4 files changed, 76 insertions, 16 deletions

diff --git a/actionview/lib/action_view/template/handlers.rb b/actionview/lib/action_view/template/handlers.rb
index d9cddc0040..33bfcb458c 100644
--- a/actionview/lib/action_view/template/handlers.rb
+++ b/actionview/lib/action_view/template/handlers.rb
@@ -32,6 +32,15 @@ module ActionView #:nodoc:
         @@template_extensions = nil
       end
 
+      # Opposite to register_template_handler.
+      def unregister_template_handler(*extensions)
+        extensions.each do |extension|
+          handler = @@template_handlers.delete extension.to_sym
+          @@default_template_handlers = nil if @@default_template_handlers == handler
+        end
+        @@template_extensions = nil
+      end
+
       def template_handler_extensions
         @@template_handlers.keys.map {|key| key.to_s }.sort
       end
diff --git a/actionview/lib/action_view/template/html.rb b/actionview/lib/action_view/template/html.rb
new file mode 100644
index 0000000000..0321f819b5
--- /dev/null
+++ b/actionview/lib/action_view/template/html.rb
@@ -0,0 +1,34 @@
+module ActionView #:nodoc:
+  # = Action View HTML Template
+  class Template
+    class HTML #:nodoc:
+      attr_accessor :type
+
+      def initialize(string, type = nil)
+        @string = string.to_s
+        @type   = Types[type] || type if type
+        @type ||= Types[:html]
+      end
+
+      def identifier
+        'html template'
+      end
+
+      def inspect
+        'html template'
+      end
+
+      def to_str
+        ERB::Util.h(@string)
+      end
+
+      def render(*args)
+        to_str
+      end
+
+      def formats
+        [@type.respond_to?(:ref) ? @type.ref : @type.to_s]
+      end
+    end
+  end
+end
diff --git a/actionview/lib/action_view/template/resolver.rb b/actionview/lib/action_view/template/resolver.rb
index 3a3b74cdd5..d29d020c17 100644
--- a/actionview/lib/action_view/template/resolver.rb
+++ b/actionview/lib/action_view/template/resolver.rb
@@ -154,7 +154,8 @@ module ActionView
       cached = nil
       templates.each do |t|
         t.locals         = locals
-        t.formats        = details[:formats] || [:html] if t.formats.empty?
+        t.formats        = details[:formats]  || [:html] if t.formats.empty?
+        t.variants       = details[:variants] || []      if t.variants.empty?
         t.virtual_path ||= (cached ||= build_path(*path_info))
       end
     end
@@ -180,25 +181,41 @@ module ActionView
     def query(path, details, formats)
       query = build_query(path, details)
 
-      # deals with case-insensitive file systems.
-      sanitizer = Hash.new { |h,dir| h[dir] = Dir["#{dir}/*"] }
-
-      template_paths = Dir[query].reject { |filename|
-        File.directory?(filename) ||
-          !sanitizer[File.dirname(filename)].include?(filename)
-      }
+      template_paths = find_template_paths query
 
       template_paths.map { |template|
-        handler, format = extract_handler_and_format(template, formats)
-        contents = File.binread template
+        handler, format, variant = extract_handler_and_format_and_variant(template, formats)
+        contents = File.binread(template)
 
         Template.new(contents, File.expand_path(template), handler,
           :virtual_path => path.virtual,
           :format       => format,
-          :updated_at   => mtime(template))
+          :variant      => variant,
+          :updated_at   => mtime(template)
+        )
       }
     end
 
+    if RUBY_VERSION >= '2.2.0'
+      def find_template_paths(query)
+        Dir[query].reject { |filename|
+          File.directory?(filename) ||
+            # deals with case-insensitive file systems.
+            !File.fnmatch(query, filename, File::FNM_EXTGLOB)
+        }
+      end
+    else
+      def find_template_paths(query)
+        # deals with case-insensitive file systems.
+        sanitizer = Hash.new { |h,dir| h[dir] = Dir["#{dir}/*"] }
+
+        Dir[query].reject { |filename|
+          File.directory?(filename) ||
+            !sanitizer[File.dirname(filename)].include?(filename)
+        }
+      end
+    end
+
     # Helper for building query glob string based on resolver's pattern.
     def build_query(path, details)
       query = @pattern.dup
@@ -225,10 +242,10 @@ module ActionView
       File.mtime(p)
     end
 
-    # Extract handler and formats from path. If a format cannot be a found neither
+    # Extract handler, formats and variant from path. If a format cannot be found neither
     # from the path, or the handler, we should return the array of formats given
     # to the resolver.
-    def extract_handler_and_format(path, default_formats)
+    def extract_handler_and_format_and_variant(path, default_formats)
       pieces = File.basename(path).split(".")
       pieces.shift
 
@@ -240,10 +257,10 @@ module ActionView
       end
 
       handler = Template.handler_for_extension(extension)
-      format  = pieces.last && pieces.last.split(EXTENSIONS[:variants], 2).first # remove variant from format
+      format, variant = pieces.last.split(EXTENSIONS[:variants], 2) if pieces.last
       format  &&= Template::Types[format]
 
-      [handler, format]
+      [handler, format, variant]
     end
   end
 
diff --git a/actionview/lib/action_view/template/text.rb b/actionview/lib/action_view/template/text.rb
index 859c7bc3ce..04f5b8d17a 100644
--- a/actionview/lib/action_view/template/text.rb
+++ b/actionview/lib/action_view/template/text.rb
@@ -27,7 +27,7 @@ module ActionView #:nodoc:
       end
 
       def formats
-        [@type.to_sym]
+        [@type.respond_to?(:ref) ? @type.ref : @type.to_s]
       end
     end
   end