File CVE-2015-7579.patch of Package rubygem-rails-html-sanitizer.1908

diff --git a/lib/rails/html/sanitizer.rb b/lib/rails/html/sanitizer.rb
index f40bf6b..68ae6d2 100644
--- a/lib/rails/html/sanitizer.rb
+++ b/lib/rails/html/sanitizer.rb
@@ -13,6 +13,10 @@ module Rails
         node.xpath(*xpaths).remove
         node
       end
+
+      def properly_encode(fragment, options)
+        fragment.xml? ? fragment.to_xml(options) : fragment.to_html(options)
+      end
     end
 
     # === Rails::Html::FullSanitizer
@@ -26,9 +30,12 @@ module Rails
         return unless html
         return html if html.empty?
 
-        Loofah.fragment(html).tap do |fragment|
-          remove_xpaths(fragment, XPATHS_TO_REMOVE)
-        end.text(options)
+        loofah_fragment = Loofah.fragment(html)
+
+        remove_xpaths(loofah_fragment, XPATHS_TO_REMOVE)
+        loofah_fragment.scrub!(TextOnlyScrubber.new)
+
+        properly_encode(loofah_fragment, encoding: 'UTF-8')
       end
     end
 
@@ -140,10 +147,6 @@ module Rails
       def allowed_attributes(options)
         options[:attributes] || self.class.allowed_attributes
       end
-
-      def properly_encode(fragment, options)
-        fragment.xml? ? fragment.to_xml(options) : fragment.to_html(options)
-      end
     end
   end
 end
diff --git a/lib/rails/html/scrubbers.rb b/lib/rails/html/scrubbers.rb
index 7cc5591..401eab9 100644
--- a/lib/rails/html/scrubbers.rb
+++ b/lib/rails/html/scrubbers.rb
@@ -169,5 +169,25 @@ module Rails
         @attributes.include?(name)
       end
     end
+
+    # === Rails::Html::TextOnlyScrubber
+    #
+    # Rails::Html::TextOnlyScrubber allows you to permit text nodes.
+    #
+    # Unallowed elements will be stripped, i.e. element is removed but its subtree kept.
+    class TextOnlyScrubber < Loofah::Scrubber
+      def initialize
+        @direction = :bottom_up
+      end
+
+      def scrub(node)
+        if node.text?
+          CONTINUE
+        else
+          node.before node.children
+          node.remove
+        end
+      end
+    end
   end
 end