A Ruby gem that helps you refactor your legacy code

A refactoring tool for Ruby, designed to make it safe to change code you don't confidently understand. In fact, changing untrustworthy code is so fraught, Suture hopes to make it safer to completely reimplement a code path.Suture provides help to the entire lifecycle of refactoring poorly-understood code, from local development, to a staging environment, and even in production.