acts_as_comparable 1.2 has been released. It includes a bug fix for passing in custom options to the declarative acts_as_comparable call.
What is acts_as_comparable? acts_as_comparable is plugin for ActiveRecord which allows you to easily compare and determine the differences between two ActiveRecord model
For more information see: http://www.continuousthinking.com/2007/6/30/acts_as_comparable-1-2-released
To install as a plugin: script/plugin install http://rails.lotswholetime.com/svn/acts_as_comparable/tags/acts_as_comparable-1.2
To install as a gem: gem install -r acts_as_comparable
Enjoy!
Zach