https://git.ruby-lang.org/ruby.git/commit/?id=db2047ebaf

From db2047ebaf4d506420432cf18ca978a1fc63a91f Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Sat, 25 Jul 2020 12:15:22 +0900
Subject: [rubygems/rubygems] Fix encoding mismatch errors on MinGW

GNU make in MSys is localized to use UTF-8 while Ruby's filesystem
encoding is set to OEM CodePage (e.g., CP932 in Japanese Edition),
the read output from the make has broken encoding and results in
"invalid byte sequence" errors.  As `DESTDIR` is set to a US-ASCII
7bit clean string, matching as binary encoding should have no
problems.

https://github.com/rubygems/rubygems/commit/96a5e7523b

diff --git a/test/rubygems/test_gem_ext_builder.rb b/test/rubygems/test_gem_ext_builder.rb
index f03b009..abd33d2 100644
--- a/test/rubygems/test_gem_ext_builder.rb
+++ b/test/rubygems/test_gem_ext_builder.rb
@@ -47,7 +47,7 @@ install: https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem_ext_builder.rb#L47
       Gem::Ext::Builder.make @dest_path, results
     end
 
-    results = results.join "\n"
+    results = results.join("\n").b
 
     assert_match %r{"DESTDIR=#{ENV['DESTDIR']}" clean$},   results
     assert_match %r{"DESTDIR=#{ENV['DESTDIR']}"$},         results
@@ -78,7 +78,7 @@ install: https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem_ext_builder.rb#L78
       Gem::Ext::Builder.make @dest_path, results
     end
 
-    results = results.join "\n"
+    results = results.join("\n").b
 
     assert_match %r{"DESTDIR=#{ENV['DESTDIR']}" clean$},   results
     assert_match %r{"DESTDIR=#{ENV['DESTDIR']}"$},         results
-- 
cgit v0.10.2


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