;&nbsp;&nbsp;&nbsp;<span class="keyword">mutable</span>&nbsp;c_vquit&nbsp;:&nbsp;char;<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">mutable</span>&nbsp;c_verase&nbsp;:&nbsp;char;<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">mutable</span>&nbsp;c_vkill&nbsp;:&nbsp;char;<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">mutable</span>&nbsp;c_veof&nbsp;:&nbsp;char;<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">mutable</span>&nbsp;c_veol&nbsp;:&nbsp;char;<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="k