From cbbed40295d8ed7cbf51f0e5bd0b7747a9b2c295 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Thu, 5 Jun 2014 13:20:17 +0900
Subject: add nil#to_h; ref #2348

---
 mrbgems/mruby-enum-ext/mrblib/enum.rb | 4 ++++
 mrbgems/mruby-enum-ext/test/enum.rb   | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/mrbgems/mruby-enum-ext/mrblib/enum.rb b/mrbgems/mruby-enum-ext/mrblib/enum.rb
index 5856fb363..b13d00a84 100644
--- a/mrbgems/mruby-enum-ext/mrblib/enum.rb
+++ b/mrbgems/mruby-enum-ext/mrblib/enum.rb
@@ -691,4 +691,8 @@ module Enumerable
     end
     h
   end
+
+  def nil.to_h
+    {}
+  end
 end
diff --git a/mrbgems/mruby-enum-ext/test/enum.rb b/mrbgems/mruby-enum-ext/test/enum.rb
index 6b2624a45..08b553fe5 100644
--- a/mrbgems/mruby-enum-ext/test/enum.rb
+++ b/mrbgems/mruby-enum-ext/test/enum.rb
@@ -157,4 +157,6 @@ assert("Enumerable#to_h") do
   h = c.new.to_h
   assert_equal Hash, h.class
   assert_equal h0, h
+  # mruby-enum-ext also provides nil.to_h
+  assert_equal Hash.new, nil.to_h
 end
-- 
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