From 2d19b87208b8bf23e8b9e70907665761c633e880 Mon Sep 17 00:00:00 2001
From: Luflosi <luflosi@luflosi.de>
Date: Thu, 24 Oct 2019 14:43:23 +0200
Subject: [PATCH] Fix potential error when $PATH is not defined

When `PATH` is not in `os.environ`, kitty could potentially throw a `KeyError`.
---
 kitty/constants.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kitty/constants.py b/kitty/constants.py
index 60cde3731..f2acb3542 100644
--- a/kitty/constants.py
+++ b/kitty/constants.py
@@ -25,7 +25,7 @@ def kitty_exe():
     if ans is None:
         rpath = sys._xoptions.get('bundle_exe_dir')
         if not rpath:
-            items = os.environ['PATH'].split(os.pathsep)
+            items = filter(None, os.environ.get('PATH', '').split(os.pathsep))
             seen = set()
             for candidate in items:
                 if candidate not in seen: