<div dir="ltr">Thanks Tobias & Eli<div><br></div><div>I've updated my submission to use <span style="font-size:13px;font-family:arial,sans-serif">(regexp-match? sub-str str).</span></div><div><br>
</div><div>[Also added the stretch goal solution, but could do with some refactoring to reduce the joint line-count.]</div><div>
<br></div><div>-- Dan</div></div>