always call html_safe on will_paginate result

This ensures that the HTML output of `will_paginate` view helper is not
only marked safe in Rails, but in Padrino as well.

lib/will_paginate/view_helpers.rb

@@ -91,7 +91,9 @@ def will_paginate(collection, options = {})
       end
       # render HTML for pagination
       renderer.prepare collection, options, self
-      renderer.to_html
+      output = renderer.to_html
+      output = output.html_safe if output.respond_to?(:html_safe)
+      output
     end
 
     # Renders a message containing number of displayed vs. total entries.

lib/will_paginate/view_helpers/action_view.rb

@@ -30,7 +30,7 @@ def will_paginate(collection = nil, options = {}) #:nodoc:
       options = options.symbolize_keys
       options[:renderer] ||= LinkRenderer
 
-      super(collection, options).try(:html_safe)
+      super(collection, options)
     end
 
     def page_entries_info(collection = nil, options = {}) #:nodoc:

spec/view_helpers/base_spec.rb

@@ -32,6 +32,18 @@
       collection = mock 'Collection', :total_pages => 1
       will_paginate(collection).should be_nil
     end
+
+    it "should call html_safe on result" do
+      collection = WillPaginate::Collection.new(1, 2, 4)
+
+      html = mock 'HTML'
+      html.expects(:html_safe).returns(html)
+      renderer = mock 'Renderer'
+      renderer.stubs(:prepare)
+      renderer.expects(:to_html).returns(html)
+
+      will_paginate(collection, :renderer => renderer).should eql(html)
+    end
   end
 
   describe "pagination_options" do