// Update anchor tags to appropriate URL's
   preg_match_all('/\<a[^>]+[\'"]((http|https):\/\/[\/-\w\.#?=&;]+)[^>]+>/im', $buffer, $matches);

   $home_path= parse_url(get_option('home'), PHP_URL_PATH) or $home_path= '/';
   $home_len= strlen($home_path);

   for ($i = 0; $i<sizeof($matches[0]); $i++) { // fix
    $html     = $matches[0][$i];
    $url      = $matches[1][$i];
    $scheme   = $matches[2][$i];

/////////////////////////////////////////////////
// this is all borked
/////////////////////////////////////////////////
//     $url_path = parse_url($url, PHP_URL_PATH);
//     if ($this->shared_ssl) {
//      $url_path = str_replace(parse_url($this->https_url, PHP_URL_PATH), '', $url_path); // wrong, https_url already stripped of path
//     } else {
//      $url_path = str_replace(parse_url(get_option('home'), PHP_URL_PATH), '', $url_path);
//     }
// 
//     if ($url_path == '/') {  // wrong, external links can match this
//      $post = get_option('page_on_front');
//     } else {
//      $post = get_page_by_path($url_path); // wrong unless WP installed in root www
//      $post = $post->ID;
//     }
/////////////////////////////////////////////////

    $scheme= strtolower($scheme);
    $url_start= $scheme . '://' . strtolower(parse_url($url, PHP_URL_HOST));

    if ($url_start == $this->http_url) {
      // ok
    } elseif ($url_start == $this->https_url) {
      // ok
    } else {
      continue; // bail on external links
    }

    $url_path= parse_url($url, PHP_URL_PATH) or $url_path='/';

    if ($home_len <= strlen($url_path) && $home_path == substr($url_path, 0, $home_len)) {
     $url_path= substr($url_path, $home_len);
    } else {
     continue;
    }

    if ($url_path == '') {
     $post = get_option('page_on_front');
    } else {
     $post = get_page_by_path($url_path);
     $post and $post = $post->ID;
    }

    $force_ssl_admin= defined('FORCE_SSL_ADMIN') && FORCE_SSL_ADMIN && is_admin(); // new code

    if ($post) {
     // $force_ssl = get_post_meta($post, 'force_ssl', true); // was
     $force_ssl= $force_ssl_admin || get_post_meta($post, 'force_ssl', true); // now
     if ($force_ssl) {
      if ($scheme=='http') {
       $buffer = str_replace($html, str_replace($this->http_url, $this->https_url, $html), $buffer);
      }
     } else if (get_option('wordpress-https_exclusive_https') == 1) {
      if ($scheme=='https') {
       $buffer = str_replace($html, str_replace($this->https_url, $this->http_url, $html), $buffer);
      }
     }
    }
   }