Advent of Prism: Part 0 - Introduction Nov 30, 2023 Two and a half years ago, I began working on what is today known as the prism Ruby parser. This is a new Ruby parser that is now being integrated into runtimes and tooling alike. This includes CRuby, JRuby, TruffleRuby, Natalie, Syntax Tree, RuboCop, and many others. Over that time period, I’ve learned just about everything there is to know about