Add OSC 777 support and clean up the notification title

Support OSC 777 ; notify ; title ; body (the rxvt/urxvt notification form) so a program can set an explicit title and body, with the semicolon-safe body rejoined via slice(2).join(";"). Clean the OSC 9 title: prefer a user-set custom tab name, and reduce filesystem-path titles to their last segment so shell tabs no longer show a long, truncated cwd.

1 files changed, 21 insertions, 5 deletions

diff --git a/src/osc-notify-middleware.ts b/src/osc-notify-middleware.ts
index ad2946c..dcfcc1a 100644
--- a/src/osc-notify-middleware.ts
+++ b/src/osc-notify-middleware.ts
@@ -4,6 +4,16 @@ import { Observable, Subject } from "rxjs";
 const oscPrefix = Buffer.from("\x1b]");
 const oscSuffix = Buffer.from("\x07");
 
+function cleanTitle(raw: string): string {
+	const t = (raw ?? "").trim();
+	if (!t) return "Terminal";
+	if (t.includes("/") || t.includes("\\")) {
+		const segs = t.split(/[/\\]/).filter(s => s.length > 0);
+		return segs.length ? segs[segs.length - 1] : t;
+	}
+	return t;
+}
+
 export default class OscNotifyMiddleware extends SessionMiddleware {
 	getTitle: () => string;
 	onClick: () => void;
@@ -39,11 +49,11 @@ export default class OscNotifyMiddleware extends SessionMiddleware {
 			const oscCode = parseInt(oscCodeString);
 
 			if (oscCode === 9) {
-				const notification = new Notification(this.getTitle() || "Terminal", {
-					body: oscParams[0]
-				});
-				notification.onclick = () => this.onClick();
-				this.notifications.push(notification);
+				this.showNotification(cleanTitle(this.getTitle()), oscParams[0] ?? "");
+			} else if (oscCode === 777 && oscParams[0] === "notify") {
+				const title = oscParams[1] || cleanTitle(this.getTitle());
+				const body = oscParams.slice(2).join(";");
+				this.showNotification(title, body);
 			} else {
 				continue;
 			}
@@ -52,6 +62,12 @@ export default class OscNotifyMiddleware extends SessionMiddleware {
 		super.feedFromSession(data);
 	}
 
+	private showNotification(title: string, body: string): void {
+		const notification = new Notification(title || "Terminal", { body });
+		notification.onclick = () => this.onClick();
+		this.notifications.push(notification);
+	}
+
 	close(): void {
 		this.notifications.forEach((notification) => notification.close());
 		this.notifications = [];