class Middleman::Renderers::Sass::SassPlusCSSFilenameTemplate

def evaluate(scope, locals, &block)
  @engine = ::Sass::Engine.new(data, sass_options_with_scope(scope.class))
    
  begin
    super
  rescue Sass::SyntaxError => e
    Sass::SyntaxError.exception_to_css(e, :full_exception => true)
  end
end

def sass_options_with_scope(scope)
  return sass_options if basename.nil?

  location_of_sass_file = if scope.build?
    File.join(scope.root, scope.build_dir)
  else
    scope.views
  end

  parts = basename.split('.')
  parts.pop
  css_filename = File.join(location_of_sass_file, scope.css_dir, parts.join("."))
  sass_options.merge(scope.settings.sass).merge(:css_filename => css_filename)
end