xC/xP: implement M-H in the web frontend

xC-proto

@@ -9,24 +9,28 @@ struct CommandMessage {
 	union CommandData switch (enum Command {
 		HELLO,
 		ACTIVE,
-		BUFFER_INPUT,
 		BUFFER_ACTIVATE,
+		BUFFER_INPUT,
+		BUFFER_TOGGLE_UNIMPORTANT,
 		PING_RESPONSE,
 		PING,
 		BUFFER_COMPLETE,
 		BUFFER_LOG,
 	} command) {
+	// If the version check succeeds, the client will receive
+	// an initial stream of SERVER_UPDATE, BUFFER_UPDATE, BUFFER_STATS,
+	// BUFFER_LINE, and finally a BUFFER_ACTIVATE message.
 	case HELLO:
 		u32 version;
-		// If the version check succeeds, the client will receive
-		// an initial stream of SERVER_UPDATE, BUFFER_UPDATE, BUFFER_STATS,
-		// BUFFER_LINE, and finally a BUFFER_ACTIVATE message.
 	case ACTIVE:
 		void;
+	case BUFFER_ACTIVATE:
+		string buffer_name;
 	case BUFFER_INPUT:
 		string buffer_name;
 		string text;
-	case BUFFER_ACTIVATE:
+	// XXX: Perhaps this should rather be handled through a /buffer command.
+	case BUFFER_TOGGLE_UNIMPORTANT:
 		string buffer_name;
 	case PING_RESPONSE:
 		u32 event_seq;