xP: handle M-a and M-! bindings from xC

xP/public/xP.js

@@ -614,3 +614,26 @@ let Main = {
 }
 
 window.addEventListener('load', () => m.mount(document.body, Main))
+
+document.addEventListener('keydown', event => {
+	if (rpc.ws == undefined || event.ctrlKey || event.metaKey)
+		return
+
+	if (event.altKey && event.key == 'a') {
+		for (const [name, b] of buffers)
+			if (name !== bufferCurrent && b.newMessages) {
+				rpc.send({command: 'BufferActivate', bufferName: name})
+				break
+			}
+		return event.preventDefault()
+	}
+
+	if (event.altKey && event.key == '!') {
+		for (const [name, b] of buffers)
+			if (name !== bufferCurrent && b.highlighted) {
+				rpc.send({command: 'BufferActivate', bufferName: name})
+				break
+			}
+		return event.preventDefault()
+	}
+})