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l0ng-ai
b4b860a042
Review findings on the in-place upgrade and per-pane history: - A failed exec now puts back everything it had staged: FD_CLOEXEC on the seat and every pty master (a child inheriting the seat keeps the flock held past the daemon's death, so no future daemon could seat itself), and the SIGPIPE disposition plus this thread's signal mask, both of which Command::exec resets on its way to the attempt — without this, the still-serving daemon dies on the first client that hangs up mid-write. - The adopting image restores close-on-exec on the seat and on every adopted master, so children it spawns later cannot hold a pty open past its pane, or the seat past the daemon. - The target binary is checked before the handoff gives anything up: native-SSH panes are hung up on the promise that this process is about to be replaced, and an exec that was never going to work must not collect on it. - The integration snippets raise HISTSIZE/HISTFILESIZE (bash) and SAVEHIST/HISTSIZE (zsh) for the pane's private history file. At their defaults the exit rewrite truncates the file below its own seed mark, which the merge-back rightly reads as "replaced under us" — silently losing the pane's commands for anyone with more history than the caps. - The restart dialog's promise now binds the action: where the copy said "nothing is interrupted", a failed handoff is reported instead of silently traded for the restart that kills every pane. - The scrollback writer checks the ring's mark before cloning it, so an idle pane no longer costs a full ring copy under the state lock every tick. Each behavioural fix carries a test that fails without it; the history truncation one was verified to fail with the snippet change removed.
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 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 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 |
Terminal and keybinding reference: docs/features.md. The agent-facing CLI interface is documented in skills/tty7/SKILL.md.
Install the skill with:
npx skills add l0ng-ai/tty7
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