[gdm-list] welcome message variables besides %n not working

[Michael Pardee <gdm-list groovix com>]

We have used %d in the past to put the display number in the welcome
message, and some gdm.conf documentation talks about other variables
that can be used, such as %s and %r and %m.
With the latest version of Ubuntu, gdm is displaying %d as 30 or
whatever you have the login timeout set to, even if you are not using
automatic login!
Trying all %X variables showed only %c for the static time and %n for
the hostname do anything.  Where is the official up to date gdm.conf
documentation, and is this a bug or was the functionality removed? 
gdm version is 2.8.0.5-0ubuntu1
Thanks,
Mike
--
Michael Pardee
Open Sense Solutions LLC
http://opensensesolutions.com