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l0ng-ai
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A host that grows an ed25519 key beside the ssh-rsa one it has always had raised the full man-in-the-middle sheet — red border, fingerprint diff, a "type yes" field — because `check_in_str` folded "known by another algorithm" into `HostKeyStatus::Changed`. OpenSSH treats a key of an algorithm the host has no entry for as simply unknown, and saves the alarm for a key that contradicts one on file. `ChangedAlgorithm` splits the two apart, with `Changed` keeping precedence so a same-algorithm mismatch still screams however many other-algorithm lines sit beside it. The dialog was only half of it. Negotiation started from russh's default order, which leads with ed25519, so a host known only by ssh-rsa was *asked about on every single connection* — and an attacker could pick an algorithm the user had no entry for to trade the alarm for the mild confirmation. `build_preferred` now orders the host-key list the way OpenSSH's `order_hostkeyalgs()` does: what is already on file goes first, nothing is dropped, and a pinned `HostKeyAlgorithms` is left alone. It matches on key type, so all three RSA spellings travel together rather than pinning the host to SHA-1 signatures. The prompt reuses `AuthPromptKind::HostKeyUnknown` with an added optional field rather than gaining a variant: the enum is externally tagged and crosses both the daemon/GUI and the GUI/tty7-server boundaries, where a new variant is a hard decode failure on an older peer and a new field is not. Also fixes a defect the issue did not mention: overriding a genuinely changed key appended the new line without removing the old one, and since any same-algorithm match answers `Known`, the superseded — possibly attacker's — key stayed trusted forever, silently. The superseded line is now dropped first, and only lines naming this one host are touched, so a wildcard or `@revoked` entry is never collateral.
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