exceptions.rb in i18n-0.8.0.beta1

- old
+ new

@@ -36,15 +36,15 @@
       @filename, @exception_message = filename, exception_message
       super "can not load translations from #{filename}: #{exception_message}"
     end
   end
 
-  class MissingTranslation
+  class MissingTranslation < ArgumentError
     module Base
       attr_reader :locale, :key, :options
 
-      def initialize(locale, key, options = nil)
-        @key, @locale, @options = key, locale, options.dup || {}
+      def initialize(locale, key, options = {})
+        @key, @locale, @options = key, locale, options.dup
         options.each { |k, v| self.options[k] = v.inspect if v.is_a?(Proc) }
       end
 
       def keys
         @keys ||= I18n.normalize_keys(locale, key, options[:scope]).tap do |keys|