p<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;quote&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;regexp_string&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Str</span>.regexp<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;regexp_string_case_fold&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Str</span>.regexp<br>
&