gem 'htmldiff', github: 'karnov/htmldiff'
class Stuff
class << self
include HTMLDiff
end
# or extend HTMLDiff ?
end
Stuff.diff('a word is here', 'a nother word is there')
# => 'a<ins class=\"diffins\"> nother</ins> word is <del class=\"diffmod\">here</del><ins class=\"diffmod\">there</ins>'
Checkout the crappy specs for good examples.