From bf828aa36bcee07d6a030b720e12c525ab86c854 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Tue, 4 Jun 2013 20:35:07 +0100
Subject: [PATCH] Bottle DSL: allow checksums access.

---
 Library/Homebrew/formula_support.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/formula_support.rb b/Library/Homebrew/formula_support.rb
index 54f00f2623..114e46de4f 100644
--- a/Library/Homebrew/formula_support.rb
+++ b/Library/Homebrew/formula_support.rb
@@ -90,7 +90,8 @@ class Bottle < SoftwareSpec
   # a Hash, which indicates the platform the checksum applies on.
   Checksum::TYPES.each do |cksum|
     class_eval <<-EOS, __FILE__, __LINE__ + 1
-      def #{cksum}(val)
+      def #{cksum}(val=nil)
+        return @#{cksum} if val.nil?
         @#{cksum} ||= Hash.new
         case val
         when Hash