Ansible 1.9 bug explanation (fixed in >2.0)

localhost.ini

localhost ansible_connection=local

shell command

 ansible-playbook -i localhost.ini test.yml --extra-vars="AAA=BBB"
 
```
TASK: [debug msg="{{hostvars[inventory_hostname][item]}}"] ********************
ok: [localhost] => (item=AAA) => {
    "item": "AAA",
    "msg": "CCC"
}
```

test.yml

---
- name: Test playbook
  hosts: all
  vars:
    AAA: AAA
  tasks:
    # How to get here variable value from --extra-vars?
    - debug: msg="{{hostvars[inventory_hostname][item]}}"
      with_items: var_list
      when: hostvars[inventory_hostname][item] is defined

test.yml inside group_vars all

# group_vars/all/test.yml

AAA: CCC
var_list:
  - AAA

The problem fixed in Ansible 2