caretline 0.2.0

A replayable, drivable text-editing engine: Helix's editing model in a pure Elm architecture. The whole editor is one serializable state; every input is a message.
Documentation

caretline

A standalone text-editing engine: Helix's editing model (rope, multi-range selections, transactions, undo history, grapheme-correct motion, soft wrap) inside a strict Elm architecture. State serializes to JSON and back without loss, update(&mut State, Msg) -> Vec<Effect> is pure and deterministic, and view(&State) -> Frame is a pure cell grid. No terminal I/O and no ratatui.

Session wraps a state with a revision counter and the trace of everything applied, and answers the state protocol in process (Session::handle).

The terminal front end is caretline-app.

Documentation

The full documentation is in docs/caretline:

Page Covers
Overview What it is, what it covers, the layers
Architecture State, Msg, update, Effect, view; purity, revisions, replay; Helix inside
Rust API The public API by task, with a complete example (examples/basic.rs)
Messages Every message, effect and key binding; the key-script syntax
CLI The caretline command, end to end
Protocol The JSON-lines state protocol
Embedding Use it in your own app, as a library or a process; licensing
Testing Goldens, replay, the fuzzer, fixtures, tests from traces 
cargo run -p caretline-next --example basic

License

MIT, except src/helix/, which is vendored from Helix and stays under the Mozilla Public License 2.0 (file-level; see src/helix/README.md and src/helix/LICENSE-MPL-2.0).