rails 3.1.1 & i18n gem & number_to_currency

gistfile1.rb

require 'i18n/backend/base'

module I18n
  module Backend
    module Base
      def translate(locale, key, options = {})
        raise InvalidLocale.new(locale) unless locale
        entry = key && lookup(locale, key, options[:scope], options)

        if options.empty?
          entry = resolve(locale, key, entry, options)
        else
          count, default = options.values_at(:count, :default)
          values = options.except(*RESERVED_KEYS)
          # ************ START BUG FIX ************
          entry = entry.nil? && default.present? && !default.empty? ?
          # ************ END BUG FIX ************
          # ************ START ORIGINAL CODE ************
          # entry = entry.nil? && default ?
          # ************ END ORIGINAL CODE ************
            default(locale, key, default, options) : resolve(locale, key, entry, options)
        end

        throw(:exception, I18n::MissingTranslation.new(locale, key, options)) if entry.nil?
        entry = entry.dup if entry.is_a?(String)

        entry = pluralize(locale, entry, count) if count
        entry = interpolate(locale, entry, values) if values
        entry
      end
    end
  end
end