# File lib/active_support/vendor/i18n-0.4.1/i18n/backend/transliterator.rb, line 17
      def self.get(rule = nil)
        if !rule || rule.kind_of?(Hash)
          HashTransliterator.new(rule)
        elsif rule.kind_of? Proc
          ProcTransliterator.new(rule)
        else
          raise I18n::ArgumentError, "Transliteration rule must be a proc or a hash."
        end
      end