FA-48068 / Delimited text / Member archive

Record span offsets count characters instead of UTF-8 bytes · case 03

A structured table violates the declared record or column contract.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

For UTF-8 text with LF-delimited physical records, report each record as [text,start_byte,end_byte,line_number]. LF is excluded from text and end offset; a final LF does not add a phantom record. Empty interior records remain. Leading BOM is ordinary text here.

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
unicode	`[["\u00e9", 0, 1, 1], ["cellcellcell", 2, 14, 2]]`	`[["\u00e9", 0, 2, 1], ["cellcellcell", 3, 15, 2]]`	Failed

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