From 4d650bc25737a4d2c0dcc9d4c845688cb5dc85ce Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sat, 22 Jun 2019 09:29:33 +0900
Subject: Fix over-expansion

* test/lib/minitest/unit.rb (MiniTest::Assertions#mu_pp_for_diff):
  do not expand escaped backslash followed by 'n'.
---
 test/lib/minitest/unit.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'test/lib/minitest')

diff --git a/test/lib/minitest/unit.rb b/test/lib/minitest/unit.rb
index 25fd15d093..6ba1c707e6 100644
--- a/test/lib/minitest/unit.rb
+++ b/test/lib/minitest/unit.rb
@@ -179,7 +179,7 @@ module MiniTest
     # uses mu_pp to do the first pass and then cleans it up.
 
     def mu_pp_for_diff obj
-      mu_pp(obj).gsub(/\\n/, "\n").gsub(/:0x[a-fA-F0-9]{4,}/m, ':0xXXXXXX')
+      mu_pp(obj).gsub(/(?<!\\)(?:\\\\)*\K\\n/, "\n").gsub(/:0x[a-fA-F0-9]{4,}/m, ':0xXXXXXX')
     end
 
     def _assertions= n # :nodoc:
-- 
cgit v1.2.3