From 0314604384529fb535825bf1d93c6fdb3c5ccbbe Mon Sep 17 00:00:00 2001
From: Paul Scott <paul.scotto@gmail.com>
Date: Thu, 25 Nov 2021 22:55:21 +0000
Subject: [PATCH] fix(lib): don't error if `INSIDE_EMACS` is not defined
 (#10443)

---
 lib/termsupport.zsh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/termsupport.zsh b/lib/termsupport.zsh
index 49f64400b..4035d10a1 100644
--- a/lib/termsupport.zsh
+++ b/lib/termsupport.zsh
@@ -10,7 +10,7 @@ function title {
   setopt localoptions nopromptsubst
 
   # Don't set the title if inside emacs, unless using vterm
-  [[ -n "$INSIDE_EMACS" && "$INSIDE_EMACS" != vterm ]] && return
+  [[ -n "${INSIDE_EMACS:-}" && "$INSIDE_EMACS" != vterm ]] && return
 
   # if $2 is unset use $1 as default
   # if it is set and empty, leave it as is