Add another network broadcast mode.

src/network/network_server.cpp

@@ -1363,15 +1363,17 @@ void NetworkServerSendChat(NetworkAction action, DestType desttype, int dest, co
 			DEBUG(net, 0, "[server] received unknown chat destination type %d. Doing broadcast instead", desttype);
 			/* FALL THROUGH */
 		case DESTTYPE_BROADCAST:
+		case DESTTYPE_BROADCAST_SS:
 			FOR_ALL_CLIENT_SOCKETS(cs) {
-				cs->SendChat(action, from_id, false, msg, data);
+				cs->SendChat(action, from_id, (desttype == DESTTYPE_BROADCAST_SS && from_id == cs->client_id), msg, data);
 			}
 
 			NetworkAdminChat(action, desttype, from_id, msg, data, from_admin);
 
 			ci = NetworkClientInfo::GetByClientID(from_id);
 			if (ci != NULL) {
-				NetworkTextMessage(action, GetDrawStringCompanyColour(ci->client_playas), false, ci->client_name, msg, data);
+				NetworkTextMessage(action, GetDrawStringCompanyColour(ci->client_playas),
+						(desttype == DESTTYPE_BROADCAST_SS && from_id == CLIENT_ID_SERVER), ci->client_name, msg, data);
 			}
 			break;
 	}

src/network/network_type.h

@@ -81,6 +81,7 @@ enum NetworkPasswordType {
 /** Destination of our chat messages. */
 enum DestType {
 	DESTTYPE_BROADCAST, ///< Send message/notice to all clients (All)
+	DESTTYPE_BROADCAST_SS, ///< Send message/notice to all clients (All), but tag the broadcast to self as a self-send
 	DESTTYPE_TEAM,      ///< Send message/notice to everyone playing the same company (Team)
 	DESTTYPE_CLIENT,    ///< Send message/notice to only a certain client (Private)
 };