3 files changed, 27 insertions, 1 deletions
diff --git a/spec/ruby/core/kernel/eval_spec.rb b/spec/ruby/core/kernel/eval_spec.rb
index fbae8ff3c7..46158628a3 100644
--- a/spec/ruby/core/kernel/eval_spec.rb
+++ b/spec/ruby/core/kernel/eval_spec.rb
@@ -214,6 +214,7 @@ describe "Kernel#eval" do
     ruby_exe(code).chomp.should == "a,b,c,e,LocalJumpError,f"
   end
 
+  # See language/magic_comment_spec.rb for more magic comments specs
   describe "with a magic encoding comment" do
     it "uses the magic comment encoding for the encoding of literal strings" do
       code = "# encoding: UTF-8\n'é'.encoding".b
diff --git a/spec/ruby/core/kernel/fixtures/singleton_methods.rb b/spec/ruby/core/kernel/fixtures/singleton_methods.rb
new file mode 100644
index 0000000000..32ea0adf89
--- /dev/null
+++ b/spec/ruby/core/kernel/fixtures/singleton_methods.rb
@@ -0,0 +1,13 @@
+module SingletonMethodsSpecs
+  module Prepended
+    def mspec_test_kernel_singleton_methods
+    end
+    public :mspec_test_kernel_singleton_methods
+  end
+
+  ::Module.prepend Prepended
+
+  module SelfExtending
+    extend self
+  end
+end
diff --git a/spec/ruby/core/kernel/singleton_methods_spec.rb b/spec/ruby/core/kernel/singleton_methods_spec.rb
index 74fd4a9608..eb4cede110 100644
--- a/spec/ruby/core/kernel/singleton_methods_spec.rb
+++ b/spec/ruby/core/kernel/singleton_methods_spec.rb
@@ -36,6 +36,19 @@ describe :kernel_singleton_methods_modules, shared: true do
   it "does not return any included methods for a class including a module" do
     ReflectSpecs::D.singleton_methods(*@object).should include(:ds_pro, :ds_pub)
   end
+
+  it "for a module does not return methods in a module prepended to Module itself" do
+    require_relative 'fixtures/singleton_methods'
+    mod = SingletonMethodsSpecs::SelfExtending
+    mod.method(:mspec_test_kernel_singleton_methods).owner.should == SingletonMethodsSpecs::Prepended
+
+    ancestors = mod.singleton_class.ancestors
+    ancestors[0...2].should == [ mod.singleton_class, mod ]
+    ancestors.should include(SingletonMethodsSpecs::Prepended)
+
+    # Do not search prepended modules of `Module`, as that's a non-singleton class
+    mod.singleton_methods.should == []
+  end
 end
 
 describe :kernel_singleton_methods_supers, shared: true do
@@ -145,7 +158,6 @@ describe "Kernel#singleton_methods" do
     it_behaves_like :kernel_singleton_methods_supers, nil, true
     it_behaves_like :kernel_singleton_methods_modules, nil, true
     it_behaves_like :kernel_singleton_methods_private_supers, nil, true
-
   end
 
   describe "when passed false" do