🚀 go-pugleaf

In GNU Emacs 19.25.1 of Mon Aug 15 1994 on euler.Berkeley.EDU (mips-dec-ultrix4.2)

Operating System:	RISC Ultrix V4.2A
Modifications:		none
Configuration:		configure --with-x --with-gcc=no
Compiler:		RISC Ultrix V4.2A /usr/bin/cc
CFLAGS:			-O -Wf,-XNh2000 -Olimit 2000
Window Server:		RISC Ultrix V4.2A /usr/bin/Xws
Window Manager:		RISC Ultrix V4.2A /usr/bin/X11/twm
~/.Xresources/Xrdb:	none
~/.Xdefaults*:		none

and

Operating System:	DEC OSF/1 V2.0
Modifications:		gatekeeper.dec.com:pub/GNU/emacs-19.25-alpha-patch.gz
Configuration:		configure --with-x --with-gcc=no
Compiler:		DEC OSF/1 V2.0 /usr/bin/cc
CFLAGS:			-O
Window Server:		DEC OSF/1 V2.0 /usr/bin/X11/X
Window Manager:		DEC OSF/1 V2.0 /usr/bin/X11/twm
~/.Xresources/Xrdb:	none
~/.Xdefaults*:		none

Emacs invocation:	emacs -q
Twm invocation:		twm	# using /usr/lib/X11/twm/system.twmrc

Problem:

Emacs dies when twm exits/is killed (also sometimes when twm is reset,
especialy if customized xrdb settings are loaded) with an error message

X protocol error: BadWindow (invalid Window parameter) on protocol request 40

This does not happen to other windows, e.g. xterm.  In addition, emacs
does not exit when mwm is used (with /usr/lib/X11/system.mwmrc)
instead of twm and mwm is exited/killed (or reset).  Thank you very
much.