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l0ng-ai
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The GUI-launch locale fallback exported a literal `LC_CTYPE=UTF-8`. That name is a BSD libc alias with no glibc equivalent, and the stock `ssh_config` ships `SendEnv LANG LC_*`, so it rode along to every host we ssh into. There `LC_CTYPE` outranks the `LANG` the host sets for itself and then fails to load, dropping the remote shell to the C locale -- re-creating the mangled non-ASCII output the fallback exists to prevent. Derive the locale from the system locale instead, the way Terminal.app and iTerm2 do: reduce the CFLocale identifier to its POSIX `lang_REGION` stem, and fall back to `C.UTF-8` then `en_US.UTF-8`. Every candidate is checked against `/usr/share/locale` before it is exported, so tty7 never hands a shell a name the C library cannot load -- including on machines whose region combination has no installed locale (`en_CN` is an ordinary macOS setting that resolves to no locale at all). Still `LC_CTYPE` only, and still only when no locale is inherited or configured, so message/date/number localization and explicit user overrides are untouched. Fixes #178
tty7
A terminal workbench: shells, sessions, SSH, coding agents.
Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty
English · 简体中文
Why
- Fast — ~2× the throughput of Alacritty, Ghostty, or Kitty (benchmarks)
- Sessions persist — quit or reboot; your shells keep running, no tmux
- Editor-grade input — completion, syntax highlighting, history search built in; zero config for zsh, bash, fish, PowerShell
- Agent-aware — recognizes Claude Code & co. in a pane: status, notifications, session resume
Install
Native builds for each platform on Releases:
| macOS | …-macos-arm64.dmg · …-x86_64.dmg |
drag into Applications |
| Windows | …-setup.exe · portable ….zip |
|
| Linux | …-x86_64.AppImage |
chmod +x and run — x11/wayland libs bundled |
What's inside
| Input | ghost suggestions from history · explained tab completion · syntax highlighting · multi-line editing · click places the caret · ⌃ R fuzzy history |
| Window | tabs & splits · ⌘ P palette · ⌘ F scrollback search · eight themes · IME |
| Coding agents | per-pane agent detection (~17 CLIs): status dot, notifications, branch + diff, resume after reboot, tray icon that signals "needs your input" |
| SSH | native russh stack: profiles with keychain secrets, SFTP panel, port forwarding, jump hosts |
Details for every row: docs/features.md. Keybindings: ⌘ , opens Settings — browse and remap everything, tmux preset included (full list).
Benchmarks
Same machine, same day, same 155×40 grid — Apple M1 Pro, macOS 26.3.1, five-run averages (2026-07-04):
| tty7 | Alacritty | Ghostty | Kitty | |
|---|---|---|---|---|
Plaintext IO — 11 MB cat (lower = better) |
95 ms | 239 ms | 179 ms | 185 ms |
| DOOM-fire frame rate (higher = better) | 888 fps | 485 fps | 552 fps | 617 fps |
| Cold-launch memory | 116 MB¹ | 105 MB | 128 MB | 130 MB |
¹ GUI 105 MB + the persistent daemon 11 MB.
Methodology and one-command reproduction: scripts/bench/.
Built on gpui and alacritty_terminal · Apache-2.0 · Discord · Changelog