def number_with_delimiter(number, options = {})
options.symbolize_keys!
begin
Float(number)
rescue ArgumentError, TypeError
if options[:raise]
raise InvalidNumberError, number
else
return number
end
end
defaults = I18n.translate('number.format''number.format', :locale => options[:locale], :default => {})
options = options.reverse_merge(defaults)
parts = number.to_s.to_str.split('.')
parts[0].gsub!(/(\d)(?=(\d\d\d)+(?!\d))/, "\\1#{options[:delimiter]}")
parts.join(options[:separator]).html_safe
end