A simple tool to indent OCaml programs

Ocp-indent is based on an approximate, tolerant OCaml parser and a simple stack machine ; this is much faster and more reliable than using regexps. Presets and configuration options available, with the possibility to set them project-wide. Supports most common syntax extensions, and extensible for others.


  • An indentor program, callable from the command-line or from within editors
  • Bindings for popular editors
  • A library that can be directly used by editor writers, or just for approximate parsing.