class ActiveSupport::OrderedOptions

def method_missing(name, *args)
  name_string = +name.to_s
  if name_string.chomp!("=")
    self[name_string] = args.first
  else
    bangs = name_string.chomp!("!")
    if bangs
      self[name_string].presence || raise(KeyError.new(":#{name_string} is blank"))
    else
      self[name_string]
    end
  end
end