Fixed template lookups from outside the rails root [#1557 state:resolved]

actionpack/lib/action_controller/rescue.rb

@@ -39,7 +39,7 @@ module Rescue
     }
 
     RESCUES_TEMPLATE_PATH = ActionView::PathSet::Path.new(
-      "#{File.dirname(__FILE__)}/templates", true)
+      File.join(File.dirname(__FILE__), "templates"), true)
 
     def self.included(base) #:nodoc:
       base.cattr_accessor :rescue_responses

actionpack/lib/action_view/paths.rb

@@ -57,6 +57,10 @@ def to_s
         end
       end
 
+      def to_str
+        path.to_str
+      end
+
       def ==(path)
         to_str == path.to_str
       end

actionpack/lib/action_view/template.rb

@@ -105,7 +105,7 @@ def valid_extension?(extension)
       def find_full_path(path, load_paths)
         load_paths = Array(load_paths) + [nil]
         load_paths.each do |load_path|
-          file = [load_path, path].compact.join('/')
+          file = load_path ? "#{load_path.to_str}/#{path}" : path
           return load_path, file if File.file?(file)
         end
         raise MissingTemplate.new(load_paths, path)