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l0ng-ai
aeef80d25a
Second pass over what #268 stripped, this time reading each comment as
a claim to check rather than prose to paste back. All eight hold, so
this is documentation only — but they were worth checking, and two of
them are the kind that gets "simplified" by someone who cannot see why:
- `OutputGate::queued` is `AtomicI64` because add runs per PTY read at
~100k/s and sub per socket write, so neither may take a lock; signed
so a decrement racing a reset drifts negative instead of underflowing.
- `wait_below_high_water` returns before touching the mutex when the
backlog is under the mark, which is the common path.
- `MAX_RING_SEGMENTS` bounds a leak: drag-resize cuts a segment per
column, none of them filling `RING_CAP`, so attach would degrade
linearly over a pane's life. Past the cap the two oldest merge.
- `CAPABILITY_ENV` keeps `TERM`/`COLORTERM` out of reach of the user's
env map — a fact about what the far end decodes, not a preference.
- `ForegroundProbes::agent` and `::cwd` distinguish "no reading" from
"nothing there"; the caller applies the outer Option, never flattens
it, so a backend with no process-table view cannot wipe an agent
identified by sentinel events.
- The spawn path avoids appending argv to `new_default_prog()`, which
portable-pty panics on by design.
Also fix an unresolved `[`ForwardEntry`]` link I added in 61002ec. It
only fails under `--document-private-items`; plain `cargo doc --no-deps`
never resolves private-item links, so it is the wrong gate for this
tree and I have moved to the stricter one.
tty7
A terminal workbench: persistent sessions, remote work, agents.
Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty
English · 简体中文
Why
- Performance — ~2× the throughput of Alacritty, Ghostty, or Kitty (benchmarks)
- Persistent sessions — quit or reboot; your shells and supported agent sessions keep running, no tmux
- Editor-grade input — suggestions, completion, highlighting, history search
- Remote development — files, repos, panes, and git data stay on the remote machine
- Native SSH — profiles, SFTP, port forwarding, and jump hosts
- Agent-aware — Claude Code, Codex & co.: status, notifications, git context
- CLI + Skills — agents create panes, run commands, and inspect output
Install
Native builds for macOS, Windows, and Linux 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 libraries bundled |
What's inside
| Editor-grade 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 · nine themes · IME |
| Agent-aware | per-pane detection (18 CLIs): status dot · notifications · branch + diff · resume after reboot · tray icon when input is needed |
| Remote workspaces | remote files, repos, changes, diffs, worktrees, tabs, and panes · reconnect from any client and continue where you left off |
| CLI + Skills | bundled tty7 CLI · agent skill · pane/workspace control · real PTY commands · output, process, port, and agent status |
| SSH | native russh stack: profiles with keychain secrets · SFTP panel · port forwarding · jump hosts · one-time, unprivileged tty7-server install |
Full documentation lives in docs/ —
keyboard shortcuts ·
config.json ·
CLI reference. The agent-facing CLI interface is also
documented in skills/tty7/SKILL.md.
Install the skill with:
npx skills add l0ng-ai/tty7 # install
npx skills update tty7 # update later
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 I/O — 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 server 11 MB.
Methodology and one-command reproduction: scripts/bench/.
Built on gpui and alacritty_terminal · Apache-2.0 · Discord · Changelog