Wirble is a set of enhancements for Irb. Wirble enables several items mentioned on the RubyGarden "Irb Tips and Tricks" page, including tab-completion, history, and a built-in ri command, as well as colorized results and a couple other goodies. The idea, of course, is to fill Irb with useful features without turning your ~/.irbrc file into swiss cheese. Using Wirble is simple, too. Here's what a