lib/sass/callbacks.rb in haml-edge-3.1.73 vs lib/sass/callbacks.rb in haml-edge-3.1.74

@@ -21,10 +21,24 @@
   # @example Use a callback
   #   m = Munger.new
   #   m.on_string_munged {|str, res| puts "#{str} was munged into #{res}!"}
   #   m.munge "bar" #=> bar was munged into bbaarr!
   module Callbacks
+    # Automatically includes {InstanceMethods}
+    # when something extends this module.
+    #
+    # @param base [Module]
+    def self.extended(base)
+      base.send(:include, InstanceMethods)
+    end
     protected
+
+    module InstanceMethods
+      # Removes all callbacks registered against this object.
+      def clear_callbacks!
+        @_sass_callbacks = {}
+      end
+    end
 
     # Define a callback with the given name.
     # This will define an `on_#{name}` method
     # that registers a block,
     # and a `run_#{name}` method that runs that block