Yi
The Haskell-Scriptable Editor
Yi is a flexible and extensible text editor written and configured entirely in Haskell. Designed for power users and Haskell developers, Yi provides Vim and Emacs-style keybindings and is customizable via Haskell code, not configuration files. It supports syntax highlighting, multiple editing modes, and efficient performance through a layered architecture. Yi showcases how editor components can be composed as reusable libraries within Haskell.