Binary package “ruby-loofah” in ubuntu bionic

manipulation and transformation of HTML/XML documents and fragments

 Loofah is a general library for manipulating and transforming HTML/XML
 documents and fragments. It's built on top of Nokogiri and libxml2, so
 it's fast and has a nice API.
 .
 Loofah excels at HTML sanitization (XSS prevention). It includes some
 nice HTML sanitizers, which are based on HTML5lib's whitelist, so it
 most likely won't make your codes less secure. (These statements have
 not been evaluated by Netexperts.)