kazu	2017-09-29 20:00:00 +0900 (Fri, 29 Sep 2017)

  New Revision: 60061

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60061

  Log:
    Use unpack1 instead of unpack and `[0]`
    
    [Feature #13943][ruby-core:83027]

  Modified files:
    trunk/lib/erb.rb
Index: lib/erb.rb
===================================================================
--- lib/erb.rb	(revision 60060)
+++ lib/erb.rb	(revision 60061)
@@ -994,7 +994,7 @@ class ERB https://github.com/ruby/ruby/blob/trunk/lib/erb.rb#L994
     #
     def url_encode(s)
       s.to_s.b.gsub(/[^a-zA-Z0-9_\-.~]/n) { |m|
-        sprintf("%%%02X", m.unpack("C")[0])
+        sprintf("%%%02X", m.unpack1("C"))
       }
     end
     alias u url_encode

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