ContactCapabilities: signal when contacts' capabilities become unknown
Submitted by Mikhail Zabaluev
Assigned to Telepathy bugs list
Description
The case when contact capabilities are unknown is distinguished in getters and attributes of connection interface ContactCapabilities, but there is no way to signal when precise knowledge of contact's capabilities is lost, e.g. due to the contact going offline.
Simon's plan to implement such a signal, quoted from #telepathy:
<smcv> the backwards compat path would be to signal all possible caps for contacts whose real caps were unknown, then immediately signal ContactCapabilitiesUnknown to say "but actually that was just a guess"
Version: git master