From 909671f5082c466586fee9a7fb33ee529d2e8d1a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 22 Jun 2025 09:26:54 +0530
Subject: [PATCH] Nicer error message when user tries to run kitten with
 allow_remote_control from command line

---
 kittens/tui/handler.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kittens/tui/handler.py b/kittens/tui/handler.py
index c7a629fba..9f271a636 100644
--- a/kittens/tui/handler.py
+++ b/kittens/tui/handler.py
@@ -70,6 +70,8 @@ class KittenUI:
             return
         if self.allow_remote_control:
             self.to = os.environ.get('KITTY_LISTEN_ON', '')
+            if not self.to:
+                raise ValueError('Remote control not enabled, this kitten should be run via a map in kitty.conf, not from the command line')
             self.rc_fd = int(self.to.partition(':')[-1])
             os.set_inheritable(self.rc_fd, False)
         if (self.remote_control_password or self.remote_control_password == '') and not self.password: