fix builder error

fixtures/indexable-app/build/a_folder/needs_index.html

@@ -1 +0,0 @@
-Indexable

fixtures/indexable-app/build/leave_me_alone.html

@@ -1 +0,0 @@
-Stay away

fixtures/indexable-app/build/needs_index/index.html

@@ -1 +0,0 @@
-Indexable

fixtures/indexable-app/build/regular/index.html

@@ -1 +0,0 @@
-Regular

lib/middleman/builder.rb

@@ -35,10 +35,10 @@ module Middleman
     include Middleman::ThorActions
     
     def self.shared_rack
-      @shared_rack ||= begin  
+      @shared_rack ||= begin
         mock = ::Rack::MockSession.new(SHARED_SERVER)
         sess = ::Rack::Test::Session.new(mock)
-        # sess.get("/")
+        response = sess.get("__middleman__")
         sess
       end
     end

lib/middleman/features/directory_indexes.rb

@@ -5,16 +5,21 @@ module Middleman::Features::DirectoryIndexes
       app.extend ClassMethods
       
       app.build_reroute do |destination, request_path|
+        $stderr.puts "_: " + request_path
         index_ext = File.extname(app.settings.index_file)
         new_index_path = "/#{app.settings.index_file}"
       
         indexed_path = request_path.gsub(/\/$/, "") + index_ext
         
+        $stderr.puts "*: " + request_path
         if app.settings.ignored_directory_indexes.include?(request_path)
+          $stderr.puts "1: " + request_path
           false
         elsif request_path =~ /#{new_index_path}$/
+          $stderr.puts "2: " + request_path
           false
         else
+          $stderr.puts "3: " + request_path
           [
             destination.gsub(/#{index_ext.gsub(".", "\\.")}$/, new_index_path),
             request_path