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* fix(terminal): stop wide glyphs overlapping after fullwidth punctuation gpui's apply_force_width_to_layout tells a base glyph from a zero-advance combining mark by whether the shaped x advanced past half the forced width, and CJK fullwidth punctuation fails that test (U+FF08 advances ~0.47 em against a 0.6 em half-slot). In a batched wide run the glyph after such a character was classified as a mark and painted on top of it. Shape each wide glyph on its own line instead: the first glyph of a line is unconditionally a base, so the heuristic never misfires. * perf(terminal): intern wide-segment strings via char_string Each wide glyph now shapes alone, so its text is a single-char string — reuse the char_string memo instead of allocating a fresh String per cell per frame. The interned SharedString is also what keys gpui's line layout cache, so a CJK-dense repaint allocates nothing. * perf(terminal): skip MarkScanner's Text state ahead with SIMD memchr The scanner runs over every batch the client receives, and ordinary output — where the only byte that matters is ESC — dominates each one. Skip to the next ESC with memchr instead of stepping per byte, exactly as tty7-core's OscTokenizer already does: measured on an 8 MB batch of plausible output, 1.6 GB/s became 8.3 GB/s. Declare memchr for the root crate — it left with the OSC tokenizer's move down to tty7-core, and this is the first use since. * fix(terminal): advance segment_row past each wide glyph The unbatching change dropped the `col += 2` along with the batching loop it lived in, so the wide-glyph arm pushed its segment and looped on the same column forever, growing `segs` until allocation failed — the 6 GiB abort on the Windows CI runner, and a machine-freezing memory climb under a local `cargo test`. --------- Co-authored-by: lizhi <lizhi20@xiaomi.com> Co-authored-by: l0ng-ai <24760907+l0ng-ai@users.noreply.github.com> Co-authored-by: l0ng-ai <ysdpk123@gmail.com>
tty7
A terminal workbench: shells, sessions, SSH, coding agents.
Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty
English · 简体中文
Why
- Fast — ~2× the throughput of Alacritty, Ghostty, or Kitty (benchmarks)
- Sessions persist — quit or reboot; your shells keep running, no tmux
- Editor-grade input — completion, syntax highlighting, history search built in; zero config for zsh, bash, fish, PowerShell
- Agent-aware — recognizes Claude Code & co. in a pane: status, notifications, session resume
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 libs bundled |
What's inside
| 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 |
| Coding agents | per-pane agent detection (~17 CLIs): status dot, notifications, branch + diff, resume after reboot, tray icon that signals "needs your input" |
| SSH | native russh stack: profiles with keychain secrets, SFTP panel, port forwarding, jump hosts |
Details for every row: docs/features.md. Keybindings: ⌘ , opens Settings — browse and remap everything, tmux preset included (full list).
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 IO — 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 daemon 11 MB.
Methodology and one-command reproduction: scripts/bench/.
Built on gpui and alacritty_terminal · Apache-2.0 · Discord · Changelog