lib/sass/css.rb in haml-2.0.8 vs lib/sass/css.rb in haml-2.0.9

@@ -309,11 +309,11 @@
     #       color: blue
     #
     def remove_parent_refs(root)
       root.children.each do |child|
         if child.is_a?(Tree::RuleNode)
-          child.rule.gsub! /^& /, ''
+          child.rule.gsub! /^& +/, ''
           remove_parent_refs child
         end
       end
     end
 
@@ -375,10 +375,10 @@
     #       color: blue
     #
     def fold_commas(root)
       prev_rule = nil
       root.children.map! do |child|
-        next child unless Tree::RuleNode === child
+        next child unless child.is_a?(Tree::RuleNode)
 
         if prev_rule && prev_rule.children == child.children
           prev_rule.rule << ", #{child.rule}"
           next nil
         end