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Refresh managed tmux commands after reconnect - #16493
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Merge Risk: ⚪ Minimal · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage | Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 2 files. | Write docstrings for the functions missing them to satisfy the coverage threshold. |
✅ Passed checks (24 passed)
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Check name Status Explanation Title check ✅ Passed The title clearly and concisely describes the primary change: refreshing managed tmux commands after reconnect. Description check ✅ Passed The description includes the required Summary, Testing, Changelog, Demo Video, and Checklist sections. It explains the problem, resulting behavior, test coverage, and the known SwiftPM test limitation… Linked Issues check ✅ Passed The PR meets the coding objective in [ #12936]. For an existing session,RemoteTmuxSessionCommandBuilderreadsdefault-commandand refreshes it when it containsCMUX_PERSISTENT_PTY_EXEC_HELPERor…Out of Scope Changes check ✅ Passed The changes stay within [ #12936]. The source change refreshes managed tmux commands during reconnect. The test changes provide coverage and fake-tmux behavior for that refresh and its failure path. No…Cmux Cloud Persistent Session And Early Input ✅ Passed PASS: The pull request changes only the remote tmux session command builder and its tests. It refreshes a managed tmux default-commandbeforeattach-session. The diff does not change Cloud termina…Cmux Swift Actor Isolation ✅ Passed PASS. The production diff adds only three shell-command string literals inside the existing remoteShellCommandimplementation. It adds no@MainActor,Sendablereference type, protocol, async/bac…Cmux Swift Blocking Runtime ✅ Passed PASS. The production diff only adds generated shell commands to read and conditionally refresh a tmux option. It adds no Swift semaphore, blocking wait, sleep, delayed dispatch, polling loop, main-que… Cmux Browser Automation Off-Main ✅ Passed PASS: The PR changes only RemoteTmuxSessionCommandBuilder.swiftand its tests. The diff adds tmuxshow-options/set-optionhandling and contains nobrowser.*command, WebKit/AppKit access, sock…Cmux Expensive Synchronous Load ✅ Passed PASS. The only production change adds remote tmux show-optionsand conditionalset-optioncommands toRemoteTmuxSessionCommandBuilder.remoteShellCommand. It does not add or move an agent-history…Cmux Cache Substitution Correctness ✅ Passed The production diff adds a direct tmux show-optionsread of the session'sdefault-commandand conditionally writes it withset-option. It does not replace an authoritative read with a cache or o…Cmux No Hacky Sleeps ✅ Passed PASS: The pull request changes only Swift source and Swift tests. It adds tmux command inspection and option refresh logic, with no fixed sleeps, delayed dispatch, timers, polling, or wall-clock waits… Cmux Algorithmic Complexity ✅ Passed PASS. The production diff adds one tmux show-optionscall and one shellcasecheck during reconnect. It adds no nested collection scan, per-target rescan, sorting, filtering, or in-memory join. Th…Cmux Swift Concurrency ✅ Passed PASS: The pull request adds synchronous shell-command strings in RemoteTmuxSessionCommandBuilderand XCTest coverage. The Swift diff introduces noDispatchQueue,DispatchGroup, Combine state, co…Cmux Swift @Concurrent✅ Passed The changed Swift code is synchronous. RemoteTmuxSessionCommandBuilder.remoteShellCommandremains a synchronous computed property, and the added tests are synchronousthrowsfunctions. The diff ad…Cmux Swift Package Boundaries ✅ Passed The production change is in Packages/macOS/CmuxFoundation/Sources/CmuxFoundation, not in the app target.CmuxFoundationis an existing SwiftPM library target with a dedicatedCmuxFoundationTests…Cmux Swiftpm Lockfiles ✅ Passed PASS. The pull request changes only Packages/macOS/CmuxFoundationsource and test files. It does not changePackage.swift,Package.resolved,.gitignore, workflows, or Xcode package references.…Cmux Swift Logging ✅ Passed The runtime diff adds tmux command construction and suppresses tmux stderr during refresh. It adds no print,debugPrint,dump,NSLog,Logger, file logging, or diagnostic output in production…Cmux User-Facing Error Privacy ✅ Passed PASS — The production path reaches cmux users through the remote terminal bootstrap used by cmux mosh-tmuxand reconnects. The addedshow-optionsdiagnostic is redirected to/dev/null, and the m…Cmux Full Internationalization ✅ Passed PASS — The production diff adds only tmux shell commands, cmux environment markers, and protocol/config tokens. It adds no user-facing Swift text, catalog entry, web UI text, metadata, or rendered con… Cmux Swiftui State Layout ✅ Passed PASS: The diff changes only RemoteTmuxSessionCommandBuilder.swiftand its tests. These files contain no SwiftUI import, view, ObservableObject/@published state, GeometryReader, lazy/list row store r…Cmux Architecture Rethink ✅ Passed PASS. The PR adds a local refresh in the existing reconnect/attach path. It reads the tmux session's default-command, checks the cmux-managed markers, and updates that same session option from `shel…Cmux Swift Auxiliary Window Close Shortcuts ✅ Passed PASS. The PR changes only RemoteTmuxSessionCommandBuilder.swift and its tests. The diff adds tmux command handling and test fixtures, not NSWindow, NSPanel, NSWindowController, SwiftUI Window, WindowG… Cmux Source Artifacts ✅ Passed The diff changes only two intentional repository paths: one hand-written Swift source file and one Swift test file under Packages/macOS/CmuxFoundation. The changes add reconnect logic and regression…Cmux No Test Or Debug Seam In Production Source ✅ Passed PASS: The only changed production Swift file adds reconnect command behavior inside RemoteTmuxSessionCommandBuilder.remoteShellCommand. The diff adds no#if DEBUGor other test-build guard, no deb…
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Inline comments:
Review comments at
@Packages/macOS/CmuxFoundation/Sources/CmuxFoundation/RemoteTmuxSessionCommandBuilder.swift:
- Around line 38-40: Add a test for the existing-session script generated by
RemoteTmuxSessionCommandBuilder that makes the fake tmux return a failure for
set-option. Assert that the script returns tmux’s failure status and does not
invoke attach-session.
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Rebased onto current main at 14a1193; scoped diff check is clean. Parked while hosted CI reruns for exact-head attribution. |
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Closing in the 10-13 stale sweep: parked stale/conflicting work has no approved classic merge path. Reopen if still wanted. |
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…nt, tmux refresh, worktree seed) (#21674) * test: cover the Cloud rescue review follow-ups - a padded checkpoint id still clears its pane's pending Feed decision - Cloud notifications use every remote workspace showing the terminal - a failed tmux default-command refresh explains itself on stderr - a worktree-seed link that climbs through a missing component escapes Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix: address the Cloud rescue review follow-ups - Clear a closed pane's Feed decisions once, from the panel host, with the checkpoint id trimmed (#16317 review). - Place Cloud notifications by every remote workspace that shows the terminal, the same rule mirrored agent hooks use (#16178 review). - Print cmux's own message when refreshing a reattached tmux session's shell command fails, keeping tmux's diagnostic off the client (#16493 review). - Refuse a worktree-seed link whose target steps back up through a missing component, and fix the resolver's doc comment (#21627 review). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Fixes #12936.
When cmux reconnects to an existing remote tmux session, it rebinds the current relay environment but leaves the session's cmux-managed
default-commandunchanged. User-created panes can therefore keep launching through a deleted relay rcfile and lose the normal login-shell PATH.The reconnect command now reads the existing default command and refreshes it only when it contains cmux's managed helper or integration markers. User-authored tmux defaults remain untouched. Added a regression test proving a stale managed command is replaced before attach, while the existing test continues to cover preservation of unrecognized options.
Testing
python3 scripts/verify-local.py --affected mf/maingit diff --checkChangelog
Remote tmux user-created panes regain the current cmux shell integration after reconnect instead of retaining a stale relay rcfile.
Demo Video
Not included. The reconnect command and guarded option update are covered by deterministic command-builder tests.
Checklist
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@codesmith-botwith what you need. Autofix is disabled.Summary by cubic
Fixes #12936 so reconnecting to an existing remote tmux session refreshes a stale cmux-managed
default-command, keeping user-created panes on the current shell integration instead of a deleted relay rcfile.default-commandand resets it only when it contains cmux's managed helper or shell integration markers; a failed refresh aborts before attach with remote diagnostics suppressed.Written for commit d77e389. Summary will update on new commits.
Summary by CodeRabbit