Merge branch 'master' into erbout

actionpack/lib/action_controller/rack_process.rb

@@ -189,6 +189,8 @@ def each(&callback)
       if @body.respond_to?(:call)
         @writer = lambda { |x| callback.call(x) }
         @body.call(self, self)
+      elsif @body.is_a?(String)
+        @body.each_line(&callback)
       else
         @body.each(&callback)
       end

actionpack/lib/action_controller/routing/segments.rb

@@ -249,7 +249,7 @@ def interpolation_chunk(value_code = "#{local_name}")
       end
 
       def extract_value
-        "#{local_name} = hash[:#{key}] && hash[:#{key}].collect { |path_component| URI.escape(path_component.to_param, ActionController::Routing::Segment::UNSAFE_PCHAR) }.to_param #{"|| #{default.inspect}" if default}"
+        "#{local_name} = hash[:#{key}] && Array(hash[:#{key}]).collect { |path_component| URI.escape(path_component.to_param, ActionController::Routing::Segment::UNSAFE_PCHAR) }.to_param #{"|| #{default.inspect}" if default}"
       end
 
       def default