Still copy application configuration to generator even if they are required...

Still copy application configuration to generator even if they are required earlier. Also tidy up the guide a little bit.

railties/guides/source/generators.textile

@@ -322,14 +322,10 @@ config.generators do |g|
   g.template_engine :erb
   g.test_framework  :shoulda, :fixture => false
   g.stylesheets     false
-end
-</ruby>
-
-And at the end of the same file:
 
-<ruby>
-require 'rails/generators'
-Rails::Generators.fallbacks[:shoulda] = :test_unit
+  # Add a fallback!
+  g.fallbacks[:should] = :test_unit
+end
 </ruby>
 
 Now, if create a Comment scaffold, you will see that shoulda generators are being invoked, and at the end, they are just falling back to test unit generators:
@@ -361,7 +357,7 @@ $ rails generate scaffold Comment body:text
       create        test/unit/helpers/comments_helper_test.rb
 </shell>
 
-Such tool allows your generators to have single responsibility, increasing the code reuse and reducing the amount of code duplication.
+Such tool allows your generators to have single responsibility, increasing the code reuse and reducing the amount of duplication.
 
 h3. Changelog
 

railties/lib/rails/commands/destroy.rb

 require 'rails/generators'
+Rails::Generators.configure!
 
 if [nil, "-h", "--help"].include?(ARGV.first)
   Rails::Generators.help 'destroy'

railties/lib/rails/commands/generate.rb

 require 'rails/generators'
+Rails::Generators.configure!
 
 if [nil, "-h", "--help"].include?(ARGV.first)
   Rails::Generators.help 'generate'

railties/lib/rails/generators.rb

@@ -68,6 +68,7 @@ def self.configure!(config = Rails.application.config.generators) #:nodoc:
       options.deep_merge! config.options
       fallbacks.merge! config.fallbacks
       templates_path.concat config.templates
+      templates_path.uniq!
     end
 
     def self.templates_path
@@ -328,10 +329,5 @@ def self.namespaces_to_paths(namespaces) #:nodoc:
         paths.uniq!
         paths
       end
-
   end
-end
-
-# If the application was already defined, configure generators,
-# otherwise you have to configure it by hand.
-Rails::Generators.configure! if Rails.respond_to?(:application) && Rails.application
+end
\ No newline at end of file

railties/test/generators/generators_test_helper.rb

 require 'abstract_unit'
+require 'rails/generators'
+require 'rails/generators/test_case'
 
 module Rails
   def self.root
@@ -8,8 +10,9 @@ def self.root
 Rails.application.config.root = Rails.root
 Rails.application.config.generators.templates = [File.join(Rails.root, "lib", "templates")]
 
-require 'rails/generators'
-require 'rails/generators/test_case'
+# Call configure to load the settings from
+# Rails.application.config.generators to Rails::Generators
+Rails::Generators.configure!
 
 require 'active_record'
 require 'action_dispatch'