="listitem">
            The <code class="computeroutput"><span class="identifier">char_</span><span class="special">()</span></code>
            and <code class="computeroutput"><span class="identifier">string</span><span class="special">()</span></code>
            placeholders can now be used for token definitions and are synonymous
            with <code class="computeroutput"><span class="identifier">token_def</span></code>.
          </li>
<li class="listitem">
            Lexer semantic actions now h