mod_default_bookmarks: Abort on incompatible mod_bookmarks The module formerly known as mod_bookmarks exposed this publish_to_pep function, while the new mod_bookmarks2 (called mod_bookmarks in trunk) does not.

<tr>
  <th>What is {x} {op} {y}?</th><td>
    <input name="captcha_challenge" type="hidden" value="{challenge}">
    <input name="captcha_reply" pattern="[0-9]+" required type="number">
  </td></tr>