From 11f322b61c28f9fd521e9d990a21f82cde661b62 Mon Sep 17 00:00:00 2001
From: David Griffith <dave@661.org>
Date: Mon, 21 Oct 2019 19:01:54 -0700
Subject: [PATCH] Trying this to please brew test-bot.

---
 Library/Homebrew/extend/string.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/extend/string.rb b/Library/Homebrew/extend/string.rb
index 94b4144353..304c6cc807 100644
--- a/Library/Homebrew/extend/string.rb
+++ b/Library/Homebrew/extend/string.rb
@@ -50,7 +50,7 @@ module StringInreplaceExtension
   def remove_make_var!(flags)
     Array(flags).each do |flag|
       # Also remove trailing \n, if present.
-      if !gsub(/^#{Regexp.escape(flag)}[ \t]*[\\?\+\:\!]?=.*$\n?/, "")
+      if !gsub!(/^#{Regexp.escape(flag)}[ \t]*[\\?\+\:\!]?=.*$\n?/, "", false)
         errors << "expected to remove #{flag.inspect}"
       end
     end