var tagName  = config.tagName,
attrName = config.attrName;

matches.forEach(function(m)
{
var entity = m[0][0],
chr    = html_entity_decode(entity);

if (chr === entity || chr.charCodeAt(0) < 32)
{
// If the entity was not decoded, we assume it's not valid and we ignore it.
// Same thing if it's a control character
return;
}

addSelfClosingTag(tagName, m[0][1], entity.length).setAttribute(attrName, chr);
});