with_flattened expands strings as variables :(

output

ansible-playbook -i /tmp/inv test.yml

PLAY [localhost] **************************************************************

TASK: [with_items] ************************************************************
ok: [localhost] => (item=foo) => {
    "item": "foo",
    "msg": "foo"
}

TASK: [with_flattened] ********************************************************
ok: [localhost] => (item=bah) => {
    "item": "bah",
    "msg": "bah"
}

PLAY RECAP ********************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0

test.yml

---
- hosts: localhost
  gather_facts: False
  vars:
    foo: bah
    somethings:
      - "foo"
  tasks:
  - name: with_items
    debug:
        msg: "{{ item }}"
    with_items: somethings

  - name: with_flattened
    debug:
        msg: "{{ item }}"
    with_flattened:
      - somethings