From c0dd290d4f6a478d8e3c8640aab8d9137c99cbcd Mon Sep 17 00:00:00 2001
From: Robert Gleeson <rob@flowof.info>
Date: Mon, 20 Jan 2014 22:44:05 +0100
Subject: [PATCH] avoid set of too many instance variables via Proc/local.

---
 lib/pry/config/default.rb | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/lib/pry/config/default.rb b/lib/pry/config/default.rb
index e1b7dddd..f3aa3f37 100644
--- a/lib/pry/config/default.rb
+++ b/lib/pry/config/default.rb
@@ -51,12 +51,10 @@ class Pry::Config::Default < Pry::Config
 
   state.each do |key, value|
     define_method(key) do
-      ivar = "@#{key}"
-      if instance_variable_defined?(ivar)
-        return instance_variable_get(ivar)
-      else
-        instance_variable_set(ivar, value.call)
+      if state[key] == value
+        state[key] = value.call
       end
+      state[key]
     end
   end