From 1ef94259aced56733788f4920a4487ad958988e4 Mon Sep 17 00:00:00 2001
From: Darren Burns <darrenburns@users.noreply.github.com>
Date: Thu, 26 Dec 2024 09:22:48 +0000
Subject: [PATCH] fix(terminal): mode 2026 feature detection response (#3884)

The response to the 2026 mode query was missing a `?` character.

The response should be of the format `CSI ? 2026 ; N $ y` where N can
be any value in the range 0-4 inclusive.

References:

https://gist.github.com/christianparpart/d8a62cc1ab659194337d73e399004036
https://vt100.net/docs/vt510-rm/DECRPM.html
---
 zellij-server/src/panes/grid.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zellij-server/src/panes/grid.rs b/zellij-server/src/panes/grid.rs
index 0cc7ba2c..459ca2a9 100644
--- a/zellij-server/src/panes/grid.rs
+++ b/zellij-server/src/panes/grid.rs
@@ -2745,7 +2745,7 @@ impl Perform for Grid {
                 for param in params_iter.map(|param| param[0]) {
                     match param {
                         2026 => {
-                            let response = "\u{1b}[2026;2$y";
+                            let response = "\u{1b}[?2026;2$y";
                             self.pending_messages_to_pty
                                 .push(response.as_bytes().to_vec());
                         },