misc/172965: pw useradd does not allow -g ""

[Jeff Lawson]

>Number:         172965
>Category:       misc
>Synopsis:       pw useradd does not allow -g ""
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Oct 22 21:00:00 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Jeff Lawson
>Release:        9.1-PRERELEASE
>Organization:
>Environment:
FreeBSD sushi.hou.flightaware.com 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #0: Fri Oct 19 02:12:36 UTC 2012     root at riata.hou.flightaware.com:/usr/obj/usr/src/sys/GENERIC-DTRACE  amd64

>Description:
Man page for "pw" indicates that -g "" is an acceptable option:

     -g group      Set the default group for new users.  If a blank group is
                   specified using -g "", then new users will be allocated
                   their own private primary group with the same name as their
                   login name.  If a group is supplied, either its name or uid
                   may be given as an argument.

However, attempting to do that produces an error:

# pw useradd moo -g ""
pw: group `' is not defined

>How-To-Repeat:
pw useradd moo -g ""

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: