From 453cb7f3674c102724538c3c7ff17d1fdd1cf67c Mon Sep 17 00:00:00 2001
From: eli <pcelphome>
Date: Sat, 24 Apr 2021 17:59:13 +0100
Subject: [PATCH] Fix issue with tmux.kak setting empty TMPDIR variable

---
 rc/windowing/tmux.kak | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/rc/windowing/tmux.kak b/rc/windowing/tmux.kak
index 420e6381..a57bc7c2 100644
--- a/rc/windowing/tmux.kak
+++ b/rc/windowing/tmux.kak
@@ -22,7 +22,11 @@ define-command -hidden -params 2.. tmux-terminal-impl %{
         shift
         # ideally we should escape single ';' to stop tmux from interpreting it as a new command
         # but that's probably too rare to care
-        TMUX=$tmux tmux $tmux_args env TMPDIR="$TMPDIR" "$@" < /dev/null > /dev/null 2>&1 &
+        if [ -n "$TMPDIR" ]; then
+            TMUX=$tmux tmux $tmux_args env TMPDIR="$TMPDIR" "$@" < /dev/null > /dev/null 2>&1 &
+        else
+            TMUX=$tmux tmux $tmux_args "$@" < /dev/null > /dev/null 2>&1 &
+        fi
     }
 }