 to <code>true</code> then this update
will ignore buffering and immediately trigger
a new undo state regardless of current buffering.</li>
</ul>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">update: </span><span class="nf">(state, options = {})-&gt;</span>
    <span class="k">return</span> <span class="kc">false</span> <span class="k">if</span> <span class="nx">@options</span><span class="p">.</span><span class="nx">comparator</span><span class