verifymsg not called if user variable undefined

[Lemke, Michael IZ/HZA-IC1]

I didn't see this appear in the archives so I try again:


I am using cvs 1.11.5 with rsh.  If I have this verifymsg file

$ cat verifymsg
^test $CVSROOT/CVSROOT/verifymsg.sh ${=CvsUser}

the verifymsg.sh script is not called if CvsUser is undefined:

$ cvs ci -m 'verifymsg tests...'
cvs commit: Examining .
cvs commit: verifymsg:22: no such user variable ${=CvsUser}
Checking in ...

and the commit proceeds.  I want to reject the commit if the 
variable is undefined.  But I can't because my script isn't called.

Is there a way to have the variable expand to the empty string 
and have the script called anyway?  ${=var} seems to be the
only syntax available.

Thanks,
Michael