Tags: patch See commit message below. I also encourage everyone to set `eieio-backward-compatibility` to nil in their `.emacs`. Stefan In GNU Emacs 31.0.50 (build 2, i686-pc-linux-gnu, GTK+ Version 3.24.48, cairo version 1.18.2) of 2025-03-15 built on alfajor Repository revision: 4a378e3b325ff3cb84307a2ff4d05ab9ffe24905 Repository branch: work Windowing system distributor 'The X.Org Foundation', version 11.0.12101015 System Description: Debian GNU/Linux trixie/sid Configured using: 'configure -C --enable-checking --enable-check-lisp-object-type --with-modules --with-cairo --with-tiff=ifavailable 'CFLAGS=-Wall -g3 -Og -Wno-pointer-sign' PKG_CONFIG_PATH=/home/monnier/lib/pkgconfig'