webdev 3c95995e82 fix(input): hand Ctrl+V to a full-screen program on the alternate screen (#677) (#682)
In vim or neovim on Windows and Linux, Ctrl+V pasted the clipboard where
the editor expected blockwise Visual mode. Windows Terminal (with its
ctrl+v binding removed), WezTerm and Alacritty all send the key; macOS
was never affected, since Cmd+V is the paste chord there.

Ctrl+V was not a keybinding at all. `on_key_down` hands plain Ctrl+C, V
and X to `handle_cmd_shortcut` off macOS, and of the three the "v" arm
was the only unconditional one: Ctrl+C copies with a selection and
otherwise falls through to SIGINT, Ctrl+X falls through outside the
editor, but Ctrl+V always consumed, so SYN never reached the PTY --
`input.rs` had the byte, unreachably -- and an empty clipboard turned the
key into nothing at all. #270 set the rule that off macOS ctrl-<letter>
belongs to the terminal and anything sitting on one must fall through;
Ctrl+V was the exception that had escaped it.

The arm is now contextual like its neighbours. On the alternate screen
it falls through, and `keystroke_to_bytes` sends 0x16, or the CSI u form
when the program has the kitty protocol on; off it Ctrl+V pastes exactly
as before, and Cmd+V on macOS is untouched. The alternate screen is the
gate rather than `input_active` because the editor is inactive whenever
shell integration is missing or the prompt editor is off, and gating on
that would take paste away from every such user; a program that has
switched screens is precisely the case reported. Inside such a program
paste is Ctrl+Shift+V, Shift+Insert or the right-click menu, all of
which still stage a clipboard image for an agent.

The same block did not exclude Shift, so Ctrl+Shift+C/V/X reached the
hardcoded path whenever the keymap had nothing on them -- exactly the
state rebinding Paste leaves behind, which #271 promised would retire
Ctrl+Shift+V, but it went on pasting behind the user's back. Only
unshifted chords enter the block now; the shifted ones are the keymap's
alone.

The right-click menu advertised Ctrl+C, Ctrl+X and Ctrl+V off macOS as
though they were the bindings, next to a Select All row that already
showed its hint on macOS only. The three rows take the same treatment,
which is also what the command palette does.

Three view tests pin the split -- Ctrl+V falls through on the alternate
screen while Cmd+V still pastes there, Ctrl+V pastes off it, and a key
down on the alternate screen arrives at the PTY as SYN and nothing else
-- and the keymap's paste test now asserts that no default claims ctrl-v
in the Terminal context. The shortcuts reference notes where plain
Ctrl+V pastes and where it is the program's.

Fixes #677.
2026-08-18 23:28:01 +08:00

tty7

tty7

A terminal workbench: persistent sessions, remote work, agents.

Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty


CI Version Platforms License Discord

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tty7 with a tab sidebar of agent sessions across several repos, running Claude Code

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/.


S
Description
A terminal workbench in pure Rust: shells, persistent sessions, SSH, coding agents. GPU-rendered on Zed's gpui, VT core from Alacritty.
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