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fix(web): preserve Shift+Enter on iPad hardware keyboards - #21814
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ApprovabilityVerdict: Approved at Macroscope's review found this PR approvable — This is a narrowly scoped iPad keyboard bug fix: Shift+Enter bypasses only ProseMirror’s delayed unmodified-Enter fallback, while ordinary Enter and non-iOS behavior remain unchanged. The remaining changes register the pinned dependency patch and add focused browser regression coverage. You can add or adjust custom eligibility rules. Learn more. |
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| Check name | Status | Explanation |
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| Description check |  |
The description includes all required sections. It clearly explains the problem, implementation, scope exception, approval context, focused verification, limitations, and UI evidence. |
| Title check | |
The title clearly and concisely identifies the primary fix: preserving Shift+Enter behavior on iPad hardware keyboards. |
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Review comments at
@apps/web/src/components/ComposerPromptEditorTiptap.ipad.browser.test.tsx:
- Line 53: In the test call to composerSubmissionIntentForKey, replace the
undeclared isMobileViewport property with isSoftwareKeyboardOpen so the test
supplies the option the function requires.
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apps/web/src/components/ComposerPromptEditorTiptap.ipad.browser.test.tsxpatches/prosemirror-view@1.42.3.patchpnpm-workspace.yaml
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Key the patch by ^1.42.3 so a regenerated lockfile that resolves a newer 1.x release still applies it, and match the test to the renamed isSoftwareKeyboardOpen resolver option.
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Problem
Shift+Enter submits a prompt instead of inserting a newline in the iPad Safari web composer with an external keyboard. This contradicts the documented iPad shortcuts. Related to #14869.
The reporter reproduced this on iPadOS 27.0.1 with a Logitech keyboard and T3 Code 0.1.0, using app.t3.codes through T3 Connect and directly in Safari. The send shortcut was set to Enter. Disabling rich text did not help.
ProseMirror view 1.42.3 defers iOS Enter handling and later synthesizes an unmodified Enter event. Its modifier check excludes Control, Alt, and Meta but not Shift, so the composer receives an ordinary Enter and submits.
Change
Add Shift to the modifiers that bypass ProseMirror’s delayed iOS Enter workaround, using the repository’s existing pnpm patch mechanism. Shift+Enter reaches the normal key handler with its original modifiers. Unmodified Enter retains the virtual-keyboard workaround, and the existing editable and composition guards remain in place.
Patch the source and both ESM/CommonJS exports, register the patch, and update its lockfile reference. The patch is keyed to
^1.42.3because the latest release, 1.42.6, has the same condition and a fresh resolution picks it. If a later release changes those lines, pnpm fails the install instead of silently skipping the fix. No dependency versions change and no composer-specific event tracking is added.Add eight browser regression cases for plain/rich text, native keyboard input, a subsequent key arriving before the former fallback, ordinary Enter submission, read-only state, and active/recent composition.
Scope and approval
This is submitted under the small, focused, obvious-bug exception in CONTRIBUTING.md. It restores an established, documented shortcut without changing product defaults or adding a workflow. The condition changes only iOS Enter events carrying Shift. The dependency patch also covers other ProseMirror editors using this package; non-iOS behavior is unchanged.
The linked report establishes the symptom, not maintainer approval of this implementation. Physical iPad verification remains outstanding, so this PR does not automatically close the issue.
Verification
Observed behavior
A standalone browser fixture rendered the actual T3 composer and used the actual submission-intent resolver with sendShortcut set to Enter. Chromium’s navigator vendor/touch properties were set before imports to exercise ProseMirror’s real iPad path. This is browser-path emulation, not physical iPad testing.
Checks
git apply --checkof the patch against prosemirror-view 1.42.6 passed with line offsets only.pnpm install --lockfile-only): it resolved 1.42.6 and recorded the patch hash with no unused-patch error.vp test run apps/web/src/composer-logic.test.ts --maxWorkers=1: 103 tests passed.git diff --checkpassed.Evidence
Full T3 web app (
vp run devwith a seeded database), Chromium at 1180x820 with the values iPadOS Safari reports:navigator.vendor"Apple Computer, Inc.", platform "MacIntel", a Safari user agent, andmaxTouchPoints5. That enables ProseMirror's real iOS path. Each run types "first line", presses Shift+Enter through Playwright's keyboard, waits 600 ms (past the 200 ms fallback), then types "second line". Agent CLIs were left off the server's PATH so a submitted prompt could not start a real turn; the provider error in the before shot comes from that.Before (base commit
34c5a6d4, unpatched prosemirror-view 1.42.3): Shift+Enter sends "first line" as a prompt, and "second line" starts a new draft.After (this branch): Shift+Enter inserts a newline and nothing is sent.
Component-level screenshots
The T3 composer component mounted on a standalone test page.
Before, the original Shift modifier is present but the composer submits:
After, native Shift+Enter inserts a single newline with zero submissions:
Evidence links expire October 19, 2027.
Models: gpt-6.1-sol (Codex) and claude-opus-5-5 (Claude Code), both in T3 Code.