Escaped config strings (ghostty_os::osbytes) kept reaching OS boundaries undecoded, and decoding was occasionally applied to plain text. The root cause was that both were plain `String`s. Now: - `EncodedOs` is a newtype (no Display/AsRef<Path>) that decodes only via to_os/to_path/to_bytes/to_wide; plain text enters via from_plain_text. OS helpers (env, home, xdg, passwd, resources dir, path expansion), config::Path, WorkingDirectory, theme/file_load/edit paths, terminal pwd, OpenUrl/Pwd actions and termio cwd use it, so the compiler forces decoding at every boundary. os::open takes &OsStr. Config output is unchanged. Fixes all rows of docs/rewrite/notes/review-rv5-codex.md (final-Z7.md): screen-file copy; regex/OSC 8 URLs no longer decoded (regression); lossless Windows WTF-8/WTF-16 for args, env and CreateProcessW; Windows resources dir/TERMINFO; color OSC request lists and X11 color lookup no longer allocate globally (C zero-allocation test extended); macOS Mach handler resumes all threads before KERN_FAILURE (hang regression) and SIGABRT minidumps go through the exception thread; plus open-config, background images, crash dir, ssh cache, exe dir/PATH, fontconfig filenames, file links, kitty TMPDIR, .hushlogin and benchmark paths. The typing also surfaced and fixed gtk-custom-css, bell audio, bash HISTFILE, OSC 52 writes and the C config getters. Test Plan: - cargo test --workspace (3376 passed) - just check-macos (both), just check-windows, just check-wasm - diff <(ghostty-rs +show-config --default --docs) \ <(ghostty +show-config --default --docs)
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/).