kazu	2017-02-10 09:58:47 +0900 (Fri, 10 Feb 2017)

  New Revision: 57588

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57588

  Log:
    Use `unpack1` instead of `unpack` and `first`

  Modified files:
    trunk/lib/base64.rb
Index: lib/base64.rb
===================================================================
--- lib/base64.rb	(revision 57587)
+++ lib/base64.rb	(revision 57588)
@@ -56,7 +56,7 @@ module Base64 https://github.com/ruby/ruby/blob/trunk/lib/base64.rb#L56
   #    This is line three
   #    And so on...
   def decode64(str)
-    str.unpack("m").first
+    str.unpack1("m")
   end
 
   # Returns the Base64-encoded version of +bin+.
@@ -71,7 +71,7 @@ module Base64 https://github.com/ruby/ruby/blob/trunk/lib/base64.rb#L71
   # ArgumentError is raised if +str+ is incorrectly padded or contains
   # non-alphabet characters.  Note that CR or LF are also rejected.
   def strict_decode64(str)
-    str.unpack("m0").first
+    str.unpack1("m0")
   end
 
   # Returns the Base64-encoded version of +bin+.

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