https://git.ruby-lang.org/ruby.git/commit/?id=9218655660

From 92186556602c10ce38197757402b2e06a8fc1f06 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@r...>
Date: Sun, 11 Aug 2019 12:35:54 +0900
Subject: Removed needless alias for capture_io.


diff --git a/test/rdoc/helper.rb b/test/rdoc/helper.rb
index f22e416..743c6d8 100644
--- a/test/rdoc/helper.rb
+++ b/test/rdoc/helper.rb
@@ -203,6 +203,5 @@ class RDoc::TestCase < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/rdoc/helper.rb#L203
     end
   end
 
-  alias capture_io capture_output
   alias skip omit
 end
-- 
cgit v0.10.2


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