id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
17239	create username with dots	lbf1	ryan	"at 'Users > Add New' its not possible to create users with '.' in the name, but in Network Admin > Users > Add New its possible...

'''(normal) wp-includes/ms-functions.php
'''
{{{
function wpmu_validate_user_signup($user_name, $user_email) {
...
	preg_match( '/[a-z0-9]+/', $user_name, $maybe );
...
}
Only lowercase letters (a-z) and numbers are allowed.
}}}

'''(network) wp-admin/network/user-new.php'''
dont have any regexp..."	defect (bug)	closed	normal	3.2	Users	3.1	trivial	fixed	has-patch