er">sp</span><span class="special">,</span>
    <span class="identifier">parse_options</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">opt</span><span class="special">,</span>
    <span class="keyword">unsigned</span> <span class="keyword">char</span><span class="special">*</span> <span class="identifier">buffer</span><span class="special">,</span>
    <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span>