FA-47622 / Delimited text / Member archive

Run-length expansion budgets each run independently · case 02

A structured table violates the declared record or column contract.

Member previewVariant 2 · 3 implementations · 10 checks per implementation

Case contract

Parse a bounded compact comma row. A field count*value expands value count times; fields lacking star occur once. Count is positive ASCII decimal and cumulative width cannot exceed budget. Split at first star; an empty value is valid. Return expanded cells.

Why this case matters

Delimited interchange needs explicit framing, schema and field semantics at ingestion and emission boundaries.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
aggregate limit	`["x", "x", "y", "y"]`	`null`	Failed

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