xA/xT/xW: handle server rename events better

xA/xA.go

@@ -1054,6 +1054,11 @@ func relayProcessMessage(m *RelayEventMessage) {
 	case *RelayEventDataServerRename:
 		servers[data.New] = servers[data.ServerName]
 		delete(servers, data.ServerName)
+		for i := range buffers {
+			if buffers[i].serverName == data.ServerName {
+				buffers[i].serverName = data.New
+			}
+		}
 	case *RelayEventDataServerRemove:
 		delete(servers, data.ServerName)
 	}

xT/xT.cpp

@@ -1120,9 +1120,12 @@ relay_process_message(const Relay::EventMessage &m)
 	{
 		auto &data = dynamic_cast<Relay::EventData_ServerRename &>(*m.data);
 		auto original = QString::fromStdWString(data.server_name);
-		g.servers.insert_or_assign(
-			QString::fromStdWString(data.new_), g.servers.at(original));
+		auto new_ = QString::fromStdWString(data.new_);
+		g.servers.insert_or_assign(new_, g.servers.at(original));
 		g.servers.erase(original);
+		for (auto &b : g.buffers)
+			if (b.server_name == original)
+				b.server_name = new_;
 		break;
 	}
 	case Relay::Event::SERVER_REMOVE:

xW/xW.cpp

@@ -1057,6 +1057,9 @@ relay_process_message(const Relay::EventMessage &m)
 		auto &data = dynamic_cast<Relay::EventData_ServerRename &>(*m.data);
 		g.servers.insert_or_assign(data.new_, g.servers.at(data.server_name));
 		g.servers.erase(data.server_name);
+		for (auto &b : g.buffers)
+			if (b.server_name == data.server_name)
+				b.server_name = data.new_;
 		break;
 	}
 	case Relay::Event::SERVER_REMOVE: