Don't html-escape the :count option to translate if it's a Numeric. Fixes #3685.

actionpack/CHANGELOG.md

@@ -62,6 +62,13 @@
     persistent between requests so if you need to manipulate the environment
     for your test you need to do it before the cookie jar is created.
 
+## Rails 3.1.3 (unreleased) ##
+
+*   Fix using `tranlate` helper with a html translation which uses the `:count` option for
+    pluralization.
+
+    *Jon Leighton*
+
 ## Rails 3.1.2 (unreleased) ##
 
 *   Fix XSS security vulnerability in the `translate` helper method. When using interpolation

actionpack/lib/action_view/helpers/translation_helper.rb

@@ -48,7 +48,9 @@ module ActionView
         if html_safe_translation_key?(key)
           html_safe_options = options.dup
           options.except(*I18n::RESERVED_KEYS).each do |name, value|
-            html_safe_options[name] = ERB::Util.html_escape(value.to_s)
+            unless name == :count && value.is_a?(Numeric)
+              html_safe_options[name] = ERB::Util.html_escape(value.to_s)
+            end
           end
           translation = I18n.translate(scope_key_by_partial(key), html_safe_options)
 

actionpack/test/template/translation_helper_test.rb

@@ -19,7 +19,11 @@ class TranslationHelperTest < ActiveSupport::TestCase
         :hello_html => '<a>Hello World</a>',
         :interpolated_html => '<a>Hello %{word}</a>',
         :array_html => %w(foo bar),
-        :array => %w(foo bar)
+        :array => %w(foo bar),
+        :count_html => {
+          :one   => '<a>One %{count}</a>',
+          :other => '<a>Other %{count}</a>'
+        }
       }
     )
     @view = ::ActionView::Base.new(ActionController::Base.view_paths, {})
@@ -89,6 +93,12 @@ class TranslationHelperTest < ActiveSupport::TestCase
     assert_equal '<a>Hello &lt;World&gt;</a>', translate(:'translations.interpolated_html', :word => stub(:to_s => "<World>"))
   end
 
+  def test_translate_with_html_count
+    assert_equal '<a>One 1</a>', translate(:'translations.count_html', :count => 1)
+    assert_equal '<a>Other 2</a>', translate(:'translations.count_html', :count => 2)
+    assert_equal '<a>Other &lt;One&gt;</a>', translate(:'translations.count_html', :count => '<One>')
+  end
+
   def test_translation_returning_an_array_ignores_html_suffix
     assert_equal ["foo", "bar"], translate(:'translations.array_html')
   end