From bba4ce2286c58329f34ebafb9bb3c1a39c8865b9 Mon Sep 17 00:00:00 2001
From: Matthias Urlichs <matthias@urlichs.de>
Date: Sat, 13 Sep 2025 11:51:51 +0200
Subject: [PATCH] Don't complain about unset 'sourced'

If the user's bash profile contains 'set -u' (to protect against typos
in variable names; think "rm -Rf $TMp/*"), starting a new kitty terminal
resulted in a spurious `bash: sourced: unbound variable` message.
---
 shell-integration/bash/kitty.bash | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shell-integration/bash/kitty.bash b/shell-integration/bash/kitty.bash
index e6936c36e..6b0374a6a 100644
--- a/shell-integration/bash/kitty.bash
+++ b/shell-integration/bash/kitty.bash
@@ -318,7 +318,7 @@ _ksi_main() {
         builtin local venv="${VIRTUAL_ENV}/bin/activate"
         builtin local sourced=""
         _ksi_s_is_ok() {
-            [[ -z "$sourced" && "$KITTY_CLONE_SOURCE_STRATEGIES" == *",$1,"* ]] && builtin return 0
+            [[ -z "${sourced:-}" && "$KITTY_CLONE_SOURCE_STRATEGIES" == *",$1,"* ]] && builtin return 0
             builtin return 1
         }