ddidderr
325288b7ee
Intentional deviation from Ghostty 1.3.1 (DEVIANT_FIXES.md entry 10). Two terminal inputs reach states that Zig handles only by assertion (Debug/ReleaseSafe abort; ReleaseFast continues): - Toggling mode 2027 around a BOM before a wide character hits `assert(!b)` in print_grapheme. This repository's release profile keeps debug assertions, so terminal output could crash a release build. The assertion is removed and the path behaves like Zig ReleaseFast. - A grapheme (e.g. a Devanagari conjunct) at the right margin on the bottom row with scrolling margins returned InvalidCoordinate and left a grapheme flag without data, panicking later in the formatter. The grapheme now moves from the cell that actually holds it and no cell is flagged without data. tools/difftest gains a Rust-only panic hunt (`difftest_fuzz panics`, lenient driver): ~60k debug-build cases now run without any panic, and 3000 Zig differential cases show 0 divergences. Test Plan: - cargo test -p ghostty-terminal difftest_mode_2027_toggle_with_bom_does_not_panic difftest_grapheme_wrap_scrolling_margins_keeps_grapheme - cargo run -p difftest --bin difftest_fuzz -- panics
ghostty-rs
A Rust rewrite of the Ghostty 1.3.1 terminal emulator for Linux (GTK4 + libadwaita, OpenGL).
It aims for behavioural parity with Ghostty: the same configuration file
format, options, defaults and documentation; the same keybindings and
actions; the same ghostty +action CLI; the same terminal emulation
(including kitty keyboard/graphics protocols, OSC 8 hyperlinks, semantic
prompts, synchronized output, tmux control mode); the same shell
integration, themes and terminfo.
Out of scope: macOS, Windows, WASM, the embedded libghostty C API, and
Sentry crash reporting (disabled by default on Linux upstream).
Building and running
Requirements: Rust (edition 2024), GTK ≥ 4.14, libadwaita ≥ 1.5,
fontconfig, freetype, harfbuzz, Oniguruma, libepoxy, blueprint-compiler
and glib-compile-resources at build time.
cargo run # open a terminal window running your shell
cargo run -- -e htop # run a command
cargo run -- +list-themes # CLI actions work like Ghostty's
cargo run --profile production # optimized build (LTO, no debug assertions)
Development builds find resources/ (shell integration, themes, terminfo)
automatically. Your existing Ghostty config
(~/.config/ghostty/config[.ghostty]) is used as-is.
Installing
just install /usr/local # binary, share/ghostty, terminfo, desktop files,
# completions, man pages, translations, icons
just install /usr false true # system-package layout (lib/systemd/user)
Testing
just test # cargo test --workspace (~3000 tests)
just clippy # clippy with -D warnings
Every Zig test block of the ported files was ported to a Rust test.
crates/ghostty-core/tests holds end-to-end tests that drive the real core,
terminal and a real pty through a fake app runtime. ghostty-bench mirrors
Ghostty's benchmark tool; terminal stream throughput is on par with the Zig
build (see docs/rewrite/notes/perf-P1.md).
Documentation
docs/rewrite/ARCHITECTURE.md– top-down decomposition, crate map, key design decisions, intentional omissionsdocs/rewrite/STATUS.md– work package historydocs/rewrite/notes/– per-crate porting notes, deviations from Zig, audits and verification reports
License
MIT, like Ghostty. Bundled fonts and themes carry their own licenses (see
crates/ghostty-font/res/ and resources/themes/).