n-number">1</span> <span class="mdzsyn-string">""</span>) <span class="mdzsyn-comment"># -&gt; nil</span>
(<span class="mdzsyn-coresym">peg/match</span> '(<span class="mdzsyn-coresym">range</span> <span class="mdzsyn-string">"AZ"</span>) <span class="mdzsyn-string">"F"</span>) <span class="mdzsyn-comment"># -&gt; @[]</span>
(<span class="mdzsyn-coresym">peg/match</span> '(<span class="mdzsyn-coresym">range</span> <span class="mdzsyn-string">"AZ"</span>) <span class="mdzsyn-string">"-"</span>) <span class="m