# File lib/asciidoctor/path_resolver.rb, line 144
    def is_root? path
      (path.start_with? SLASH) ||
          (::JAVASCRIPT_IO_MODULE == 'xmlhttprequest' && (path.start_with? 'file://')) ||
          (@file_separator == BACKSLASH && (WindowsRootRx.match? path))
    end