s="keyword">bool</span> <span class="identifier">input_at_eof</span><span class="special">(</span><span class="identifier">MultiPass</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">mp</span><span class="special">);</span>

        <span class="comment">// input_is_valid is called to verify if the parameter t represents </span>
        <span class="comment">// a valid input character/token</span>
        <span class="comment">//</span>
        <span class=