From 021c6afb730c936b31039e297745f521a2df782e Mon Sep 17 00:00:00 2001
From: phinze <paul.t.hinze@gmail.com>
Date: Sun, 28 Apr 2013 11:07:02 -0500
Subject: [PATCH] allow linkables to be set to none

sometimes it doesn't make sense for a cask to link anything out to the
Applications dir
---
 Casks/adobe-air.rb    |  2 ++
 lib/cask/dsl.rb       |  6 +++++-
 test/cask/dsl_test.rb | 10 ++++++++++
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/Casks/adobe-air.rb b/Casks/adobe-air.rb
index e47b63bec..bf5e9af93 100644
--- a/Casks/adobe-air.rb
+++ b/Casks/adobe-air.rb
@@ -6,4 +6,6 @@ class AdobeAir < Cask
   #caveat 'You need to run {{install_path}}/AdobeAIRInstaller.app to actually install Adobe AIR'
   
   sha1 '8fbd2dffc20442903d8b51e7362a3191f39752b4'
+
+  link :app, :none
 end
diff --git a/lib/cask/dsl.rb b/lib/cask/dsl.rb
index fd9f51e7a..1cb438fc6 100644
--- a/lib/cask/dsl.rb
+++ b/lib/cask/dsl.rb
@@ -34,7 +34,11 @@ module Cask::DSL
     end
 
     def link(type, *files)
-      linkables[type] += files
+      if files == [:none]
+        linkables[type] = []
+      else
+        linkables[type] += files
+      end
     end
 
     attr_reader :sums
diff --git a/test/cask/dsl_test.rb b/test/cask/dsl_test.rb
index edd540278..aaeb8034a 100644
--- a/test/cask/dsl_test.rb
+++ b/test/cask/dsl_test.rb
@@ -59,4 +59,14 @@ describe Cask::DSL do
     instance = CaskWithLinkables.new
     Array(instance.linkables[:app]).must_equal %w[Foo.app Bar.app]
   end
+
+  it "allow linkables to be set to empty" do
+    CaskWithNoLinkables = Class.new(Cask)
+    CaskWithNoLinkables.class_eval do
+      link :app, :none
+    end
+
+    instance = CaskWithNoLinkables.new
+    Array(instance.linkable_apps).must_equal %w[]
+  end
 end