Description
Comtrya has gained a lot of nice features over the past few years, but it being a configuration management utility... well, eventually being able to modify actual configuration files, is pretty crucial.

Deleting lines from a (text) file might be a good first action. The examples here are meant to start a discussion on the topic.

Additional information
Here's three cases with examples below:

1. Removing all lines that are exact matches of 'sendmail_enable="NO"' in the /etc/rc.conf file.
2. Removing all lines that start with 'sendmail_enable', which would remove both the line of the previous example as well as 'sendmail_enable="YES"' (and a lot of other thinkable combinations, too, of course), effectively resetting a machine to the system default.
3. Removing all lines which contain 'sendmail', also getting rid of entries like 'sendmail_msp_queue_enable="YES" and the like.
4. (or 3b actually) Removing all the commented out lines in default configurations (those can be dozens to hundreds) is somewhat common task in system administration.

Manifest Example

actions:
  - action: lineinfile.delete
    target: /etc/rc.conf
    pattern: sendmail_enable="NO"
    mode: exact

- action: lineinfile.delete
    target: /etc/rc.conf
    pattern: sendmail_enable
    mode: startswith

  - action: lineinfile.delete
    target: /etc/rc.conf
    pattern: sendmail
    mode: contains

  - action: lineinfile:delete
    target: /usr/local/etc/nginx.conf
    pattern: #
    mode: contains