Neilandrayim 453237cc57 fix(terminal): render the row tail the IME preedit overlay covers (#15014)
* fix(terminal): render the covered row tail inside the IME preedit overlay

Closes #12545.

Composing mid-line hid the character at the cursor for the whole composition.
The preedit overlay is an opaque box anchored to the cursor cell, and nothing
reaches the pty while composing, so those cells still held their characters —
the box simply covered them.

`CompositionHelper` now draws the rest of the row after the preedit inside the
view, so the composition reads as inserted text pushing the tail right. Four
details come with it:

- The view is start-anchored while it carries a tail, so the preedit stays put
  and the pushed tail clips at the right edge; alone, `rtl` still keeps a long
  preedit's end in view.
- It is themed from `options.theme` instead of the stock `#000`/`#FFF`, with any
  alpha dropped — the view masks the cells it draws over, so a see-through
  background would re-expose the very characters the tail stands in for.
- The helper textarea syncs to the preedit's own bounds, so IME candidate
  dialogs anchor to the composing text rather than past the rendered tail.
- A TUI can repaint the row under an open composition, so
  `updateCompositionElements` — which already runs on every render — re-reads
  the remainder and re-renders on change. A string compare adds no layout read.

The tail is read with an explicit end column: the cacheable form of
`translateToString` arms the line string cache's self-renewing idle-clear timer,
and the composition path must own no timers.

Geometry is not the cause. Two mature reference terminal implementations compose
marked text into the grid rather than into a floating box, and both still blank
the cells under it — one of them literally substitutes the marked characters
into the row's character array before rasterizing. Moving off the overlay would
not have fixed this report; rendering the covered tail is what does.

The e2e arm asserts the invariant an opaque overlay owes the grid: it must
render every committed cell its bounding rect covers. That is measured from the
real rect against the real cell grid, so it fails on the unfixed build with
`covers "하" / renders "가"`.

Known limitation: the rendered tail is plain-styled while composing (theme
foreground on theme background, no per-cell colors); colors return on commit.
This is inherent to the overlay, and drawing the preedit into the cell renderer
instead would be a far larger change.

Co-authored-by: rayim <rayim@fxy.global>

* test(e2e): assert the occlusion invariant, not the runner's cell width

CI covered four columns where this machine covers two — 34.4px over an 8.43px
grid against 12.3px over an 8px grid — so pinning the covered text verbatim
pinned the font metrics rather than the behaviour. Assert instead that every
committed cell the overlay covers appears in what it draws, which is the actual
invariant and holds at any cell width.

Still fails against main: covers "하" / renders "가".

* fix(terminal): keep the rendered tail's spacing on the grid

The composition view is white-space: nowrap, which collapses runs of spaces
exactly like normal — it only suppresses wrapping. So a committed tail carrying
padding drew its trailing glyph cells left of where the grid has them: measured
in Chromium with xterm's own rule, twenty spaces plus a border rendered two
cells wide instead of twenty-one.

The visible case is Orca's most common IME context — composing inside an agent
TUI input box, where the row is a prompt, padding, then a real border glyph the
trim cannot drop. A stray border appeared a cell after the preedit while the
real one stayed put.

xterm sets white-space: pre on its grid rows for this reason; the view was only
nowrap-safe while it held preedit text alone.

The existing fixtures are all space-free, and the e2e invariant is that the
overlay renders everything it covers — collapsing makes it cover less, so both
stayed green. Pinned with a padded-row fixture.

---------

Co-authored-by: rayim <rayim@fxy.global>
2026-08-17 00:18:11 -07:00
2026-07-11 20:53:20 -07:00
2026-05-04 20:42:03 -07:00
2026-03-16 22:27:51 -07:00
2026-03-28 10:19:14 -07:00

Orca Orca

GitHub stars Total downloads across all releases License: MIT Join the Orca Discord Follow Orca on X Supported platforms: macOS, Windows, and Linux

中文 · 日本語 · 한국어 · Español · Français · Português

The AI Orchestrator for 100x builders.
Run Codex, ClaudeCode, OpenCode or Pi side-by-side — each in its own worktree, tracked in one place.

Download Orca

Orca desktop app running agents in parallel worktrees, with the Orca mobile companion app in the corner

Features

Mobile Companion

Monitor and steer your agents from your phone — get notified when an agent finishes and send follow-ups from anywhere.

iOS App Store · TestFlight · Android APK 0.0.43 · Docs →

Orca desktop with the mobile companion app

Parallel Worktrees

Fan one prompt across five agents, each in its own isolated git worktree — compare the results and merge the winner.

Docs →

Parallel worktree orchestration

Terminal Splits

Ghostty-class terminals with WebGL rendering, infinite splits, and scrollback that survives restarts.

Docs →

Terminal splits

Design Mode

Click any UI element in a real Chromium window to send its HTML, CSS, and a cropped screenshot straight into your agent's prompt.

Docs →

Embedded browser and Design Mode

GitHub & Linear, Native

Browse PRs, issues, and project boards in-app — open a worktree from any task and review without a context switch.

Docs →

GitHub and Linear task workflows in Orca

SSH Worktrees

Run agents on a beefy remote box with full file editing, git, and terminals — auto-reconnect and port forwarding included.

Docs →

Remote worktrees over SSH

Annotate AI Diffs

Drop comments on any diff line and ship them back to the agent — review, edit, and commit without leaving Orca.

Docs →

Annotate AI-generated diffs

Drag Files to Agents

VS Code's editor with autosave everywhere — drag files or images straight into an agent prompt.

Docs →

Drag files and images into an agent prompt

Orca CLI

Agents drive Orca too — script every workflow with orca worktree create, snapshot, click, and fill.

Docs →

Script Orca from the CLI

Also in the box:

  • Quick open — Search across worktrees, files, agents, commands, and repo context without leaving your flow.
  • Account switcher & usage tracking — See Claude and Codex usage and rate-limit resets, and hot-swap accounts without re-logging in.
  • Rich repo previews — Preview Markdown, images, PDFs, and repo docs in the workspace.
  • Computer Use — Let agents operate desktop apps and visible UI when a workflow needs real interaction.
  • Notifications and unread state — Know when an agent finishes or needs attention, then mark threads unread to come back later.
  • And many, many more — we ship daily, so this list is perpetually behind. The changelog is the real feature list.

Supported Agents

Works with any CLI agent — if it runs in a terminal, it runs in Orca.

Claude Code logo Claude Code   Codex logo Codex   Grok logo Grok   Cursor logo Cursor   GitHub Copilot logo GitHub Copilot   OpenCode logo OpenCode   MiMo Code logo MiMo Code   Amp logo Amp   OpenClaude logo OpenClaude   Antigravity logo Antigravity   Pi logo Pi   oh-my-pi logo oh-my-pi   Hermes Agent logo Hermes Agent   Devin logo Devin   Goose logo Goose   Auggie logo Auggie   Autohand Code logo Autohand Code   Charm logo Charm   Cline logo Cline   Codebuff logo Codebuff   Command Code logo Command Code   Continue logo Continue   Droid logo Droid   Kilocode logo Kilocode   Kimi logo Kimi   Kiro logo Kiro   Mistral Vibe logo Mistral Vibe   Qwen Code logo Qwen Code   Rovo Dev logo Rovo Dev   + any CLI agent


Install

Desktop — macOS, Windows, Linux

Or via a package manager:

# macOS (Homebrew)
brew install --cask stablyai/orca/orca

# Arch Linux (AUR) — or stably-orca-git to build from source
yay -S stably-orca-bin

Mobile Companion — iOS, Android

Pair with your desktop app to monitor and steer your agents from your phone.


Community & Support

  • Discord: Join the community on Discord.

  • Twitter / X: Follow @orca_build for updates and announcements.

  • WeChat: Scan to join the Orca community WeChat group 7.

    WeChat group 7 QR code for the Orca community
  • Feedback & Ideas: We ship fast. Missing something? Request a new feature.

  • Privacy: See the privacy & telemetry docs for what anonymous usage data Orca collects and how to opt out.

  • Show Support: Star this repo to follow along with our daily ships.


Developing

Want to contribute or run locally? See our CONTRIBUTING.md guide.

Orca contributors

GitHub star history chart for stablyai/orca

Signed Builds

Windows code signing sponored/provided by SignPath.io, certificate by SignPath Foundation.

License

Orca is free and open source under the MIT License.

S
Description
Orca is the ADE for working with a fleet of parallel agents. Run any coding agent with your own subscription. Available on desktop, mobile and remote runtime.
Readme MIT
1.5 GiB
Languages
TypeScript 95.2%
JavaScript 4%
Swift 0.2%
CSS 0.2%
HCL 0.1%