From 3d3ff997c51b50742a1fa55d1bbb8045d67d4fea Mon Sep 17 00:00:00 2001
From: Jack Nagel
Date: Fri, 14 Feb 2014 15:31:29 -0500
Subject: VCSDownloadStrategy: document acceptable ref types

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

diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index e9907cf38..e69a45b55 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -39,6 +39,8 @@ class AbstractDownloadStrategy
 end
 
 class VCSDownloadStrategy < AbstractDownloadStrategy
+  REF_TYPES = [:branch, :revision, :revisions, :tag].freeze
+
   def initialize name, resource
     super
     @ref_type, @ref = destructure_spec_hash(resource.specs)
-- 
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