delete_matched

# File activesupport/lib/active_support/cache/file_store.rb, line 32
      def delete_matched(matcher, options = nil)
        super
        search_dir(@cache_path) do |f|
          if f =~ matcher
            begin
              File.delete(f)
            rescue SystemCallError => e
              # If there's no cache, then there's nothing to complain about
            end
          end
        end
      end