       otherwise. Generally, any implementation of <code class="computeroutput"><span class="identifier">is_char</span></code>
                      needs to behave as if if was a <a href="../../../../../../../../libs/mpl/doc/refmanual/integral-constant.html" target="_top">MPL
                      Boolean Constant</a>.
                    </p>
                  </td>
</tr></tbody>
</table></div>
<h6>
<a name="spirit.advanced.customize.string_traits.is_char.h6"></a>
            <span class="phrase"><a name=