https://git.ruby-lang.org/ruby.git/commit/?id=f9696ca6cb

From f9696ca6cbfe827b7ce7199e511fa7431f9333b1 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 21 May 2019 10:30:13 +0900
Subject: Simplified the guard against old versions


diff --git a/test/ruby/test_pattern_matching.rb b/test/ruby/test_pattern_matching.rb
index 335a519..bba83f6 100644
--- a/test/ruby/test_pattern_matching.rb
+++ b/test/ruby/test_pattern_matching.rb
@@ -2,9 +2,7 @@ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_pattern_matching.rb#L2
 require 'test/unit'
 
 verbose, $VERBOSE = $VERBOSE, nil # suppress "warning: Pattern matching is experimental, and the behavior may change in future versions of Ruby!"
-eval "#{<<~"begin;"}\n#{<<~'end;'}".gsub(/^.*# fix indent\n/, ''), binding, __FILE__, __LINE__+2
-begin;
-end # fix indent
+eval "\n#{<<~'END_of_GUARD'}", binding, __FILE__, __LINE__
 class TestPatternMatching < Test::Unit::TestCase
   class C
     class << self
@@ -1145,6 +1143,5 @@ END https://github.com/ruby/ruby/blob/trunk/test/ruby/test_pattern_matching.rb#L1143
     end
   end
 end
-begin # fix indent
-end;
+END_of_GUARD
 $VERBOSE = verbose
-- 
cgit v0.10.2


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