FA-53477 / Accessibility interaction semantics / Member archive

Single-line accessible value retains line breaks · case 02

Single-line accessible value retains line breaks.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Input [raw,protected,reveal,permission,readonly,multiline,max_length,placeholder]. Raw is a string; max_length is None or nonnegative. Normalize CRLF before applying codepoint cap. In single line replace LF with space. Protected text reveals only when reveal and permission; otherwise one bullet per capped codepoint excluding LF, which is retained. Empty values retain empty text and expose placeholder separately. Return {text,placeholder,length,editable,protected}; length is the length after cap, editable is not readonly, protected reports input flag even when revealed.

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
single line cap	`{"editable": true, "length": 3, "placeholder": "", "protected": false, "text": "A\nB"}`	`{"editable": true, "length": 3, "placeholder": "", "protected": false, "text": "A B"}`	Failed

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