--- ctl/checkgroups.orig	Thu Dec 31 15:55:39 1998
+++ ctl/checkgroups	Fri Jan 15 07:46:04 1999
@@ -79,7 +79,7 @@
 # "Invalidations" (e.g. !mod) are recognised but not acted upon.
 # There is no provision for "encoded words" (see son-of-1036).
 
-ngletgit='a-z0-9'
+ngletgit='a-z_0-9'
 ngalpha='-_+a-z0-9'
 if test `awk	"
 	BEGIN {state = 1}