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Repeated Range fields combine their member lists under one unit · case 02

Repeated Range fields combine their member lists under one unit.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

Parsed fields are [unit,members]. Return [unit,joined-members] when every unit matches first; mixed units return None; no fields returns None. Units already normalized.

Why this case matters

Range responses combine representation identity, conditional requests, framing, and partial-object state.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
range-field-combination fixture 0	`["bytes", ["0-2"]]`	`["bytes", ["0-2", "8-9"]]`	Failed

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