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thomasandClaude Opus 5
0be3b67640
Every character came out as a different character, one for one, consistently — it read as a broken locale or a mangled encoding, and it was neither. Hack, the bundled default, has no CJK, so those cells are shaped through the font-fallback chain. gpui's Windows backend then threw away the face DirectWrite shaped the run with and looked a fresh one up by family, weight and style. That round trip mapped DirectWrite's italic to oblique — the enum is numbered OBLIQUE = 1, ITALIC = 2, and the mapping had them the other way around — so an italic fallback face resolved to a request for an oblique one, and a family with no oblique face (Maple Mono NF CN, first in our Windows chain) came back as its upright face instead. The glyph indices were right; the outlines they indexed belonged to a different face, at a fixed glyph-id skew. Fixed upstream in our gpui fork by registering the face DirectWrite actually chose rather than re-deriving one, which also closes a latent use-after-free in the same cache: it keyed fonts by a raw pointer to a face nothing held a reference to, so a released face could be aliased by any later allocation. Bumps the fork pin; no tty7 code changes. Covered there by two tests in `gpui_windows::direct_write` — one asserting a shaped run's glyphs round-trip through the font id the run reports, one asserting every font-face cache key is owned by the font it maps to. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.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