rs, </span>
            <span class="comment">// see if we've reached the end of file on the istream</span>
            <span class="keyword">if</span><span class="special">(!</span> <span class="identifier">is</span><span class="special">.</span><span class="identifier">eof</span><span class="special">())</span>
            <span class="special">{</span>
                <span class="comment">// Get a mutable buffer sequence for writing</span>
                <span class="keyword">auto</span> <span class="k