From 71476313e0f94b7887bcb7aad3956c0d62505f4c Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Thu, 11 Jul 2019 17:39:19 +0200
Subject: Implement UnboundMethod#duplicable?

---
 .../lib/active_support/core_ext/object/duplicable.rb          | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'activesupport/lib')

diff --git a/activesupport/lib/active_support/core_ext/object/duplicable.rb b/activesupport/lib/active_support/core_ext/object/duplicable.rb
index 265bb7bf48..3ebcdca02b 100644
--- a/activesupport/lib/active_support/core_ext/object/duplicable.rb
+++ b/activesupport/lib/active_support/core_ext/object/duplicable.rb
@@ -1,4 +1,3 @@
-
 # frozen_string_literal: true
 
 #--
@@ -38,3 +37,13 @@ class Method
     false
   end
 end
+
+class UnboundMethod
+  # Unbound methods are not duplicable:
+  #
+  #  method(:puts).unbind.duplicable? # => false
+  #  method(:puts).unbind.dup         # => TypeError: allocator undefined for UnboundMethod
+  def duplicable?
+    false
+  end
+end
-- 
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