From 4743bc96e23aaa7abee5488e533fefc614120029 Mon Sep 17 00:00:00 2001
From: Dave Bayer <bayer@math.columbia.edu>
Date: Sat, 20 Aug 2011 14:39:32 -0700
Subject: [PATCH] Fixes Homebrew/homebrew#7114; Cache confuses --HEAD and
 non--HEAD svn installs

Signed-off-by: Max Howell <max@methylblue.com>
---
 Library/Homebrew/download_strategy.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index a265e0b355..17b72efd37 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -195,6 +195,7 @@ class SubversionDownloadStrategy <AbstractDownloadStrategy
   def initialize url, name, version, specs
     super
     @unique_token="#{name}--svn" unless name.to_s.empty? or name == '__UNKNOWN__'
+    @unique_token += "--HEAD" if ARGV.include? '--HEAD'
     @co=HOMEBREW_CACHE+@unique_token
   end