From 5db5c6e99a4b00688f9fc772ed56d5aa603f41a4 Mon Sep 17 00:00:00 2001
From: Kai Hoewelmeyer <kai@hoewelmeyer.eu>
Date: Sat, 26 Nov 2022 17:41:36 +0100
Subject: [PATCH] fix: allow running bin/brew with SHELLOPTS=nounset

A similar fix is already present on line 6.
---
 bin/brew | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/brew b/bin/brew
index 4725cb6d3d..5aa7de0ce7 100755
--- a/bin/brew
+++ b/bin/brew
@@ -21,7 +21,7 @@ fi
 # Fail fast with concise message when requesting unfiltered environment.
 # This is basically odisabled so can be removed at any major release afterwards
 # and definitely if this is still here in 2023.
-if [ -n "${HOMEBREW_NO_ENV_FILTERING}" ]
+if [ -n "${HOMEBREW_NO_ENV_FILTERING:-}" ]
 then
   echo "Error: HOMEBREW_NO_ENV_FILTERING was deprecated for over a year and has now been removed (because it breaks many things)!" >&2
   exit 1