showdownjs/test/features/excludeTrailingPunctuationFromURLs-option.html

<p>url <a href="http://www.google.com">http://www.google.com</a>.</p>
<p>url <a href="http://www.google.com">http://www.google.com</a>!</p>
<p>url <a href="http://www.google.com">http://www.google.com</a>? foo</p>
<p>url (<a href="http://www.google.com">http://www.google.com</a>) bazinga</p>
<p>url [<a href="http://www.google.com">http://www.google.com</a>] bazinga</p>
<p>url <a href="http://www.google.com">http://www.google.com</a>, bar</p>