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diff --git a/spec/ruby/core/range/include_spec.rb b/spec/ruby/core/range/include_spec.rb
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+++ b/spec/ruby/core/range/include_spec.rb
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+# encoding: binary
+require_relative '../../spec_helper'
+require_relative 'shared/cover_and_include'
+require_relative 'shared/include'
+require_relative 'shared/cover'
+
+describe "Range#include?" do
+ it_behaves_like :range_cover_and_include, :include?
+ it_behaves_like :range_include, :include?
+
+ it "does not include U+9995 in the range U+0999..U+9999" do
+ ("\u{999}".."\u{9999}").include?("\u{9995}").should be_false
+ end
+end