A screenwriting editor — Fountain format, written in Zig with an immediate-mode GUI and Scheme scripting.

Status: in development, but usable for real work — it edits, paginates and prints screenplays, reads and writes Final Draft .fdx, and ships as a macOS app that updates itself. Releases.

Install

zig build install-user -Doptimize=ReleaseFast   # -> ~/Applications/Reveal.app

Or download a release. Updates are verified against a minisign signature and a pinned sha256 before anything is replaced.

Build

zig build                                  # -> zig-out/bin/reveal
zig build run
zig build install test                     # build the exe AND run the tests
zig build bundle -Doptimize=ReleaseFast    # -> zig-out/Reveal.app

Zig 0.16.0. Dependencies are sibling checkouts on dev, pinned url + hash on main — see DESIGN.md "Branches".

Stack

Concern	Library
Window + event loop	dvui-sokol
Immediate-mode GUI	dvui (our fork)
Document / text model	storykit
Fountain parse / serialize	zfountain
Final Draft .fdx	zfdx
PDF export	platen
Scripting + integration tests	zscheme

The core is a bidirectional bridge between zfountain.Document and storykit.Document: zfountain owns screenplay semantics, storykit owns the editable text model, so structure survives editing instead of being re-inferred on every keystroke. Everything that can be is a pure library module — pagination, PDF layout, file detection, update verification — unit-testable without a window.

DESIGN.md has the full design; RELEASING.md how a release is cut.

Examples

examples/ carries public-domain Fountain screenplays with reference PDFs: Big Fish (also .fdx), Brick & Steel, The Last Birthday Card.

Fonts

src/fonts/ bundles Courier Prime (the page and every PDF), Courier Prime Sans (alternative page face), Inter (UI chrome) and Noto Emoji (glyph fallback) — all OFL 1.1, each with its licence, all @embedFiled. Nothing to install, and PDF export needs no system fonts.

License

MIT — see LICENSE.