Merge train: #9639 #9640 #9641 #9643 (+ macOS openpty fix) - #9650
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September 3, 2026 20:38
Hold incomplete ANSI escape prefixes against an explicit 500 ms deadline registered with the event pump. Unrelated loop turns no longer flush early, idle waits no longer flush late, and completing bytes cancel the one-shot.\n\nCover bare Escape under idle and interval-driven schedules plus split and complete arrow sequences on a real PTY.
The reducer scored a full productive only when `old_gen_in_use_bytes` dropped. That number is the sum of the live old blocks' bump offsets, and a non-moving sweep cannot lower it: dead objects go back to the old-gen free list and the block keeps its offset, so only a whole-block release moves it. The unit tests passed because their litter fills blocks that end up entirely dead; every real workload does not. Measured on the compiled claude-code TUI, in a session with 279 collections behind it: two reducer fulls freed 2.37 MB and 0.51 MB while occupancy stood at 93.6 MB with 50 MB already on the old-gen free list, both scored unproductive, and the activity requirement had doubled twice inside a minute of idle. The reducer was switching itself off on exactly the workload it was built for. Price the full by the freed-bytes count the cycle already reports. The occupancy delta stays in the counters and on the diag line as the whole-block-release signal it actually is, next to a new `reusable=` field: the free-list residue that only compaction can return to the OS, which a budgeted (non-moving) cycle cannot do. Claude-Session: https://claude.ai/code/session_011qE5TRRJFzqxN44K34AnG2
…ux — null_mut() coerces on both (#9593 fixture)
This was referenced Sep 3, 2026
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Lands four independent fixes, all cherry-picked clean:
escapeCodeTimeoutinstead of being held indefinitely.One portability fix carried: #9639's new PTY fixture would not have compiled on macOS.
libc::openpty's trailingtermios/winsizeparams are*conston Linux and*muton macOS, and the fixture passedstd::ptr::null(). Nownull_mut()for all three, which coerces on both platforms.Validation:
run_lint_gates.shall 62 gates pass; release build green; RUST_TEST_THREADS=1 perry-runtime 3060/0; perry-stdlib green;issue_9589_idle_reclaim_heap_descendsgreen.Rebase-merge preserving authorship.