https://git.ruby-lang.org/ruby.git/commit/?id=6767a9ef2b

From 6767a9ef2b0e4b19e58f7c148f6d176af73e55fc Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@g...>
Date: Tue, 18 Aug 2020 21:43:19 +0900
Subject: Lounch external process on Windows correctly


diff --git a/test/irb/test_history.rb b/test/irb/test_history.rb
index 61bd41c..430661c 100644
--- a/test/irb/test_history.rb
+++ b/test/irb/test_history.rb
@@ -117,10 +117,9 @@ module TestIRB https://github.com/ruby/ruby/blob/trunk/test/irb/test_history.rb#L117
 
         with_temp_stdio do |stdin, stdout|
           replace_stdio(stdin.path, stdout.path) do
-            cmds = %W[ruby -Ilib:test -W0 -rirb -e 'IRB.start(__FILE__)']
             yield(stdin, stdout)
             stdin.close
-            system(cmds.join(' '))
+            system('ruby', '-Ilib', '-Itest', '-W0', '-rirb', '-e', 'IRB.start(__FILE__)')
             stdout.flush
             result = stdout.read
             stdout.close
-- 
cgit v0.10.2


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