class RuboCop::Cop::Style::Alias

def add_offense_for_args(node)
  existing_args  = node.children.map(&:source).join(' ')
  preferred_args = node.children.map { |a| a.source[1..-1] }.join(' ')
  arg_ranges     = node.children.map(&:source_range)
  msg            = format(MSG_SYMBOL_ARGS,
                          prefer: preferred_args,
                          current: existing_args)
  add_offense(node, location: arg_ranges.reduce(&:join), message: msg)
end