嗯。。。奇怪的我查看了文件“wp includes/formatting”。php\'在函数wp\\u richedit\\u pre上：

function wp_richedit_pre($text) {
      // Filtering a blank results in an annoying <br />\\n
      if ( empty($text) ) return apply_filters(\'richedit_pre\', \'\');

      $output = convert_chars($text);
      $output = wpautop($output);
      $output = htmlspecialchars($output, ENT_NOQUOTES);

      return apply_filters(\'richedit_pre\', $output);
}

http://i.stack.imgur.com/Jiuiy.png