nagios not expanding wildcards correctly

[Todd Taft]

I'm running nagios 3.2.3-3ubuntu1 on 64 bit Ubuntu 12.04.

I've turned on regular expression matching in /etc/nagios3/nagios.cfg with the line:
use_regexp_matching=1

If I have some hosts defined like this in a file in /etc/nagios3/conf.d:
define host{
 use generic-host ; Name of host template to use
 host_name array001
 address 10.1.1.1
 }
define host{
 use generic-host ; Name of host template to use
 host_name array002a
 address 10.1.2.1
}
define host{
 use generic-host ; Name of host template to use
 host_name array002b
 address 10.1.2.2
}

and a hostgroup defined like this in a file in /etc/nagios3/conf.d:
define hostgroup {
 hostgroup_name array2w
  alias Array 2 Wildcard
  members array002*
 }

then, nagios will include host array001 in the hostgroup array2w even though it shouldn't match.