nobu	2017-12-01 12:54:49 +0900 (Fri, 01 Dec 2017)

  New Revision: 60952

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60952

  Log:
    prelude.rb: suppress redefinition warnings

  Modified files:
    trunk/lib/irb.rb
    trunk/prelude.rb
Index: lib/irb.rb
===================================================================
--- lib/irb.rb	(revision 60951)
+++ lib/irb.rb	(revision 60952)
@@ -703,7 +703,6 @@ end https://github.com/ruby/ruby/blob/trunk/lib/irb.rb#L703
 
 class Binding
   # :nodoc:
-  undef irb if method_defined?(:irb)
   def irb
     IRB.setup(eval("__FILE__"))
     workspace = IRB::WorkSpace.new(self)
Index: prelude.rb
===================================================================
--- prelude.rb	(revision 60951)
+++ prelude.rb	(revision 60952)
@@ -140,6 +140,9 @@ class Binding https://github.com/ruby/ruby/blob/trunk/prelude.rb#L140
     require 'irb'
     irb
   end
+
+  # suppress redefinition warning
+  alias irb irb # :nodoc:
 end
 
 module Kernel
@@ -150,4 +153,7 @@ module Kernel https://github.com/ruby/ruby/blob/trunk/prelude.rb#L153
     require 'pp'
     pp(*objs)
   end
+
+  # suppress redefinition warning
+  alias pp pp # :nodoc:
 end

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