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Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Neil
|
85a3ba6d42 |
fix(terminal): align CJK IME preedit spacing (#19367)
* fix(terminal): align IME preedit to terminal cell grid * fix(terminal): preserve native shaping and reuse IME preedit on repaint * fix(terminal): preserve native shaping with bounded IME spacing runs * test(terminal): account for inline preedit subpixel rounding * test(terminal): keep the IME grid fixture wide at every DPI * chore: regenerate xterm patch after rebase * test(terminal): remove IME assertion lint findings * test(terminal): avoid reflective IME fixture access * test(e2e): run IME renderer matrix with WebGL available * fix(ci): restore editor line budget |
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|
09073086a8 |
feat(terminal): inline images via @xterm/addon-image (perf-first) (#19512)
* feat(terminal): inline images via @xterm/addon-image, perf-first Add opt-in inline terminal images (SIXEL, iTerm2 IIP, Kitty graphics) through @xterm/addon-image, designed to keep idle terminals unaffected. Performance: - The addon (base64-inlined wasm decoders + protocol handlers) loads off the boot critical path via a deferred loader that mirrors the WebGL addon: primed after first paint only when the setting is on, read back synchronously at attach, with a 3-attempt cap so a transient failure never disables images for the session and a missing chunk never refetches per pane. renderer-boot-graph guards against eager import. - enableSizeReports:false so the addon never sets windowOptions and double-answers Orca's own CSI 14t/16t responder. - Perf-tuned decode/storage limits (storageLimit, sixel/iip/kitty size caps) in one place. Correctness: - Orca's DA1 handler wins over the addon's (last-registered-first), and the default DA1 response never advertised Sixel (;4), so DA1-detecting tools (chafa, img2sixel, viu, timg) never emitted it. The winning handler now appends ;4 while the setting is on, resolved per query so a live toggle changes the next DA1; idempotent against the ConPTY response that already lists it. - ORCA_IMAGE_PROTOCOL=kitty is exported to spawned shells (local, daemon, relay/SSH) and forwarded across the WSL boundary, so image-capable agents can pick an encoder. Unknown image sequences are swallowed by xterm when the addon is detached, so this never garbles output. - Settings toggle (default on) gates rendering and DA1 advertisement. Cross-checked against community PRs #7775, #11706, and #19201 at the end; credited below. Co-authored-by: s546126 <s546126@users.noreply.github.com> Co-authored-by: XRX193 <XRX193@users.noreply.github.com> Co-authored-by: lmsh7 <lmsh7@users.noreply.github.com> * fix(terminal): bound inline image memory and classify Kitty replies * fix(terminal): bound image decode and release image resources on cleanup * fix(terminal): address image addon review feedback * test(terminal): stub setPaneInlineImagesEnabled in appearance manager fakes * fix(terminal): evict unplaced kitty payloads before displayed images Byte-budget eviction dropped the oldest transmitted blob regardless of placement, so a new upload could erase a visible image while abandoned blobs still held budget. Unplaced payloads now go first and displayed ones only when that is not enough. The incoming image is always stored, so an oversized one overshoots the cap by one payload instead of being dropped after the protocol already acked OK. * fix(terminal): gate DA1 Sixel on real addon attachment; claim SSH image spec in CI - DA1 advertised Sixel from the setting alone, so a pane whose lazy addon chunk was still loading (or had failed all three attempts) told feature-detecting tools to emit DCS that nothing could render. Track the attached decoder per terminal and require it before setting the ;4 bit. - tests/e2e/terminal-inline-images-ssh.spec.ts was Docker-gated but claimed by no lane runner, so pr-e2e-gate-contract failed and the spec would have self-skipped green forever. - Reject non-positive PNG IHDR dimensions before decode: they are parsed with signed shifts, so a dimension >= 0x80000000 came back negative and slipped past the pixel-limit comparison. - One resolveTerminalInlineImagesEnabled() for the default-on setting; the four call sites mixed '?? true' with '!== false', which disagree on null. - One readInlineImageResources() walk of the addon internals instead of two copies that could drift against the patched dependency. - Isolate the deferred-attach drain per pane; make the zoom-invariance and backing-storage e2e assertions fail when the feature is dead. * refactor(terminal): one lazy xterm addon loader for webgl and image terminal-image-addon-loader was a structural clone of the webgl one — same memo, attempt cap, and .then(ok,err)-clears-memo recovery. Both now wrap createLazyXtermAddonLoader; each keeps its literal import() specifier so the bundler still splits the chunk (verified against a fresh build: addon-image stays out of the boot graph). * refactor(terminal): name openTerminal's addon flags; pin image addon limits Two adjacent optional booleans could be swapped without a type error once inline images added the second one. * docs(terminal): state the real per-pane image ceiling; drop test ordering dependency storageLimit:32 reads like the pane's budget but keys three pools — decoded pixels, retained encoded Kitty blobs, and pending WASM decoders — so the worst case is ~98 MB per pane with no cross-pane governor. Say so at the constant. pane-inline-images.test.ts's deferred case needed to run first; it now takes a fresh module instead, and the rest prime in beforeAll. Verified by running the file with that test moved last. * fix(terminal): satisfy rebased static analysis gate * fix(terminal): complete casting gate cleanup * fix(terminal): recover failed image addon loads * fix(terminal): bound image decoder allocations --------- Co-authored-by: m4air <m4air@m4airs-MacBook-Air.local> Co-authored-by: s546126 <s546126@users.noreply.github.com> Co-authored-by: XRX193 <XRX193@users.noreply.github.com> Co-authored-by: lmsh7 <lmsh7@users.noreply.github.com> Co-authored-by: Neil <4138956+nwparker@users.noreply.github.com> Co-authored-by: Neil <neil@stably.ai> |
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 BingZandNeil
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5bd0247aaa |
fix(xterm): remove scrollback decorations by identity (#13178)
* fix(xterm): fire Marker dispose before clearing line (#10879) Scrollback trim under search highlights was O(k²) because dispose set marker.line to -1 before onDispose, collapsing SortedList keys. Fire listeners first so delete still sees the real line, then clear the line. Fixes #10879 * fix(xterm): remove scrollback decorations by identity * perf(xterm): avoid index arrays for unique decorations --------- Co-authored-by: Neil <4138956+nwparker@users.noreply.github.com> |
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|
Neil
|
8463dcb7b9 |
fix(terminal): make wrapped-line search rewind iterative and bound its scans (#18402)
Patches @xterm/addon-search so one very long un-newlined line no longer overflows the stack, freezes the renderer, or goes unsearched. Submitted upstream as xtermjs/xterm.js#6149 (issue #6148); drop the patch once a release ships it. See the PR for measurements and the differential fuzz. |
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|
Neil
|
e84042572c |
Upgrade xterm to 6.1.0-beta.303 and generate addon patches
* Upgrade xterm to 6.1.0-beta.303 and generate the addon patches
Takes the current xterm beta line: xterm 287 -> 303, addon-webgl 286 -> 299,
addon-serialize 287 -> 300, headless 302, the remaining addons -> 300, and the
same set on mobile. All four packages stamp upstream commit d3e32b3.
The reasons are upstream #6042/#6043/#6055 (a shared glyph atlas no longer
garbles sibling panes on a page merge, clear, or sampler-budget overflow) and
Note that core 303 is not image-addon-only over 302: it carries the buffer perf
work, including the new BufferLineStringCache.
addon-webgl and addon-serialize move into the patch generator
--------------------------------------------------------------
Both were hand-edited minified bundles, which is what the Known Gaps section of
docs/reference/xterm-patch-regeneration.md described. Both reproduce byte for
byte from the pinned commit, so they are now manifest entries generated from a
source patch like @xterm/xterm already was. Their sourcemaps now move with their
bundles; before this they shipped maps whose offsets did not match the code
beside them.
The webgl patch shrinks from a 1.06 MB hand-edited bundle to a 6.6 KB source
patch, because upstream took the invalidation half Orca had backported. What is
left is only what upstream still lacks: the fragment-shader else branch for a
v_texpage past the sampler budget, the clearTexture guard that no-ops once a
merged page holds index 0, spending the merge retry budget before beginFrame
latches the version it saw, and Orca's font-weight probe.
The serialize source patch is byte-for-byte the same fixes as before; upstream
changed nothing in that addon between 287 and 300.
Generator fixes, each of which failed silently
----------------------------------------------
- `--relative` was appended after the `--` separator in CHECKOUT_DIFF_FLAGS, so
git read it as a pathspec and kept repo-root-relative paths, dropping every
source hunk from an addon's patch.
- `git apply` run from a package subdirectory still resolves patch paths from
the repo root, skips every hunk and exits 0. It now runs from the root with
`--directory=<packageDir>`, and a source patch that leaves the checkout
unchanged is a hard failure rather than an empty patch.
- An addon's own `tsgo -p .` has empty files/include and only project
references, so it emits nothing and the addon webpack then fails on a missing
./out/. The root build now runs first.
- versionStampFile is optional; publish.js stamps an addon's package.json, which
overlayBuildOutput never patches.
- On a version bump the lockfile has no entry under the new key yet, so --write
reports the gap instead of aborting mid-run. --check still fails on it.
Adding the two addons pushed the generator and the Electron packaging contract
test over max-lines, so the patch-text helpers move to xterm-patch-text.mjs
(pure text: no checkout, no build) and the vendored-xterm assertions move out of
the packaging contract into xterm-webgl-runtime-contract.test.mjs.
Tests
-----
Four tests asserted upstream bugs that are now fixed, not Orca behaviour:
- xterm-user-scrolling-contract pinned headless and core by version string.
Upstream bumps each package only when its own output changes, so headless 302
and core 303 are the same source. It now asserts they share a commit.
- Five CSI 3 J assertions expected a reader stranded at the top after an erase.
Upstream #6081 clears isUserScrolling there, so the erase releases them to the
bottom instead. Orca's pin still lands them correctly, because its parser
handler observes the erase before xterm's own handler runs.
- The IME transaction test hard-coded the xterm version; it now reads the
installed package, since the point is that bundle, map and version agree.
- The Electron runtime contract asserted Orca's old clearModelGeneration. Shared
atlas invalidation is upstream's now, so it asserts pageLayoutVersion on the
resolved dependency, plus the Orca-only hunks on the patch.
Verified: 66,008 unit tests, mobile's 3,863, the four WebGL atlas e2e specs, and
`regenerate-xterm-patches.mjs --check` in sync on all three packages.
Left alone deliberately: resetAllTerminalWebglAtlases still fans out globally
even though clearTexture now self-heals siblings, and upstream #6068
(WebglAddon.dispose leaks the GL context) is still open.
* Drop the two unused WebGL atlas fan-out exports
resetAllTerminalWebglAtlases and presentAllTerminalPanesWithoutAtlasClear have
no callers, and had none at
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Neil
|
7f822a73e3 |
fix(terminal): render the IME caret and give the candidate anchor one owner (#17170)
* fix(terminal): render IME caret without placeholder overlap * fix(terminal): preserve dim mid-line composition tails * fix(terminal): keep IME caret visible at row edge * fix(terminal): harden IME overlay lifecycle and layout * test(terminal): type final-cell layout mock * fix(terminal): keep final-cell IME anchor on-screen * fix(terminal): bind IME masking to composer ownership * fix(terminal): bound IME placeholder session ownership * fix(terminal): track latest IME placeholder session * test(terminal): share IME session event fixture * fix(terminal): keep both writers of the IME candidate anchor in agreement `textarea.style.left` has two writers: xterm's patched CompositionHelper and Orca's terminal-ime-candidate-anchor.ts. The anchor module listens on terminal.element, so within a composition event it writes after xterm's textarea listener and reverted the final-column clamp the patch had just applied. Moving the clamp into the anchor module and dropping the patch hunk does not fix it, and the rendered e2e caught that: CoreBrowserTerminal.ts:444 drives updateCompositionElements from onRender as well, so xterm re-asserts the textarea position on every repaint, with no composition event for that module to hear. The anchor survived only when no render happened to follow — measured as a flake at the final column, 1561.28px against a 1557px screen edge, the fully unclamped value. So both writers now compute the same clamp. The patch keeps it, because it is the writer on the render path and already holds cursorLeft, maxWidth and the preedit bounds. The anchor module applies the same one, so its composition-event write no longer reverts the correction in the window before the next render. Both halves are individually necessary and both are mutation-tested. Also restores _getRowRemainderText's expression from main: translateToString(true, x, line.length) and translateToString(false, x, getTrimmedLength()) are the same call, since upstream does endCol = min(endCol, getTrimmedLength()) under trimRight. Adds the two missing tests — one installing both anchor writers in a single rig, one driving a render under an open composition — plus disposal cleanup and clamp-bound coverage, and moves the Codex/Claude placeholder mask to a follow-up PR. |
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|
Neil
|
d143922561 |
fix(terminal): deliver an IME commit the deferred textarea diff missed (#15198)
Picking a single Chinese character from the candidate window with a number key loses it. The character flashes and disappears. Picking the same candidate with the mouse works, and picking multi-character words with number keys works. Two paths can deliver an IME commit, and this falls between them. A keydown the input method consumed routes into a setTimeout(0) diff of the helper textarea, and that diff is what normally delivers the commit; xterm's _keyDownSeen guard exists to defer to it. When the commit arrives after that timer has already run, neither path delivers. Mouse selection works because no key is down, and a real composition session works because it takes a different path entirely. That narrows it to an input method whose commit round-trips asynchronously and which shows no in-application preedit. Track that a consumed keydown still owes its commit, and deliver only when the diff did not. The upstream guard and its single read site are untouched, which is what keeps the duplicate-commit behaviour it was added for sealed. Not doing the obvious repairs deliberately: clearing the flag, skipping it for keyCode 229, or setting it after the composition short-circuit each unblock the input path without retiring the diff, and all three were measured emitting the character twice. The patch and the lockfile hash here are generated. Review config/patches/xterm-src/@xterm__xterm@6.1.0-beta.287.src.patch, which is the hand-written source of the change; the shipped patch and both minified bundles are the regenerator's output from the pinned upstream build, so nothing in this change was hand-transcribed into a bundle. Refs xtermjs/xterm.js#6036 Closes #12099 |
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Neil
|
49752477a6 |
build(xterm): restore the patch regeneration harness and gate it in CI (#15223)
* build(xterm): restore the patch regeneration harness and gate it in CI docs/reference/ime-architecture.md says "Never hand-edit the bundles in the patch" and links to docs/reference/xterm-patch-regeneration.md. That doc does not exist, and neither does the harness it describes. Both landed in |
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 NeilandOrca
|
17cfc968cf |
Revert the terminal IME composition-ownership change (#13282)
* Revert "test(ime): restore coverage the composition-ownership change removed (#13168)" This reverts commit |
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NeilandOrca
|
17b3dff3c4 |
refactor(terminal): return IME composition ownership to xterm (#13128)
* fix(terminal): return IME composition ownership to xterm * fix(mobile): derive terminal input from native replacement ranges * test(mobile): record iOS Japanese IME traces * fix(mobile): preserve native IME replacement ranges * fix(xterm): flush queued application input after IME commit * test(terminal): pin Korean intermediate commit * test: pin Windows IME shortcut ownership * test: replay IBus number candidate commit * fix: preserve native macOS input-method punctuation * refactor(terminal): remove stale mac focus override * fix(mobile): preserve soft keyboard deletion ranges * fix: keep IME-owned palette chords in renderer * fix: stop carried IME shortcuts at renderer owner * fix: preserve carried IME shortcut dispatch * fix: narrow main-owned shortcut actions * test(mobile): pin Japanese IME replacement traces * test(terminal): retain paired native IME trace * fix(chat): preserve browser IME composition ownership * fix(chat): retain macOS IME confirm gesture * fix(chat): expire unmatched IME confirm carry * fix(chat): isolate IME confirmation expiry * fix(chat): retain active IME confirmation * refactor(terminal): remove dead composition handler * feat(ime): add shared Enter-ownership seams for CJK composition The confirming Enter of a CJK composition arrives as two keydowns and the orderings differ by platform: Windows/Linux redispatch the unmarked Enter/13 before keyup, macOS delivers keyup first. A guard reading only isComposing or keyCode 229 misses the redispatch, so surfaces submitted on a confirm. Adds useImeEnterGestureOwnership (carry token, next-frame expiry), a shared ImeEnterGuardedForm for native implicit submission, and the cmdk seam covering 18 CommandInput surfaces at one site. A chorded Enter arms the carry but is never swallowed — the reverse would eat a user's deliberate Cmd/Ctrl+Enter. Both failure modes are pinned by ime-enter-gesture-ownership-contract.test.ts. Co-authored-by: Orca <help@stably.ai> * refactor(terminal): consolidate native input listeners and parked-screen owner Extracts the shared native-input listener installer and renames the parked-screen detector for what it actually does, replacing per-call-site duplication. The listener installer keeps a forgetOptionKeyLocationOnBlur flag so per-window semantics are preserved rather than flattened. Net deletion; no behaviour change intended. Co-authored-by: Orca <help@stably.ai> * test(terminal): pin recorded IME shapes as regression tests Nine regression tests built from hashed affected-platform captures, each with a paired ordinary negative and a discriminating mutation verified to take the file from all-passing to exactly one failure. Covers the Windows MS-Korean Shift family (#12179, #11878, #12151, #11946, #12152) and the Korean TUI line-break rows (STA-3237, STA-3222, STA-3129). STA-3237 pins the empirical 3-Shift / 2-active-composition / 2-newline ratio the device run established — the third Shift produces nothing because Space has already committed. That ratio is not derivable from a static capture. Co-authored-by: Orca <help@stably.ai> * fix(ime): guard Enter-commit surfaces against CJK confirm Applies the Enter-ownership guards across the surfaces whose Enter commits something: publishes, clones, pairs, installs, posts, or persists. Tiered deliberately rather than uniformly. Irreversible and remote-effect sites take the carry token, which also blocks the unmarked redispatch. Locally reversible sites take the oracle check with a one-line comment naming the residual, because a spurious commit there costs one undo. Three numeric fields are left unguarded with the reason in-code: Chromium blanks number inputs at compositionstart, so a confirm-Enter only ever reaches an empty-draft reset. Measured with a CDP probe rather than assumed — a guard that cannot fire is noise. Co-authored-by: Orca <help@stably.ai> * test(ime): teeth-check the Enter guards on every guarded surface One suite per guarded surface, each verified by deleting the guard and confirming the test fails. A green guard test without that check is unverified, not verified. Two shapes pass vacuously in happy-dom and are avoided here: native implicit form submission never fires, and blur() is inert on an unfocused element. Both made "the commit did not happen" assertions pass with the guard removed, so the suites assert the guard's contract directly instead. Co-authored-by: Orca <help@stably.ai> * fix(mobile): keep iOS Korean commits whole through the live-input path iOS Korean reports isComposing: false on every event, so it bypasses the composition guard entirely. The strict owner rejected UIKit's transformed post-change field and sent only the leading jamo — the reported symptom. Prefers the authoritative same-event field text over the predicted text when the supplied operation cannot produce it. Generic: no Korean special-case, no locale classifier, no normalization. Adds the RN-target-keyed submit carry alongside it. Co-authored-by: Orca <help@stably.ai> * test(e2e): make IME capture harnesses fail loudly instead of silently Four instruments recorded silence as success, so a void run scored as a clean one: - readTerminalImeBoundaryTrace returned an empty trace when the probe never installed, making every "nothing leaked" negative pass vacuously - summarizeLatencies([]) returned a perfect zero distribution that passed all three latency thresholds - the macOS Vietnamese spec pinned an input-source ID that does not exist, and failed as though the operator had chosen the wrong source - the expectedLineCount=1 prefix property was undocumented and one edit from silently downgrading a PTY assertion Input sources now resolve by enumeration and name the near-matches on failure. Co-authored-by: Orca <help@stably.ai> * test(terminal): cover Cangjie cancellation and fix a cross-namespace assertion Adds #11951's recorded Cangjie cancel shape to the existing cancellation suite, which covered Pinyin and Sogou but not Cangjie. One keystroke then Backspace arriving as deleteContentBackward with data: null, so the stale preedit is the only thing a fallback could replay. Verified against the historical pre-6cd944c62b3 bundle: the positive fails with ['尸'] where [] is expected, while the ordinary negative stays green. Also fixes the Vietnamese spec, which asserted a TIS-space input-source ID against getKeyboardInputSourceId(). Those two Orca APIs report the same source in different namespaces — TIS nests it under VietnameseIM, the app API does not. The resolver stays as an installation precondition; the assertion matches the leaf. Co-authored-by: Orca <help@stably.ai> * test(e2e): add a real-IME macOS arm for the Korean chord commit The existing korean-ime-terminal-shift-enter-commit spec synthesizes composition over CDP: Input.imeSetComposition sets the preedit directly and Input.insertText performs the commit. Asserting the IME produced events you injected yourself is circular, so that spec cannot certify real-IME behaviour. This arm selects 2-Set Korean via TIS, reads it back live, and injects through System Events key codes, so the OS owns the preedit, the commit instant, and isComposing. PTY byte expectations are preserved verbatim. Covers 2 of the original 4 cases by design. The other two are the Windows/Linux redispatch-before-keyup ordering, which macOS cannot produce and which cannot be selected -- the OS decides it. Reintroducing synthesis to "restore coverage" would reintroduce the circularity. Co-authored-by: Orca <help@stably.ai> * test(e2e): assert the macOS chord arm at the PTY boundary, not the renderer The byte expectations were transcribed from korean-ime-terminal-shift-enter-commit :364/:383, which assert against onData -- a renderer boundary where the terminator is CR. This spec reads the PTY child, where the tty has already converted CR to LF. Names both forms per row rather than swapping the constant, so the conversion reads as evidence that the capture reached past the renderer, as #11936 and #11951 record. Ctrl+Enter's CSI-u sequence is unaffected and is identical at both boundaries. Co-authored-by: Orca <help@stably.ai> * test(e2e): measure composer-to-onData latency and stop dropping IME keystrokes Two defects in the echo latency probe. It hooked onWriteParsed and onRender but never onData, so it measured key->parse->render echo rather than the composer-vs-onData delta the latency rows need. Adds a third hook feeding its own sample set. And `event.key.length !== 1` silently dropped IME keystrokes: Pinyin and Cangjie keydowns arrive as key:'Process' (length 7). Replayed over the captured corpus, the old filter accepted 580 of 4137 Chinese IME keydowns -- it was discarding 80% of them. The new filter matches the shape the owner itself branches on. Attribution charges each onData to the latest keydown rather than a FIFO head, because composing jamo emit no onData at all and a queue would credit a whole composition to its first keystroke. The consumer now asserts sample count before any percentile, so a zero-sample run cannot render as a flawless distribution. Co-authored-by: Orca <help@stably.ai> * test(terminal): pin the WSL shifted-jamo newline shape for #11919 In Korean 2-set, Shift types ordinary letters -- the double consonants and the compound vowels. Each such keystroke reaches Chromium as key='Process', keyCode=229, shiftKey=true. The v1.4.163 classifier matched exactly that pattern with no code guard, so it called those keystrokes Enter, rewrote them to a synthetic Shift+Enter, and injected a newline into the middle of the word -- with no Enter key pressed. That is why the reporters said "no modifier key pressed": they had not chorded Shift+Enter, but they had pressed Shift, to type the double consonant. Asserts the row's own recorded capture: 40 immediate keydowns, exactly 3 of them Shift-carrying inside a single syllable, and an onData stream with one newline per Enter press and none mid-word. Two ordinary negatives keep it from being a blanket mute -- the same session's non-IME keydowns still reach shortcut policy, and an ordinary Shift+Enter still resolves through the real policy. Co-authored-by: Orca <help@stably.ai> * test(terminal): pin the composition commit lag that made Korean type one behind macOS Korean 2-Set commits syllable N only when the first jamo of N+1 arrives, so compositionend and compositionstart land in the same task. A composition-start handler cancelled the pending finalizer that was the only path to triggerDataEvent and ended the session without emitting bytes, so every committed syllable reached onData exactly one syllable late and the backlog cleared only at a Space or Enter. Types continuously with no Enter and no Space -- either would flush the backlog and hide it -- and samples onData at every syllable boundary. Paired with a length-matched ASCII arm that stays green throughout, so the positive is a fact about composition rather than about timing in general. Bisected to a single call site across five builds: pristine, 1.4.155 and 1.4.162 pass, 1.4.163 fails, removing the one call repairs it, restoring it fails identically. That window is exactly the reporter's "started immediately after updating". Co-authored-by: Orca <help@stably.ai> * test(mobile): cover the send-queue abort that silently drops queued keystrokes One failed send in use-terminal-live-input-commit aborts every keystroke queued behind it, with the error swallowed by .catch(() => false). The existing test resolves(true) on every send, so the failure branch was uncovered. Four arms: the abort itself, an ordinary negative on the healthy path, a throwing sender, and a liveness control proving the queue recovers once the chain settles. Deleting the abort takes 4 passed to 3 failed, with the ordinary negative correctly surviving. Scope is stated in the docblock: this is a transport send-queue abort, reachable only via a real disconnect or RPC error. REQUEST_TIMEOUT_MS is 30s, so latency alone cannot reach the branch — consistent with #7094's symptom class, not proven to be its cause. * test(terminal): pin that daemon snapshot/restore cannot disturb a composition Two independent reporters attributed broken Korean composition to the always-on PTY daemon repainting terminal state over the preedit. The attribution is wrong on ancestry — the daemon shipped three months before the version both call good — but the boundary was never actually tested. Runs the real applyMainBufferSnapshot choreography against a live composition, including the full 2J/3J/H wipe plus the resize and alt-screen branches. textarea.value, selectionStart/End, compositionView.textContent and .active all survive byte-identical, and interleaving a restore between every jamo of 문제 still commits 문제 at onData. Also pins that the uncommitted preedit is absent from the captured snapshot: it lives in the textarea, never the buffer, so a restore has nothing stale to echo back. Injecting one textarea.value = '' into the restore fails exactly the three restore-boundary tests. * test(terminal): pin that Cmd tears down a composition where Ctrl and Shift do not xterm's composition keydown exempts only keyCode 16/17/18 (Shift/Ctrl/Alt) plus 20/229. macOS Meta — 91/93/224 — is absent, so a Cmd press mid-composition takes _finalizeComposition(false): the overlay goes dark and never recovers, because compositionstart is not re-fired. The user composes the rest of the word blind. Linux and Windows users press Ctrl and are exempt. xterm already has a Meta-aware modifier predicate in wasModifierKeyOnlyEvent, so this is an internal inconsistency rather than a deliberate choice. Owns no reported row and is version-neutral: 5/5 on both 1.4.162 and 1.4.163. The branch is unexercised in all 328 recorded traces, so this is a hazard pin, not a regression guard. Only the teardown is asserted; the likely duplicated commit needs a compositionend the IME kept alive across the Cmd, which no capture contains. Deleting the exemption fails exactly the three paired negatives; adding Meta to it fails exactly the two Cmd arms. * test(native-chat): characterize preedit loss when a question card replaces the composer An AskUserQuestion card fully replaces the composer by design, but the in-flight composition goes with it: the composer unmounts before compositionend reaches it, so the preedit is never committed to the draft. The committed text survives only because the draft is cached and restored via defaultValue. Node identity changes, value 'abc' is preserved, the 가 is gone. Drives the real NativeChatView -> SessionGate -> InteractiveCard -> questionActive swap -> Composer -> ComposerField, flipped by writing the same store field an AskUserQuestion hook event writes. Flipping questionActive to false fails exactly this test and nothing else across 639 native-chat tests, so the path was entirely unguarded. CHARACTERIZATION TEST: it asserts the loss. Fixing the defect — committing the preedit before the swap, or keeping the composer mounted — will make this file fail. Update the expectations to the new contract rather than working around them. Owns no reported row. #12118/STA-3219 flicker is keyed to token counters, which provably do not remount, and a question card arrives once per question. * test(terminal): pin the duplicated commit when Meta interrupts a composition _finalizeComposition(false) sends textarea.value.substring(start, end) but cannot clear the IME-owned textarea, so a later compositionend re-sends the same range. Meta reaches that path because CompositionHelper exempts only Shift/Ctrl/Alt; xterm's own wasModifierKeyOnlyEvent covers Meta four ways, so the omission is an internal inconsistency rather than a choice. Companion to the modifier-exemption guard, which deliberately pins only the overlay teardown. This pins the data consequence. HAZARD PIN: owns no reported row. The trigger is unverified on hardware — no capture in the corpus contains a Meta-during-composition gesture, and whether macOS keeps the composition alive across it is unmeasured. The duplication follows from the code given that sequence; whether users reach the sequence is the open half. An earlier premise that Space (keyCode 32) reaches this path was refuted by a corpus scan: 0 of 731 evidence files carry a keyCode-32 Space while composing, against 171 at 229, and 229 returns early. * test(terminal): characterize the syllable lost when the textarea blurs mid-composition CoreBrowserTerminal._handleTextAreaBlur clears the helper textarea unconditionally — "Text can safely be removed on blur" — while CompositionHelper._finalizeComposition reads the committed text back out of that same value from a deferred timeout. By the time it runs the value is empty, the substring is '', and triggerDataEvent never sees the syllable. xterm checks composition state in _syncTextArea and omits the same check here. Six cases. Blurring mid-composition loses the syllable in every ordering, including compositionend-before-blur, which is Chromium's real order — so it is not an ordering artifact. A bare textarea.blur() with no Orca code loses it too, which places the owner upstream: Orca's unguarded release on outside pointerdown is one trigger, not the cause. Committing 한 then blurring mid-가 yields ['한'] where ['한','가'] is correct: one syllable gone, surrounding text intact. Teeth checked by inverting — adding an Orca-side composition guard flips exactly the three cases that route through the release path and leaves the bare-blur and no-blur cases green, which is the scope split: a fix in regular-terminal-focus-ownership alone would not close this. HAZARD PIN, but unlike the others this one has a real production injector — clicking outside the terminal mid-composition. Owns no reported row. The shape matches #9738's report; the injector does not, and a shape match with a mismatched injector is not an owner. * test(terminal): say which arm the STA-3237 fixture came from The recorded keydowns are wave 4's A-shift-unmarked-only — the arm that emits no PTY bytes. Nothing in the file said so, so two readers concluded the row's events fail the owner's predicate and that STA-3237 and STA-3222 were different defects. They share an owner; the arm that fires is Process/229+Shift, absent from this bubble-phase trace because the owner claims it in the capture phase. Also corrects "code-blind": the v1.4.163 policy emits \x1b\r only for a shift-only key:'Enter', and a jamo keydown reaches that branch solely via the isTerminalImeProcessEnter rewrite. The mock is deliberately wider so the ownership guard stays under test if that rewrite moves. Comments only — no assertion, fixture value, or mock behaviour changed. * test(e2e): track the input-source selector the macOS specs shell out to Five tracked macOS IME specs ran `swift .tmp/select-input-source.swift`, a file that is gitignored and existed only on one machine. Anyone else checking out the repo — or the same machine after .tmp is cleaned — could not run them, and they are the capture drivers for the macOS rows that are blocked waiting for exactly those runs. Moves it to tests/e2e/ beside its callers. The chord spec now resolves it from __dirname rather than reaching two levels up into .tmp. * test(terminal): pin the CJK repaint decision against the reporter's own output #12164 comment 1 and #5921 report agent output with double-width glyphs rendering duplicated character-by-character while ASCII in the same line stays clean. No IME, no composition, no keystroke — the user never types the CJK. Segmenting all three verbatim samples into maximal same-risk-class runs gives 33 runs and zero violations of "this run is corrupted iff the production detector flags it": 17 wide runs all corrupted, 16 narrow runs all byte-identical. The paired negative is co-located in the same line rather than in a separate run — the reporter supplied it without knowing. Doubling is asserted as present, not uniform: 자바스크립트 and 시스템 each leave a jamo undoubled, which is a repaint-region boundary artifact rather than a per-character transform. The discriminating arm is in the test rather than a source mutation: |