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The SSH profile form saved whatever was in it. An empty host wrote a profile that renders as a blank row in the host list and hands `TcpStream::connect` an empty name — and Connect had no gate at all, so the first thing the user heard about it was a DNS error naming nothing. A jump host with a typo in it resolved to `None` and saved as a direct connection, with the field blank the next time the form opened. And `parse_host_port` was `parse().unwrap_or(0)`, so `proxy.example.com`, `proxy.example.com:` and `proxy.example.com:88O` all saved a proxy on port 0, which the socket layer got to explain (#492, #493, #494). The rules now live in `validate_ssh_draft`, a plain function over a plain-String snapshot of the form, which returns both the profile the form would save and what is wrong with it. Both, always: the Escape prompt asks whether the form differs from the config, and handing back only the errors would make a brand-new invalid profile compare equal to the nothing on disk — Escape would throw the typing away without asking. Only the host is required. A name is not, because the list already falls back to the address and every host imported from ~/.ssh/config arrives without one. A blank port still means 22, but a non-empty one has to be a port, so "0", "abc" and "70000" are refused rather than saved as written or quietly rewritten. A proxy address with no port takes the scheme's default (1080 / 8080) and `host_port_text` writes that back into the field, so the number it picked is visible; a colon with nothing usable after it is an error. `map_proxy` also stops treating port 0 as a proxy, because configs written before this are already on disk. Each complaint prints under the field it is about, and Save and Connect are disabled while any of them stands; a section holding one unfolds so the disabled button always has a visible reason. The "needs a host" line waits until the name/host/port/user group has something in it — every field notifies per keystroke, so otherwise a new host would be told off before anyone had typed a character. Consequence: on a pristine new form Save is now disabled where it used to be enabled.
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