From d3d4abdbb2bb9827550c63864aa3ea518cc763a0 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Thu, 4 Mar 2021 08:51:44 +0000
Subject: [PATCH] Deprecate HOMEBREW_NO_ENV_FILTERING

It's undocumented so we don't need to do the full deprecation dance here
but let's give people a bit of a head up.
---
 bin/brew | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bin/brew b/bin/brew
index d93497ef3e..a10662297c 100755
--- a/bin/brew
+++ b/bin/brew
@@ -108,6 +108,8 @@ then
 
   exec /usr/bin/env -i "${FILTERED_ENV[@]}" /bin/bash "$HOMEBREW_LIBRARY/Homebrew/brew.sh" "$@"
 else
+  echo "Warning: HOMEBREW_NO_ENV_FILTERING is undocumented, deprecated and will be removed in a future Homebrew release (because it breaks many things)!" >&2
+
   # Don't need shellcheck to follow this `source`.
   # shellcheck disable=SC1090
   source "$HOMEBREW_LIBRARY/Homebrew/brew.sh"