From ba2d17b8d1e282ec6747efc1a4c9999b46c70ddc Mon Sep 17 00:00:00 2001
From: Misty De Meo <mistydemeo@gmail.com>
Date: Fri, 20 Jul 2012 12:01:37 -0500
Subject: [PATCH] Keg#unlink: Don't try to unlink if keg is unlinked

---
 Library/Homebrew/keg.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 027b9d4585..1e12d712e1 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -29,6 +29,8 @@ class Keg < Pathname
 
   def unlink
     n=0
+    return n if !linked?
+
     %w[bin etc lib include sbin share var].map{ |d| self/d }.each do |src|
       next unless src.exist?
       src.find do |src|