libpurple does not implement AIM groupchat exit

[Robert Lange]

The AIM protocol sends clients a contact list, which may include groups of which the user is a member. Once an AIM user enters a groupchat, the user must "leave" the groupchat before the groupchat will be permanently removed from the user's contact list. Leaving a groupchat is not implied by closing a groupchat window, deleting a groupchat from the contacts list, or signing out of the client.

I was able to "delete" a groupchat or "delete and block" a groupchat, and the groupchat disappeared from my contacts list. However, once I signed out and signed back in, the groupchat returned.

I was able to permanently expunge the groupchat only by signing into the AIM Express web client (http://www.aim.com/products/express/) and leaving the groupchat from that app.

My experience with this bug was using Empathy via telepathy-haze as the front-end, but the following appears to be the upstream bug report regarding the Pidgin front-end:

https://developer.pidgin.im/ticket/12734

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: libpurple0 1:2.10.6-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
Uname: Linux 3.5.0-21-generic x86_64
ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
Date: Mon Jan 7 11:45:21 2013
InstallationDate: Installed on 2011-08-29 (497 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MarkForUpload: True
SourcePackage: pidgin
UpgradeStatus: Upgraded to quantal on 2012-10-22 (76 days ago)