From ce7dcf847331c4bd2d2216f3168b9e1a5201bd24 Mon Sep 17 00:00:00 2001
From: Robert Gleeson <rob@flowof.info>
Date: Sun, 23 Mar 2014 09:57:59 +0100
Subject: [PATCH] support #to_h, #to_hash in Behavior#==

---
 lib/pry/config/behavior.rb | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/lib/pry/config/behavior.rb b/lib/pry/config/behavior.rb
index 2480e0be..9a8c0dd3 100644
--- a/lib/pry/config/behavior.rb
+++ b/lib/pry/config/behavior.rb
@@ -62,17 +62,18 @@ module Pry::Config::Behavior
   end
 
   def merge!(other)
-    other = if other.respond_to?(:to_h)
-              other.to_h
-            elsif other.respond_to?(:to_hash)
-              other.to_hash
-            end
+    other = try_convert_to_hash(other)
     raise TypeError, "unable to convert argument into a Hash" unless other
     other.each do |key, value|
       self[key] = value
     end
   end
 
+  def ==(other)
+    to_h == try_convert_to_hash(other)
+  end
+  alias_method :eql?, :==
+
   def respond_to?(key, include_private=false)
     key?(key) or @default.respond_to?(key) or super(key, include_private)
   end
@@ -100,12 +101,6 @@ module Pry::Config::Behavior
     end
   end
 
-  def ==(other)
-    return false unless other.respond_to?(:to_hash)
-    to_hash == other.to_hash
-  end
-  alias_method :eql?, :==
-
   def keys
     @lookup.keys
   end
@@ -123,4 +118,16 @@ private
       value.dup
     end
   end
+
+  def try_convert_to_hash(obj)
+    if Hash === obj
+      obj
+    elsif obj.respond_to?(:to_h)
+      obj.to_h
+    elsif obj.respond_to?(:to_hash)
+      obj.to_hash
+    else
+      nil
+    end
+  end
 end