l0ng-ai 5418d66903 feat(scm): draw the commit graph in the panel's history section
The history section now renders a real `CommitPage`: lanes, nodes, merge
rings, refs and ages, over rows that behave like every other row in the
panel. It replaces the three-lane figure from the G7·0 spike, whose shape it
keeps unchanged — one canvas over the whole list, `paint_quad` for everything,
lane centres snapped to device pixels before the quad is built.

What the section is for decided most of the rest. 260px leaves about 26
characters beside the gutter, and this repository's subjects run to a median
of 64, so reading a message here was never going to work: what a reader gets
is where the branches are, where they merged, which refs sit where, and how
recently anything moved. Two things buy back what can be bought:

- The conventional-commit prefix comes off into a chip. `feat(terminal): ` is
  12.7 characters on average, and the type is exactly the part that reads
  better as three coloured characters than as prose. The split is strict, so
  `Merge pull request`, `fix:it` and a bare URL all keep their whole line.
- The lane gutter folds to a single column on request, worth another six.

Lane colours are derived, not tabled. `Theme::lanes()` seeds from the palette
in the order blue, yellow, magenta, green, cyan, red — no two neighbours share
a hue family, red and green are never adjacent, and red is last because a
panel three or four lanes wide never reaches it — then walks each one to
`ACCENT_FLOOR` on the window, the sidebar and a popover. Across the nine
builtins the worst contrast is 3.00:1 (untreated, `catppuccin_latte` sits at
2.31 and `rose_pine_dawn` at 2.05) and the worst adjacent pair is ΔE 13.8,
against a JND of about 2.3. A hard-coded palette would have been the one
colour in this file that ignores the theme, and the contrast tests cannot see
a literal.

Some notes on the drawing:

- Segments are deduplicated by column before anything is painted, which is
  what makes the overflow bundle work: five lanes folded into the last column
  produce one line, not five stacked at five alphas. `project` is a pure
  projection and never feeds back into the layout, so dragging the panel
  narrower re-columns for free and no branch changes colour.
- Cross-lane turns are right angles, and at a 12px pitch they read
  unambiguously — the same call tig, lazygit and `git log --graph` make. The
  horizontal runs half a line width past both centres, which is exactly what
  closes the corners the vertical stubs leave open.
- No `paint_layer` per line. Zed's graph does that; each one is a full-drawable
  render pass. `BoundsTree` already orders overlapping primitives, and edges
  arrive sorted by `paint_rank`, so the node's own line lands last.
- Nodes are rounded quads rather than paths: the quad shader rounds with an
  exact SDF and analytic anti-aliasing, where `PathBuilder` fills every vertex's
  `st` with `(0, 1)` and gets 4x MSAA alone.
- Paging grows `requested` and re-runs the query. The layout is deterministic,
  so a longer run reproduces the same prefix row for row and nothing on screen
  moves; `--skip` is O(skip) and slides under you when a ref moves. It is a
  row, not a scroll trigger — a remote `git log` is an RPC, and
  scroll-to-load turns one flick into a burst of them.
- Filtering hides the gutter. Lanes drawn across a subset of history would
  connect commits that are not adjacent, so a search result is a flat list,
  which is what it actually is.

Seventeen tests. Four in `presets` run with the existing contrast batch and
assert the floor on all three surfaces, adjacent ΔE, determinism and the seed
order. The rest cover projection, snapped lane centres, the width clamp, the
prefix split (including a Chinese subject, which is where byte indexing goes
wrong), band deduplication, the filter and the scope label. One runs a real
repository through a real pane and asserts the settled section draws zero
frames while idle — a canvas that repaints every frame reads as correct code.
2026-08-09 10:44:16 +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 License Discord

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/.


S
Description
A terminal workbench in pure Rust: shells, persistent sessions, SSH, coding agents. GPU-rendered on Zed's gpui, VT core from Alacritty.
Readme Apache-2.0
34 MiB
Languages
Rust 99.1%
Shell 0.5%
PowerShell 0.2%
Inno Setup 0.1%