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Problem: Local image transfers delete temporary files before terminal programs can read them. Test: Add TerminalLocalImageTransferFileLifetimeTests to check that files remain after executePreparedImageTransfer in a hosted terminal for both drop and paste modes.
Problem: Screenshot drops in v0.64.23 leave Claude Code with a missing file instead of an image attachment. Cause: Text completion cleanup (manaflow-ai#9266) deletes the owned copy when sendText returns, before the terminal program reads it. Fix: Remove immediate cleanup from insertText and insertTextSegments. Owned files now stay until app exit. Rejected transfers are still cleaned up immediately.
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Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review. 📝 WalkthroughWalkthroughThe prepared image transfer no longer uses text-completion cleanup. New serialized terminal tests cover drop and paste transfers and verify that materialized local files remain available and owned after insertion. ChangesImage transfer file lifetime
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Merge Risk: ⚪ Minimal · up to The image-transfer lifetime change has no remaining concrete merge-blocking risk identified in the reviewed scope. 🚥 Pre-merge checks | ✅ 24 | ❌ 1❌ Failed checks (1 warning)
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Inline comments:
In `@cmuxTests/TerminalLocalImageTransferFileLifetimeTests.swift`:
- Line 101: Replace the fixed 50 ms RunLoop delay before findGhosttyNSView(in:)
with polling that repeatedly searches for the hosted view until a generous
deadline, allowing the run loop to progress between attempts; fail the test
explicitly if the view is not found before the deadline.
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Sources/GhosttyNSView+PreparedImageTransfer.swiftcmux.xcodeproj/project.pbxprojcmuxTests/TerminalLocalImageTransferFileLifetimeTests.swift
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Author
Problem: The test waited 50 ms before looking up the terminal view, which is a fixed wall-clock wait. Fix: Use hostedView.surfaceView, which exists as soon as the surface is created, and remove the wait.
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Thanks for tracking this down and sending a fix. #12752 landed a fix for the same bug first and shipped in v0.64.25, so this now conflicts with main and isn't needed. Closing, but the report and your patch helped pin it down. |
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Summary
What changed?
Local image drops and deferred image pastes no longer delete the owned
clipboard-*.pngcopy right after its path is written to the terminal. The copy is removed by the existing quit-time cleanup, as in v0.64.22. Rejected transfers still clean up immediately.Why?
Since v0.64.23, dragging a screenshot into a pane running Claude Code inserts
/var/folders/…/T/clipboard-….pngas plain text instead of[Image #N], and the file is gone a moment later. The inserted path points to a file that no longer exists, so the image cannot be found or attached. Downgrading to v0.64.22 fixes it.Fix terminal file drops being ghosted after pane teardown #10359 copies transient drag images (such as the screenshot thumbnail) into an owned file so the path outlives the drag provider. Fix Dock agent resume across owner rotations #9266 then added cleanup in
executePreparedImageTransferthat deletes that copy as soon assendTextreturns. The program in the terminal reads the path after that, so it finds nothing. Both first shipped in v0.64.23.Testing
How did you test this change?
Tagged Debug build on macOS 26.6 (arm64), using
debug.terminal.simulate_file_dropwithpayload: image_dataand watching$TMPDIR.Before (main
6f118af63b):After: a single-image drop still had its file 3.8 s later, and both files from a two-image drop were still present.
Added
TerminalLocalImageTransferFileLifetimeTests(drop and paste modes), wired intocmuxTests. The test bundle builds withbuild-for-testingandlint-pbxproj-test-wiring.shpasses. I did not run the app-host tests locally since the test host is the untaggedcmux DEV.app.tests_v2/test_terminal_multi_image_drop.pycould not complete locally on either build:simulate_file_dropreturnednot_foundfor the surface of the newly created workspace.What did you verify manually?
Dragged a real screenshot thumbnail into Claude Code 2.1.272 running in the tagged Debug build. Without the fix the prompt got the plain
clipboard-*.pngpath and the file was already gone. With the fix the prompt showed[Image #1].Demo Video
Before (without the fix)
cmux-pr12670-before.mp4
After (with the fix)
cmux-pr12670-after.mov
Notes
Checklist