Tagaholic - Hirb - Irb On The Good Stuff
http://tagaholic.me/2009/03/13/hirb-irb-on-the-good-stuff.html

Hirb::View.formatter_config

Irb is a great place for interacting with Ruby. Unfortunately, even with the colorful help of wirble, it's not so great for visualizing the output of those interactions. Hirb aims to change that.

View mini framework for irb.