Significantly improved internal encoding heuristics and support.

* Default Encoding.default_internal to UTF-8
* Eliminated the use of file-wide magic comments to coerce code evaluated inside the file
* Read templates as BINARY, use default_external or template-wide magic comments
  inside the Template to set the initial encoding
  * This means that template handlers in Ruby 1.9 will receive Strings encoded
    in default_internal (UTF-8 by default)
* Create a better Exception for encoding issues, and use it when the template
  source has bytes that are not compatible with the specified encoding
* Allow template handlers to opt-into handling BINARY. If they do so, they
  need to do some of their own manual encoding work
* Added a "Configuration Gotchas" section to the intro Rails Guide instructing
  users to use UTF-8 for everything
* Use config.encoding= in Ruby 1.8, and raise if a value that is an invalid
  $KCODE value is used

Also:
* Fixed a few tests that were assert() rather than assert_equal() and
  were caught by Minitest requiring a String for the message
* Fixed a test where an assert_select was misformed, also caught by
  Minitest being more restrictive
* Fixed a test where a Rack response was returning a String rather
  than an Enumerable

1 files changed, 4 insertions, 2 deletions

diff --git a/actionpack/lib/action_view.rb b/actionpack/lib/action_view.rb
index 5e3b2ec51b..9f56cca869 100644
--- a/actionpack/lib/action_view.rb
+++ b/actionpack/lib/action_view.rb
@@ -51,7 +51,9 @@ module ActionView
 
     autoload :MissingTemplate,    'action_view/template/error'
     autoload :ActionViewError,    'action_view/template/error'
-    autoload :TemplateError,     'action_view/template/error'
+    autoload :EncodingError,      'action_view/template/error'
+    autoload :TemplateError,      'action_view/template/error'
+    autoload :WrongEncodingError, 'action_view/template/error'
 
     autoload :TemplateHandler,   'action_view/template'
     autoload :TemplateHandlers,  'action_view/template'
@@ -59,7 +61,7 @@ module ActionView
 
   autoload :TestCase, 'action_view/test_case'
 
-  ENCODING_FLAG = "#.*coding[:=]\s*(\S+)[ \t]*"
+  ENCODING_FLAG = '#.*coding[:=]\s*(\S+)[ \t]*'
 end
 
 require 'active_support/i18n'