lib/sinatra/content_for.rb in sinatra-contrib-3.0.1 vs lib/sinatra/content_for.rb in sinatra-contrib-3.0.2

@@ -173,10 +173,10 @@
     #
     # Would pass <tt>1</tt> and <tt>2</tt> to all the blocks registered
     # for <tt>:head</tt>.
     def yield_content(key, *args, &block)
       if block_given? && !content_for?(key)
-        haml? && Tilt[:haml] == Tilt::HamlTemplate ? capture_haml(*args, &block) : yield(*args)
+        haml? && Tilt[:haml] == Tilt::HamlTemplate && respond_to?(:capture_haml) ? capture_haml(*args, &block) : yield(*args)
       else
         content = content_blocks[key.to_sym].map { |b| capture(*args, &b) }
         content.join.tap do |c|
           if block_given? && (erb? || erubi?)
             @_out_buf << c