[MM3-users] Handling of (un)subscribe mails for already (un)subscribed users

Hi,

I noticed that a mail to -subscribe for an already subscribed user doesn't get any response (about line 225 in mailman/src/mailman/app/subscriptions.py). Same but different for unsubscribe for users not on the list.

I'd need these kind of mails however in hope that users complain less.

Would that be generally interessting, and if so, any special requirements for submitting patches, or should I just do that locally?

Regards, Andi