Folks, It looks like purge_offline's behaviour in XEP-0060 is entirely undefined. The pertinent bits seem to be:
1) That purge_offline means: "Whether to purge all items when the relevant publisher goes offline" 2) That, when talking about a normal purge "a purge request MUST NOT result in sending the same notifications as are sent when deleting items (since purging a node with many persisted items could result in a large number of notifications); instead, the node MUST send a single notification to each subscriber, containing an empty <purge/> child element." and that's it. So the closest thing I can see to prescribed behaviour is that when doing a purge_offline because a publisher went offline their items are silently removed and that if the node is now completely empty a <purge.../> notification is sent. This still doesn't seem entirely satisfying, but the only other option seems to be sending retract notifications for all of the items removed, which (2) says a purge explicitly MUST NOT do. Thoughts? /K
