class Sass::Tree::Visitors::Convert

def visit_rule(node)
  if @format == :sass
    name = selector_to_sass(node.rule)
    name = "\\" + name if name[0] == ?:
    name.gsub(/^/, tab_str) + yield
  elsif @format == :scss
    name = selector_to_scss(node.rule)
    res = name + yield
    if node.children.last.is_a?(Sass::Tree::CommentNode) && node.children.last.type == :silent
      res.slice!(-3..-1)
      res << "\n" << tab_str << "}\n"
    end
    res
  end
end