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ssh-tmux mirror: preserve deliberate pane titles - #10714
teamleaderleo merged 26 commits into
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Included review availability: Your plan provides up to 10 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe change adds tmux pane-title metadata parsing, live subscriptions, revision ordering, state retention, and mirrored surface-title updates. CLA login checks now use portable lowercase conversion. ChangesPane title metadata
Portable CLA login normalization
Estimated code review effort: 3 (Moderate) | ~25 minutes Sequence Diagram(s)sequenceDiagram
participant tmux as tmux
participant connection as RemoteTmuxControlConnection
participant sessionMirror as RemoteTmuxSessionMirror
participant windowMirror as RemoteTmuxWindowMirror
participant surface as Mirrored surface
tmux->>connection: Send pane-rectangle snapshot
connection->>connection: Parse pane-title metadata
tmux->>connection: Send cmux_title_ update
connection->>connection: Track live metadata revision
connection->>sessionMirror: Emit pane-title change
sessionMirror->>windowMirror: Update affected pane metadata
windowMirror->>surface: Select intentional or fallback title
Suggested reviewers: Merge Risk: 🔵 Low · up to The PR makes deliberate remote pane titles appear and update live in mirrored surfaces, but pane-title subscriptions are not removed when panes are torn down, creating a bounded risk of stale updates or resource retention during pane churn. Merge is reasonable with explicit owner awareness and follow-up to make cleanup symmetric. 🚥 Pre-merge checks | ✅ 14 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (14 passed)
Full details: Description checkExplanation The description clearly explains what changed, why it changed, the reproduction steps, and the tests performed. The Demo Video, Review Trigger, and Checklist template sections are missing, but the core description is complete and relevant. Full details: Cmux Swift Actor IsolationExplanation This pull request adds pane-title metadata storage and live subscription support to the RemoteTmux mirror system. A comprehensive review of the Swift actor isolation changes confirms no violations of the rules defined in Full details: Cmux Swift Blocking RuntimeExplanation PASS. The production Swift changes add metadata state, parsing, subscriptions, observer callbacks, and pruning logic. The per-commit diffs for the feature changes add no semaphore, blocking wait, sleep, delayed dispatch, timer, main-queue sync, or manual-lock primitive. The existing Full details: Cmux Browser Automation Off-MainExplanation PASS: The pull request does not change browser socket automation routing. The policy-scoped files Full details: Cmux Expensive Synchronous LoadExplanation This pull request adds pane-title metadata handling to tmux mirror surfaces. The investigation confirmed that no expensive synchronous agent-history loads or file operations were introduced. The Swift changes involve: 1. RemoteTmuxPaneTitleMetadata (new public struct): Parses three separator-delimited tmux fields via string splitting and performs simple string comparisons to distinguish deliberate pane titles from host-default titles. All operations are lightweight string manipulation with no file I/O or external lookups. 2. Pane title metadata storage and updates: Dictionary entries mapping pane IDs to metadata, updated with in-memory string comparisons. The Full details: Cmux Cache Substitution CorrectnessExplanation The PR does not violate cache substitution correctness. The pane-title metadata implementation uses a revision-tracking mechanism that properly handles both cold cache (never-loaded) and stale cache (older-than-source) scenarios: Evidence: 1. Fresh Authoritative Sources: The code reads from tmux control-mode Full details: Cmux No Hacky SleepsExplanation PASS: The covered production shell change only replaces Bash lowercase expansion with Full details: Cmux Algorithmic ComplexityExplanation The pull request adds pane-title metadata tracking to preserve deliberately set tmux titles on mirrored surfaces. The implementation introduces three new state dictionaries and associated algorithmic operations. Analysis of these operations against the algorithmic complexity rules in Full details: Cmux Swift ConcurrencyExplanation PASS. The topic diff adds no Full details: Cmux Swift `@Concurrent`Explanation PASS: The feature diff adds no Full details: Cmux Swift Package BoundariesExplanation The pull request does not violate Swift package boundaries. RemoteTmuxPaneTitleMetadata, the primary domain type for pane-title metadata parsing, is correctly located in Packages/macOS/CmuxRemoteSession/ as a public, independently testable struct with Equatable and Sendable conformance. RemoteTmuxPaneTitleSnapshotKey, a trivial 2-field value type used as a dictionary key, appropriately resides in the app target as small app-level composition glue, which is an allowed case per the review boundaries rules. The two commits in the assessed PR (0a465ce and 4cac7aa) only modify existing files and tests; they do not introduce new domain logic into Sources/. The boundary remediation was completed in commit 18f21f3 ("fix: satisfy remote tmux review boundaries"), which moved the metadata type from Sources/ to the package and created the snapshot key as lightweight app-target glue. ✨ Finishing Touches 💡 2📝 Generate docstrings 💡
🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Greptile SummaryThe PR preserves deliberately assigned tmux pane titles while retaining tmux window names for default hostname titles.
Confidence Score: 5/5The PR appears safe to merge. No blocking failure remains. Important Files Changed
Sequence DiagramsequenceDiagram
participant T as tmux
participant C as Control connection
participant M as Window mirror
T->>C: pane-rectangle snapshot requested
Note over C: Record title revision
T-->>C: live pane-title subscription update
C->>C: Increment live revision
C->>M: Reconcile current title
T-->>C: older pane-rectangle reply
C->>C: Compare live and snapshot revisions
C-->>C: Suppress stale title metadata
C->>M: Reconcile verified topology
Reviews (5): Last reviewed commit: "docs: describe pane title metadata in re..." | Re-trigger Greptile |
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All contributors have signed the CLA ✍️ ✅ |
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Actionable comments posted: 1
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Inline comments:
In `@Sources/RemoteTmuxControlConnection.swift`:
- Around line 900-906: Update handlePaneRectsReply’s pane-set reconciliation to
prune both paneTitleMetadataByPane and paneTitleMetadataLiveRevisionByPane using
the authoritative union of live, pending, and retained pane IDs, not only when a
window closes. Preserve metadata for panes still present in any of those sets
and remove entries for individually closed panes.
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📒 Files selected for processing (18)
.github/scripts/rerun-failed-cla.sh.github/workflows/cla.ymlPackages/macOS/CmuxRemoteSession/Sources/CmuxRemoteSession/RemoteTmux/RemoteTmuxPaneTitleMetadata.swiftPackages/macOS/CmuxRemoteSession/Tests/CmuxRemoteSessionTests/RemoteTmuxPaneTitleMetadataTests.swiftSources/RemoteTmuxConnectionObservers.swiftSources/RemoteTmuxControlConnection+Commands.swiftSources/RemoteTmuxControlConnection+LayoutPublication.swiftSources/RemoteTmuxControlConnection+Observation.swiftSources/RemoteTmuxControlConnection+PaneSubscriptions.swiftSources/RemoteTmuxControlConnection.swiftSources/RemoteTmuxPaneTitleSnapshotKey.swiftSources/RemoteTmuxSessionMirror.swiftSources/RemoteTmuxWindowMirror+Bonsplit.swiftSources/RemoteTmuxWindowMirror+BonsplitLayout.swiftSources/RemoteTmuxWindowMirror.swiftcmux.xcodeproj/project.pbxprojcmuxTests/RemoteTmuxMirrorTargetingTests.swifttests/test_cla_trigger_gate.sh
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…irror-deliberately-set-tmux-pane-titles-no-longe # Conflicts: # .github/scripts/rerun-failed-cla.sh # .github/workflows/cla.yml # tests/test_cla_trigger_gate.sh
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Reviewed: pane titles set in tmux now carry through to the mirror. Stale snapshots can't roll them back, and the caches are pruned. The one failure in the earlier full-suite dispatch ( |
4aa2736 Fix cmux events access-denied stream error (manaflow-ai#10712) f4ff9af ci: never let a focused test run pass after executing zero tests (manaflow-ai#14053) fbaf239 Fix persistent LaunchServices registration from duplicate plist keys (manaflow-ai#12990) 7b1cb4a Fix Hermes gateway with symlinked venv Python (manaflow-ai#12996) b6b2720 ssh-tmux mirror: preserve deliberate pane titles (manaflow-ai#10714) 33edbc7 Fix Cloud VM panel text readability across all terminal themes (manaflow-ai#7538) 30dccd6 fix: prevent detached TUI preferred editor processes (manaflow-ai#10681) 22eec58 Reap disowned shell watchers on parent PID reuse (issue 10926) (manaflow-ai#11035) 0b9b318 ci: start Linux-only jobs beside Fast static checks (manaflow-ai#14181) 9e78d22 ci: one git archive for the trusted router; delete duplicate CI guard tests (manaflow-ai#14199) 20e79e6 feat: load local cmux config packs (manaflow-ai#13356) 224327b ci: download the admission DerivedData seed while packages resolve (manaflow-ai#14184) 886a6f0 ci: run changed suites inside compile admission (manaflow-ai#14182) # Conflicts: # .github/workflows/ci-guards.yml # .github/workflows/ci-macos.yml # .github/workflows/ci.yml # .github/workflows/test-e2e.yml # .github/workflows/test-macos-suite.yml
2 participants
Summary
Preserve deliberately set tmux pane titles on ssh-tmux mirror split surfaces while retaining #7836's window-name authority for default hostname titles.
The mirror now carries
#{pane_title},#{host}, and#{host_short}from the control-mode pane snapshot and a live per-pane subscription. A nonempty pane title that differs from both host defaults becomes the surface/control title; otherwise the tmux window name and deterministic pane suffix remain authoritative.Reproduction
On the remote host:
Attach with
cmux ssh-tmux <host>. The mirrored splits now retainbuild/logsinstead of only<window name> [1]/<window name> [2].Tests
git diff --check, pbxproj normalization check, and test-wiring lint. No local xcodebuild/XCUITest per task constraints.Need help on this PR? Tag
@codesmith-botwith what you need. Autofix is disabled.Summary by cubic
Preserves deliberately set tmux pane titles on ssh-tmux mirrors. Previously panes always showed " [index]"; now mirrors use the pane's intentional title when it differs from tmux's host defaults, live retitles apply immediately, and stale snapshot replies no longer roll titles back.
refresh-clientsubscription.refresh-client; unsubscribes header and title together.trinvocation.Written for commit 157e34c. Summary will update on new commits.
Summary by CodeRabbit
New Features
Bug Fixes
Tests