ssion is encountered.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    save_subexpression_location
                  </p>
                </td>
<td>
                  <p>
                    No
                  </p>
                </td>
<td>
                  <p>
                    When set then the locations of individual sub-expressions within
                    the <span class="emphasis"><em>original regular expression string</em></span> can
     