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FA-100679 / Speculative decoding bookkeeping / Member archive

Decoding: Replacement token is missing from the emitted-token count · case 04

Replacement token is missing from the emitted-token count.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

Output length is accepted draft prefix length plus one replacement token after a rejection.

Why this case matters

A self-contained bookkeeping model makes prefix and token-count semantics observable without a model runtime.

One recorded failure

Sample boundary fixture

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

Boundary fixtureActualExpectedOutcome
partial12Failed

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