Action builder supports indexing middlewares by name

lib/vagrant/action/builder.rb

@@ -101,6 +101,7 @@ module Vagrant
       def index(object)
         stack.each_with_index do |item, i|
           return i if item[0] == object
+          return i if item[0].respond_to?(:name) && item[0].name == object
         end
 
         nil

test/unit/vagrant/action/builder_test.rb

@@ -73,6 +73,19 @@ describe Vagrant::Action::Builder do
       data[:data].should == [2, 1]
     end
 
+    it "can insert by name" do
+      # Create the proc then make sure it has a name
+      bar_proc = appender_proc(2)
+      def bar_proc.name; :bar; end
+
+      instance.use appender_proc(1)
+      instance.use bar_proc
+      instance.insert_before :bar, appender_proc(3)
+      instance.call(data)
+
+      data[:data].should == [1, 3, 2]
+    end
+
     it "can insert next to a previous object" do
       proc2 = appender_proc(2)
       instance.use appender_proc(1)