Fix for ansible_managed comment

tasks/file_present.yml

@@ -75,7 +75,7 @@
             - name: Ansible managed comment present at the top of the file
               ansible.builtin.lineinfile:
                 path: "{{ systemd_file.path }}"
-                line: "{{ ansible_managed | ansible.builtin.comment }}"
+                line: "# {{ systemd_ansible_managed }}"
                 state: present
                 insertbefore: BOF
 
@@ -121,8 +121,7 @@
 
       when: >-
         ( not systemd_file_state.stat.exists | bool ) or
-        ( systemd_file.state is not defined ) or
-        ( systemd_file.state == "templated" )
+        ( systemd_file.state is defined and systemd_file.state == "templated" )
 
     - name: Include flush handlers task
       ansible.builtin.include_tasks: flush_handlers.yml

templates/ansible_managed.j2

+{{- ansible_managed -}}

templates/unit.j2

-{{ ansible_managed | ansible.builtin.comment }}
+# {{ systemd_ansible_managed }}
 
 {% if systemd_file.comment is defined %}
 # BEGIN ANSIBLE MANAGED BLOCK

vars/main.yml

 ---
+# https://jpmens.net/2020/09/29/using-ansible-managed/
+# https://github.com/ansible/ansible/issues/53627#issuecomment-471562410
+systemd_ansible_managed: "{{ lookup('ansible.builtin.template', './templates/ansible_managed.j2') | trim }}"
 systemd_file_backup: "{{ systemd_file.path | ansible.builtin.dirname }}/.{{ systemd_file.path | ansible.builtin.basename }}.{{ ansible_date_time.iso8601_basic_short }}.bak }}"
 systemd_unit_files_enabled_query: "[?state == 'enabled'].unit_file"
 systemd_unit_names: "{{ systemd_units | community.general.json_query('[*].name') }}"