3 files changed, 13 insertions, 21 deletions
diff --git a/actionpack/lib/action_dispatch/http/upload.rb b/actionpack/lib/action_dispatch/http/upload.rb
index a15ad28f16..94fa747a79 100644
--- a/actionpack/lib/action_dispatch/http/upload.rb
+++ b/actionpack/lib/action_dispatch/http/upload.rb
@@ -11,24 +11,13 @@ module ActionDispatch
         raise(ArgumentError, ':tempfile is required') unless @tempfile
       end
 
-      def open
-        @tempfile.open
-      end
-
-      def path
-        @tempfile.path
-      end
-
       def read(*args)
         @tempfile.read(*args)
       end
 
-      def rewind
-        @tempfile.rewind
-      end
-
-      def size
-        @tempfile.size
+      # Delegate these methods to the tempfile.
+      [:open, :path, :rewind, :size].each do |method|
+        class_eval "def #{method}; @tempfile.#{method}; end"
       end
       
       private
diff --git a/actionpack/lib/action_dispatch/railtie.rb b/actionpack/lib/action_dispatch/railtie.rb
index f51cc3711b..1af89858d1 100644
--- a/actionpack/lib/action_dispatch/railtie.rb
+++ b/actionpack/lib/action_dispatch/railtie.rb
@@ -1,10 +1,9 @@
 require "action_dispatch"
-require "rails"
 
 module ActionDispatch
   class Railtie < Rails::Railtie
     config.action_dispatch = ActiveSupport::OrderedOptions.new
-    config.action_dispatch.x_sendfile_header = ""
+    config.action_dispatch.x_sendfile_header = nil
     config.action_dispatch.ip_spoofing_check = true
     config.action_dispatch.show_exceptions = true
     config.action_dispatch.best_standards_support = true
diff --git a/actionpack/lib/action_dispatch/routing/url_for.rb b/actionpack/lib/action_dispatch/routing/url_for.rb
index 480144fe9d..30048cd48a 100644
--- a/actionpack/lib/action_dispatch/routing/url_for.rb
+++ b/actionpack/lib/action_dispatch/routing/url_for.rb
@@ -131,16 +131,20 @@ module ActionDispatch
       #
       # Examples:
       #
-      #    url_for :controller => 'tasks', :action => 'testing', :host => 'somehost.org', :port => '8080'    # => 'http://somehost.org:8080/tasks/testing'
-      #    url_for :controller => 'tasks', :action => 'testing', :host => 'somehost.org', :anchor => 'ok', :only_path => true    # => '/tasks/testing#ok'
-      #    url_for :controller => 'tasks', :action => 'testing', :trailing_slash => true  # => 'http://somehost.org/tasks/testing/'
-      #    url_for :controller => 'tasks', :action => 'testing', :host => 'somehost.org', :number => '33'  # => 'http://somehost.org/tasks/testing?number=33'
+      #    url_for :controller => 'tasks', :action => 'testing', :host => 'somehost.org', :port => '8080'
+      #    # => 'http://somehost.org:8080/tasks/testing'
+      #    url_for :controller => 'tasks', :action => 'testing', :host => 'somehost.org', :anchor => 'ok', :only_path => true
+      #    # => '/tasks/testing#ok'
+      #    url_for :controller => 'tasks', :action => 'testing', :trailing_slash => true
+      #    # => 'http://somehost.org/tasks/testing/'
+      #    url_for :controller => 'tasks', :action => 'testing', :host => 'somehost.org', :number => '33'
+      #    # => 'http://somehost.org/tasks/testing?number=33'
       def url_for(options = nil)
         case options
         when String
           options
         when nil, Hash
-          _routes.url_for((options || {}).reverse_merge!(url_options).symbolize_keys)
+          _routes.url_for((options || {}).reverse_merge(url_options).symbolize_keys)
         else
           polymorphic_url(options)
         end