k0kubun	2017-05-26 23:17:55 +0900 (Fri, 26 May 2017)

  New Revision: 58908

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58908

  Log:
    erb.rb: Tiny improvement of compiling cost
    
    by reducing string allocation.
    
    * Before
    
    app_erb 0.687
    
    * After
    
    app_erb 0.679

  Modified files:
    trunk/lib/erb.rb
Index: lib/erb.rb
===================================================================
--- lib/erb.rb	(revision 58907)
+++ lib/erb.rb	(revision 58908)
@@ -582,7 +582,7 @@ class ERB https://github.com/ruby/ruby/blob/trunk/lib/erb.rb#L582
     def content_dump(s) # :nodoc:
       n = s.count("\n")
       if n > 0
-        s.dump + "\n" * n
+        s.dump << "\n" * n
       else
         s.dump
       end

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