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Keep active pane border aligned when split zoom changes pane bounds - #14646
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Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughTmux pane overlay geometry now selects the zoomed split container when split zoom is active. Geometry uses the overlay controller’s reference view when available. The active-pane border is clipped to the canvas bounds. ChangesTmux pane overlay geometry
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Suggested reviewers: Merge Risk: ⚪ Minimal · up to The pane-border changes are ready to merge after normal checks; no actionable issue remains from this review. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change affects pane-overlay drawing, not access to workspaces or other privileged behavior. The new geometry methods have a narrow purpose, but their public contract and use outside the observed application remain uncertain. Retained concerns Security review detailsSecurity Blast Radius
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Full details: Docstring CoverageExplanation Docstring coverage is 36.36% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 6 files. (2 skipped: 1 unsupported, 1 too large.) Full details: Cmux Full InternationalizationExplanation The PR adds user-facing changelog copy in Resolution Move the new changelog entry to a locale-aware message/source model consumed by the changelog route, and add a real translation for the entry in every supported file:
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Inline comments:
In `@Sources/ContentView.swift`:
- Line 1052: Update tmuxWorkspacePaneExactRect so every panel type eligible for
Bonsplit zoom can resolve exact geometry from its visible host view when
isSplitZoomed is true. Preserve the non-zoom geometry behavior and do not fall
back to paneRect, which may describe the pre-zoom split.
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Sources/ContentView.swiftcmuxTests/WindowAndDragTests.swift
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Addressed the package-boundary finding in 77811e3: pure zoom/container and preferred-rect selection now live in CmuxWorkspaces TmuxPaneOverlayGeometry, with focused Swift Testing coverage; AppKit view lookup and Canvas drawing remain in the app. Documented coordinate-space invariants and added a changelog entry. Verification: 11 package tests, 9 AppKit overlay tests, and verify-local.py 10/10 passed. The docstring coverage result was inconclusive rather than a failing check. |
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Merge receipt for
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Merged, thanks @classicluna! The active pane border now follows the zoomed pane. |
f39a1e5 Localize the Cancel button in close-confirmation dialogs (manaflow-ai#14780) 1508a9b opencode plugin: send surface_id on feed events (manaflow-ai#14781) 766c2c2 deps: bump iroh-ffi to 1.2.0-cmux.1.ios17 (iroh 1.2.0 + noq 1.3.0) (manaflow-ai#14714) 79a6ff6 Keep active pane border aligned when split zoom changes pane bounds (manaflow-ai#14646) a3a8726 mobile: give each terminal's render-grid output its own QUIC stream (manaflow-ai#14699) b7c3d23 fix: echo requested PID from delivery target resolution (manaflow-ai#11166) 11bcc80 ci: fill idle and briefly busy owned minis before Blacksmith (manaflow-ai#14774) # Conflicts: # .github/workflows/test-e2e.yml
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Summary
The active pane border stayed at its pre-zoom split size (#11136). It now follows Bonsplit's visible zoom container for every panel type, while normal splits keep the existing hosted-view geometry. Clamp the border to the overlay canvas so its bottom stroke remains visible instead of extending past the window edge.
Testing
CMUX_DEV_BACKEND_MODE=local ./scripts/reload.sh --tag pane-border-clamped --no-global-cli-linksbuilt an isolated app; stable cmux was not replaced.xcodebuild -project cmux.xcodeproj -scheme cmux-unit -configuration Debug -destination 'platform=macOS,arch=arm64' -derivedDataPath "$PWD/.build/contributor-tests" build-for-testingcompiled the app and test product.TmuxWorkspacePaneOverlayTestsran withtest-without-building: 3 passed, 0 skipped, 0 failed (xcresult atTest-cmux-unit-2026.09.25_11-56-50--0400.xcresult). Tests cover zoomed vs unzoomed geometry, panels without hosted views, and overlay reference coordinates.python3 scripts/verify-local.pypassed all 10 static checks;git diff --checkpassed.Demo Video
Before zoom
After zoom
Checklist
Summary by CodeRabbit