[Sass] Recursively set options on Sass::Tree.

lib/sass/engine.rb

@@ -122,6 +122,7 @@ module Sass
     def render_to_tree
       root = Tree::Node.new(@options)
       append_children(root, tree(tabulate(@template)).first, true)
+      root.options = @options
       root
     end
 

lib/sass/tree/comment_node.rb

@@ -9,6 +9,10 @@ module Sass::Tree
       super(options)
     end
 
+    def options=(options)
+      @options = options
+    end
+
     def ==(other)
       self.value == other.value && super
     end

lib/sass/tree/if_node.rb

@@ -15,6 +15,11 @@ module Sass::Tree
       @last_else = node
     end
 
+    def options=(options)
+      super
+      self.else.options = options if self.else
+    end
+
     protected
 
     def _perform(environment)

lib/sass/tree/node.rb

@@ -4,7 +4,7 @@ module Sass
       attr_accessor :children
       attr_accessor :line
       attr_accessor :filename
-      attr_reader :style
+      attr_reader :options
 
       def initialize(options)
         @options = options
@@ -12,6 +12,11 @@ module Sass
         @children = []
       end
 
+      def options=(options)
+        children.each {|c| c.options = options}
+        @options = options
+      end
+
       def <<(child)
         if msg = invalid_child?(child)
           raise Sass::SyntaxError.new(msg, child.line)
@@ -49,6 +54,10 @@ module Sass
         raise e
       end
 
+      def style
+        @options[:style]
+      end
+
       protected
 
       def _perform(environment)