Tweak resource manipulator order

middleman-core/lib/middleman-core/core_extensions/front_matter.rb

@@ -10,6 +10,9 @@ require 'active_support/json'
 # Extensions namespace
 module Middleman::CoreExtensions
   class FrontMatter < ::Middleman::Extension
+    # Try to run after routing but before directory_indexes
+    self.resource_list_manipulator_priority = 90
+
     YAML_ERRORS = [StandardError]
 
     # https://github.com/tenderlove/psych/issues/23

middleman-core/lib/middleman-core/core_extensions/routing.rb

@@ -4,7 +4,7 @@ module Middleman
     class Routing < Extension
       # This should always run late, but not as late as :directory_indexes,
       # so it can add metadata to any pages generated by other extensions
-      self.resource_list_manipulator_priority = 90
+      self.resource_list_manipulator_priority = 80
 
       def initialize(app, options_hash={}, &block)
         super