ansible-examples/custom-outcome.yml

---
- name: configure a task with custom outcome recognition
  hosts: localhost
  gather_facts: no
  tasks:
    - name: execute the bomb
      command: ./change-something-or-not.sh
      register: outcome
      failed_when: outcome.stderr != ""
      changed_when: "'we fixed' in outcome.stdout"

    - debug:
        var: outcome
...