Those messages appear in various context and do not provide any useful feedback to the user, diverging from UNIX philosophy of staying quiet when there's nothing of importance to say.
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/1738
Approved-by: John Johansen <john@jjmx.net>
Merged-by: John Johansen <john@jjmx.net>
Known Bugs:
Will allow multiple letters in the () due to translation/unicode issues with regexing the key.
User input will probably bug out in a different locale.