From d8756075f4e44fd4e431e39fbbe6ce5c85813f5f Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Thu, 20 Jun 2013 16:25:58 -0500
Subject: [PATCH] Use a Set for skip_clean_paths

---
 Library/Homebrew/formula.rb | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index b7739a74ad..c981ee3c0f 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -789,10 +789,9 @@ class Formula
         return
       end
 
-      @skip_clean_paths ||= []
       paths.each do |p|
         p = p.to_s unless p == :la # Keep :la in paths as a symbol
-        @skip_clean_paths << p unless @skip_clean_paths.include? p
+        skip_clean_paths << p
       end
     end
 
@@ -801,7 +800,7 @@ class Formula
     end
 
     def skip_clean_paths
-      @skip_clean_paths or []
+      @skip_clean_paths ||= Set.new
     end
 
     def keg_only reason, explanation=nil