FA-31758 / Keyboard interactions / Member archive
Press-time remapping and logical key reference counts: Physical press ownership stores event payload instead of the resolved logical target · case 03
The event trace violates the captured target rule and produces incorrect keyboard state or command output.
Case contract
Events [kind,key,value]. Map replaces future press mapping; None disables output. Down captures current mapping once per physical key. Several physical keys mapping to one logical key share a reference count: emit logical down at 0->1 and up at 1->0. Release uses captured mapping even after remap. Reset emits sorted ups for all logical held keys and clears presses. Return events, captured physical map and logical counts. 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 |
|---|---|---|---|
| remap-release-ownership scenario 2 | [[[["down", "Y"]], [["A", "A"]], [["Y", 1]]], [[["down", "Y"]], [["A", "A"]], [["Y", 1]]], [[["down", "Y"]], [["A", "A"]], [["Y", 1]]]] | [[[["down", "Y"]], [["A", "Y"]], [["Y", 1]]], [[["down", "Y"]], [["A", "Y"]], [["Y", 1]]], [[["down", "Y"]], [["A", "Y"]], [["Y", 1]]]] | Failed |
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