A simple patch of the mongrel_upload_progress gem that allows us to use regular expressions in the :path_info parameter.

mongrel_upload_progress.patch

--- lib/mongrel_upload_progress/init.rb
+++ lib/mongrel_upload_progress/init.rb
@@ -32,8 +32,8 @@
 
   private
     def upload_notify(action, params, *args)
-      return unless @path_info.include?(params['PATH_INFO']) &&
-        params[Mongrel::Const::REQUEST_METHOD] == 'POST' &&
+      return unless params[Mongrel::Const::REQUEST_METHOD] == 'POST' &&
+        @path_info.detect { |r| r.is_a?(Regexp) ? r =~ params['PATH_INFO'] : r == params['PATH_INFO'] } &&
         upload_id = Mongrel::HttpRequest.query_parse(params['QUERY_STRING'])['upload_id']
       if action == :mark
         last_checked_time = Mongrel::Uploads.last_checked(upload_id)