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search time-date mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils comp comp-cstr
warnings icons rx cl-extra help-mode vc-git diff-mode easy-mmode
vc-dispatcher js c-ts-common treesit json subr-x map byte-opt bytecomp
byte-compile imenu cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles
cc-align cc-engine cc-vars cc-defs emacs-my-q winner ring savehist
recentf tree-widget wid-edit mb-depth display-line-numbers elec-pair
delsel cua-base icomplete my-functions-for--quick cl-seq cl-macs gv
cl-loaddefs cl-lib rmc iso-transl tooltip cconv eldoc paren electric
uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
term/pgtk-win pgtk-win term/common-win pgtk-dnd 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
dynamic-setting system-font-setting font-render-setting cairo gtk pgtk
lcms2 multi-tty make-network-process native-compile emacs)

Memory information:
((conses 16 143066 6481)
(symbols 48 11130 0)
(strings 32 33669 1919)
(string-bytes 1 1198850)
(vectors 16 22493)
(vector-slots 8 439310 15535)
(floats 8 52 38)
(intervals 56 469 0)
(buffers 984 13))

Daanturo


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