FA-32120 / Keyboard interactions / Member archive
Asynchronous keyboard capture grant lifecycle: A new granted keyboard capture accumulates stale keys or captures no requested keys · case 05
The event trace violates the grant replace rule and produces incorrect keyboard state or command output.
Case contract
Events [kind,id,keys]. Initial window is focused. Request replaces pending id and deduplicated requested keys while focused. Grant applies only to current pending id while focused, filters Escape from captured keys, replaces active grant and clears pending. Deny clears only matching pending. Blur clears pending and active; focus restores eligibility; release clears both. Return focused flag, pending [id,keys] or None and active keys. Inputs are finite ordered event traces; return the stated deterministic state. Batch entries are independent. N varies the number of independent input transactions.
Why this case matters
Controlled keyboard event processing model for debugging application event logic.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| keyboard-lock scenario 5 | [[true, null, ["A", "B"]], [true, null, ["A", "B"]], [true, null, ["A", "B"]], [true, null, ["A", "B"]], [true, null, ["A", "B"]]] | [[true, null, ["B"]], [true, null, ["B"]], [true, null, ["B"]], [true, null, ["B"]], [true, null, ["B"]]] | Failed |
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