subject is automatically looked up on I18n using mailer_name and action_name as scope as in t('.subject')

actionmailer/CHANGELOG

@@ -1,5 +1,7 @@
 *Rails 3.0.0 [beta 4] (June 8th, 2010)*
 
+* subject is automatically looked up on I18n using mailer_name and action_name as scope as in t(".subject") [JK]
+
 * Changed encoding behaviour of mail, so updated tests in actionmailer and bumped mail version to 2.2.1 [ML]
 
 * Added ability to pass Proc objects to the defaults hash [ML]

actionmailer/lib/action_mailer/base.rb

@@ -657,7 +657,7 @@ module ActionMailer #:nodoc:
 
     def default_i18n_subject #:nodoc:
       mailer_scope = self.class.mailer_name.gsub('/', '.')
-      I18n.t(:subject, :scope => [:actionmailer, mailer_scope, action_name], :default => action_name.humanize)
+      I18n.t(:subject, :scope => [mailer_scope, action_name], :default => action_name.humanize)
     end
 
     def collect_responses_and_parts_order(headers) #:nodoc:

actionmailer/test/base_test.rb

@@ -325,7 +325,7 @@ class BaseTest < ActiveSupport::TestCase
     email = BaseMailer.welcome(:subject => nil)
     assert_equal "Welcome", email.subject
 
-    I18n.backend.store_translations('en', :actionmailer => {:base_mailer => {:welcome => {:subject => "New Subject!"}}})
+    I18n.backend.store_translations('en', :base_mailer => {:welcome => {:subject => "New Subject!"}})
     email = BaseMailer.welcome(:subject => nil)
     assert_equal "New Subject!", email.subject
   end