Bug#1018870: libgtksourceview-4-common: Gedit php syntax highlighting

[Pascal]

Package: libgtksourceview-4-common
Version: 4.8.3-1
Severity: minor

Dear Maintainer,

Hello,
since the last update of gedit, syntax highlighting does not work anymore in
gedit for php language.
I have this error message:
gedit[80509]: Failed to load '/usr/share/gtksourceview-4/language-
specs/php.lang': Error while compiling regular expression
'(?-ix)[$]+(?:(?-ix)[a-zA-Z_\x{80}-\x{10ffff}][a-zA-Z0-9_\x{80}-\x{10ffff}]*)'
at char 35: range downgraded in character class


"php.lang" file seems to come from the "libgtksourceview-4-common" package.
The package "libgtksourceview-4-common" is installed and the file
"/usr/share/gtksourceview-4/language-specs/php.lang" exists.

What could be the problem ?

Thanks for your help

Pascal


-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
merged-usr: no
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.18.0-4-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

-- no debconf information