class Sass::Importers::Filesystem

def _find(dir, name, options)
  full_filename, syntax = Sass::Util.destructure(find_real_file(dir, name, options))
  return unless full_filename && File.file?(full_filename) && File.readable?(full_filename)
  # TODO: this preserves historical behavior, but it's possible
  # :filename should be either normalized to the native format
  # or consistently URI-format.
  full_filename = full_filename.tr("\\", "/") if Sass::Util.windows?
  options[:syntax] = syntax
  options[:filename] = full_filename
  options[:importer] = self
  Sass::Engine.new(File.read(full_filename), options)
end