Turn on FancyIndexing.

lib/jekyll/commands/serve.rb

@@ -122,9 +122,10 @@ module Jekyll
 
         # recreate NondisclosureName under utf-8 circumstance
         def file_handler_options
-          fh_option = WEBrick::Config::FileHandler
+          WEBrick::Config::FileHandler.merge({
-          fh_option[:NondisclosureName] = ['.ht*','~*']
+            :FancyIndexing     => true,
-          fh_option
+            :NondisclosureName => ['.ht*','~*']
+          })
         end
 
       end