Merge pull request ruby-i18n#503 from CrAsH1101/preserve-count-option

Preserve count option

lib/i18n/backend/base.rb

@@ -143,7 +143,7 @@ def resolve(locale, object, subject, options = EMPTY_HASH)
           result = catch(:exception) do
             case subject
             when Symbol
-              I18n.translate(subject, **options.merge(:locale => locale, :throw => true).except(:count))
+              I18n.translate(subject, **options.merge(:locale => locale, :throw => true))
             when Proc
               date_or_time = options.delete(:object) || object
               resolve(locale, object, subject.call(date_or_time, options))
@@ -163,7 +163,7 @@ def resolve(locale, object, subject, options = EMPTY_HASH)
         #   not standard with regards to the CLDR pluralization rules.
         # Other backends can implement more flexible or complex pluralization rules.
         def pluralize(locale, entry, count)
-          return entry unless entry.is_a?(Hash) && count
+          return entry unless entry.is_a?(Hash) && count && entry.values.none? { |v| v.is_a?(Hash) }
 
           key = pluralization_key(entry, count)
           raise InvalidPluralizationData.new(entry, count, key) unless entry.has_key?(key)

lib/i18n/backend/pluralization.rb

@@ -29,7 +29,7 @@ module Pluralization
       # either pick a special :zero translation even for languages where the
       # pluralizer does not return a :zero key.
       def pluralize(locale, entry, count)
-        return entry unless entry.is_a?(Hash) and count
+        return entry unless entry.is_a?(Hash) && count && entry.values.none? { |v| v.is_a?(Hash) }
 
         pluralizer = pluralizer(locale)
         if pluralizer.respond_to?(:call)

test/backend/fallbacks_test.rb

@@ -8,7 +8,7 @@ class Backend < I18n::Backend::Simple
   def setup
     super
     I18n.backend = Backend.new
-    store_translations(:en, :foo => 'Foo in :en', :bar => 'Bar in :en', :buz => 'Buz in :en', :interpolate => 'Interpolate %{value}')
+    store_translations(:en, :foo => 'Foo in :en', :bar => 'Bar in :en', :buz => 'Buz in :en', :interpolate => 'Interpolate %{value}', :interpolate_count => 'Interpolate %{value} %{count}')
     store_translations(:de, :bar => 'Bar in :de', :baz => 'Baz in :de')
     store_translations(:'de-DE', :baz => 'Baz in :de-DE')
     store_translations(:'pt-BR', :baz => 'Baz in :pt-BR')
@@ -28,6 +28,10 @@ def setup
     assert_equal 'Bar in :de', I18n.t(:bar, :locale => :'de-DE')
   end
 
+  test "keeps the count option when defaulting to a different key" do
+    assert_equal 'Interpolate 5 10', I18n.t(:non_existant, default: :interpolate_count, count: 10, value: 5)
+  end
+
   test "returns the :de translation for a missing :'de-DE' when :default is a String" do
     assert_equal 'Bar in :de', I18n.t(:bar, :locale => :'de-DE', :default => "Default Bar")
     assert_equal "Default Bar", I18n.t(:missing_bar, :locale => :'de-DE', :default => "Default Bar")