lib/rouge/lexers/haml.rb in rouge-3.2.1 vs lib/rouge/lexers/haml.rb in rouge-3.3.0

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*- #
+# frozen_string_literal: true
 
 module Rouge
   module Lexers
     # A lexer for the Haml templating system for Ruby.
     # @see http://haml.info