FA-22195 / Autocomplete interactions / Member archive

Inline completion preview: ghost preview repeats the already typed prefix · case 05

The suffix completion transition produces an incorrect observable state.

Member previewVariant 5 · 3 implementations · 22 checks per implementation

Case contract

An inline ghost suffix is presentation only: it must not alter submitted draft or committed identifier. Prefix-compatible candidates yield only their remaining suffix; preview acceptance materializes the candidate and rejection keeps the draft. A noncollapsed caret selection suppresses ghost text.

Why this case matters

Autocomplete couples draft text, suggestion identity and asynchronous presentation; this bounded lifecycle model isolates one observable interaction defect.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
normal suffix	`"pear"`	`"r"`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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