class Sass::Script::Parser

def parse_mixin_include_arglist
  args = []
  if try_tok(:lparen)
    args = arglist || args
    assert_tok(:rparen)
  end
  assert_done
  args.each {|a| a.options = @options}
  args
rescue Sass::SyntaxError => e
  e.modify_backtrace :line => @lexer.line, :filename => @options[:filename]
  raise e
end