ini_file doesn't support multiline keys

.gitignore

*.array
*.inline

diff-ini.py

#!/usr/bin/env python
import sys
from ConfigParser import SafeConfigParser

orig_fn, other_fn = sys.argv[1:]

orig_c = SafeConfigParser()
orig_c.read(orig_fn)

other_c = SafeConfigParser()
other_c.read(other_fn)

if orig_c.get('foo', 'bar') == other_c.get('foo', 'bar'):
    sys.exit(0)
sys.exit(1)

example.yml

---
- name: Reset tests
  hosts: localhost
  become: false
  connection: local
  tasks:
    - name: Clean-up demo
      command: find . -depth 1 -name '*.ini.*' -delete

- name: DEMO 1; multiline inline fails
  hosts: localhost
  become: false
  connection: local
  tasks:
    - block:
        - command: cp -f working.ini multiline.ini.inline

        - name: Set multiline.ini.inline
          ini_file:
            dest: multiline.ini.inline
            section: foo
            option: bar
            value: |
                line 1
                line 2
                line 3

        - name: Test multiline.ini.inline works ok
          command: python diff-ini.py working.ini multiline.ini.inline
          changed_when: false
      rescue:
        # empty rescue block won't trigger the error catching, so lets create a dummy
        - debug: msg="Trying to set an inline multiline value failed"

- name: DEMO 2; it'd be cool if array serialization was supported
  hosts: localhost
  become: false
  connection: local
  tasks:
    - block:
        - command: cp -f working.ini multiline.ini.array

        - name: Try multiline.ini with an array
          ini_file:
            dest: multiline.ini.array
            section: foo
            option: bar
            value: ["line 1", "line 2", "line 3"]

        - name: Test multiline.ini.array works ok
          command: python diff-ini.py working.ini multiline.ini.array
          changed_when: false
      rescue:
        # empty rescue block won't trigger the error catching, so lets create a dummy
        - debug: msg="Trying to set an inline multiline array value failed"

working.ini

[foo]
baz = simple value
bar = line 1
      line 2
      line 3