Open Stack

Hi, 

Does anyone know why TripleO uses "regionOne" as default region name? A comment in the code says it's the default keystone uses. 
But I cannot find any "regionOne" in keystone code. Devstack uses "RegionOne" by default and I do see lots of "RegionOne" in keystone code.

stack at u140401:~/openstack/tripleo-incubator$ grep -rn regionOne *
scripts/register-endpoint:26:REGION="regionOne" # NB: This is the default keystone uses.
scripts/register-endpoint:45:    echo "    -r, --region      -- Override the default region 'regionOne'."
scripts/setup-endpoints:33:    echo "    -r, --region            -- Override the default region 'regionOne'."
scripts/setup-endpoints:68:REGION="regionOne" #NB: This is the keystone default.
stack at u140401:~/openstack/tripleo-incubator$ grep -rn regionOne ../tripleo-heat-templates/
stack at u140401:~/openstack/tripleo-incubator$  grep -rn regionOne ../tripleo-image-elements/
../tripleo-image-elements/elements/tempest/os-apply-config/opt/stack/tempest/etc/tempest.conf:10:region = regionOne
../tripleo-image-elements/elements/neutron/os-apply-config/etc/neutron/metadata_agent.ini:3:auth_region = regionOne
stack at u140401:~/openstack/keystone$ grep -rn RegionOne * | wc -l
130
stack at u140401:~/openstack/keystone$ grep -rn regionOne * | wc -l
0

Another question is that TripleO doesn't export OS_REGION_NAME in stackrc.  So when someone source devstack rc file 
to do something and then source TripleO rc file again, the OS_REGION_NAME will be the one set by devstack rc file. 
I know this may be strange but isn't it better to use the same default value?

Thanks a lot.

BR
Zhou Zhenzan