FA-54559 / Accessibility interaction semantics / Member archive

Ruby annotations are appended in base-only mode · case 04

Ruby annotations are appended in base-only mode.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Input [segments,mode] where segments [base,annotation,fallback,language,hidden_annotation]. mode is base,annotation,combined. In annotation mode use nonempty visible annotation, otherwise base. Combined adds parenthesized visible annotation only when nonempty and different from base; fallback is markup-only content and never exposed. Return [text,runs] with runs [start,end,language,source], omitting zero-length contributions. Each segment is concatenated without implicit spaces. Combined annotation run includes parentheses. Source is base or annotation. Preserve original strings and language, including empty language.

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 5	`["AB(bee)", [[0, 1, "en", "base"], [1, 2, "en", "base"], [2, 7, "en", "annotation"]]]`	`["AB", [[0, 1, "en", "base"], [1, 2, "en", "base"]]]`	Failed

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