Recently I ran into a situation where I had to let custom URI like this to
<a href="ASSIGNMENT::222::HREF" title="authored_link_title">authored_link_text</a> to pass via HTMLPurifier. However, HtmlPurifier is deep inside Yii and I do not want to change framework code. So, is there anyway I can add Custom URI scheme like this one mentioned in the site http://stackoverflow.com/questions/10458783/how-to-configure-html-purifier-to-allow-callto123-in-an-anchor-href-value. or is there any other way to get around this problem. Can anyone please give me any insight into this problem.