FA-53893 / Accessibility interaction semantics / Member archive

Repeated hyperlink IDs yield multiple indexed descriptors · case 03

Repeated hyperlink IDs yield multiple indexed descriptors.

Member previewVariant 3 · 3 implementations · 6 checks per implementation

Case contract

Input [text_length,links,offset] where links [id,start,end,url,enabled]. Admit only nonempty URL, enabled and nonempty interval after clamping. Sort by start then shorter interval then input order; dedupe IDs after sorting. Query offset resolves the first matching half-open span, or None. Return [ordered descriptors,hit_id]. URLs remain exact including fragments; IDs are retained even when URL is shared.

Why this case matters

Offline accessibility bridge model with explicit policy; useful for testing semantic API adapters independently of browser implementations.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
contract fixture 4	`[[["a", 0, 2, "early"], ["a", 3, 6, "later"]], "a"]`	`[[["a", 0, 2, "early"]], "a"]`	Failed

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