Default $KCODE to 'u' to enable the multibyte-safe chars proxy. [Koz]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5319 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/CHANGELOG

 *SVN*
 
+* Set $KCODE to 'u' by default to enable the multibyte safe String#chars proxy. [Koz]
+
 * Added config.plugins to control which plugins are loaded #6269 [skaes]. By default, everything in vendor/plugins will be loaded, but if you specify config.plugins, only those will be loaded. Example:
 
     config.plugins = %w[ routing_navigator simply_helpful ]

railties/lib/initializer.rb

@@ -83,6 +83,7 @@ def process
       set_autoload_paths
       load_environment
 
+      initialize_encoding
       initialize_database
       initialize_logger
       initialize_framework_logging
@@ -197,6 +198,13 @@ def load_observers
       ActiveRecord::Base.instantiate_observers
     end
 
+    # This initialzation sets $KCODE to 'u' to enable the multibyte safe operations.
+    # Plugin authors supporting other encodings should override this behaviour and 
+    # set the relevant +default_charset+ on ActionController::Base
+    def initialize_encoding
+      $KCODE='u'
+    end
+
     # This initialization routine does nothing unless <tt>:active_record</tt>
     # is one of the frameworks to load (Configuration#frameworks). If it is,
     # this sets the database configuration from Configuration#database_configuration