From T115072#1717106:
The following seems broken in that same function.
// Try to re-parse the attributish text content var attributishPrefix = attributishContent.txt.match(/^[^|]+\|/)[0];
It sees
<ref>Nick Harris: [http://www.dailymail.co.uk/sport/othersports/article-2323161/Paul-Edwards-takes-UK-Athletics-UK-Sport-Kings-College-London-court-drug-tests.html London's Olympic drugbusters 'misled me for years over the test that got me banned for life'], Daily Mail, 11 May 2013</ref><ref>{{Cite news|url=http://query.nytimes.com/gst/fullpage.html?sec=health&res=9804E1DE113FF93AA15753C1A962958260|work=The New York Times|title=SPORTS PEOPLE: TRACK AND FIELD; Shot-Putter Is Banned|date=1994-10-29|accessdate=2010-05-08}}</ref><ref>UK Anti-doping: [http://www.ukad.org.uk/anti-doping-rule-violations/current-violations/search/P40 Current sanctions]</ref>and blindly looks for a pipe char. That is a broken test as in this case where the pipe char is found within extension content. So, that needs a smarter test than a blind regexp.