如何在Ruby中编码解码HTML实体？

HTMLEntities可以做到：

: jmglov@laurana; sudo gem install htmlentitiesSuccessfully installed htmlentities-4.2.4: jmglov@laurana;  irbirb(main):001:0> require 'htmlentities'=> []irb(main):002:0> HTMLEntities.new.depre "¡I'm highly annoyed with character references!"=> "¡I'm highly annoyed with character references!"