From fb9f4bbccc640fb4b86557885e5cfdc0cb2ce743 Mon Sep 17 00:00:00 2001
From: Adam Vandenberg <flangy@gmail.com>
Date: Sun, 4 Apr 2010 13:45:02 -0700
Subject: [PATCH] Don't link_dir if the target doesn't exist.

Fixes Homebrew/homebrew#1115 for Ruby 1.9, thanks to assaf.
---
 Library/Homebrew/keg.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 957d9806db..3413775a9c 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -80,6 +80,7 @@ protected
   # symlinks the contents of self+foo recursively into /usr/local/foo
   def link_dir foo
     root = self+foo
+    return unless root.exist?
 
     root.find do |src|
       next if src == root