maintainer-feedback requested: [Bug 259753] xdm should depend on xsm for not returning to loging screen just after login if no .xsession file

Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-x11 (Nobody)
<x11@FreeBSD.org> for maintainer-feedback:
Bug 259753: xdm should depend on xsm for not returning to loging screen just
after login if no .xsession file
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259753



--- Description ---
I installed from:
https://download.freebsd.org/ftp/snapshots/amd64/amd64/ISO-IMAGES/14.0/FreeBSD-
14.0-CURRENT-amd64-20211104-7ac82c96fe7-250453-disc1.iso.xz

After that I installed xdm (following section 5.6 of the handbook.

After rebooting, when I was logging with the right password, it would return
immediately to the logging screen with no apparent errors.

I discovered that the file:
/usr/local/etc/X11/xdm/Xsession have inside it:

f [ -s "$startup" ]; then
	if [ -x "$startup" ]; then
		exec "$startup"
	else
		exec /bin/sh "$startup"
	fi
else
	if [ -r "$resources" ]; then
		/usr/local/bin/xrdb -load "$resources"
	fi
	exec /usr/local/bin/xsm
fi

And so I needed to install X11/xsm (X session manager) with "pkg install
X11/xsm".

After doing so, and rebooted, I was able to boot with xdm... although the
environment I was put it surprised me a bit, but from there it did not took
look for me to edit .xsession to log in with my wanted desktop environment.