class Liquid::Include

def initialize(tag_name, markup, options)
  super
  if markup =~ SYNTAX
    template_name = Regexp.last_match(1)
    variable_name = Regexp.last_match(3)
    @alias_name         = Regexp.last_match(5)
    @variable_name_expr = variable_name ? parse_expression(variable_name) : nil
    @template_name_expr = parse_expression(template_name)
    @attributes         = {}
    markup.scan(TagAttributes) do |key, value|
      @attributes[key] = parse_expression(value)
    end
  else
    raise SyntaxError, options[:locale].t("errors.syntax.include")
  end
end