Lab Case · Blocked

An unclosed quote that changes how later CSV rows parse

One missing quotation mark can make the parser consume later commas and line breaks as part of the wrong field.

Reproducible fixture
Issue: missing quoteOutcome: repair blockedSecondary symptom: row width

Fixture

name,price,sku
"Blue Shirt,19.99,SKU-001
Red Shirt,24.50,SKU-002

What the parser sees

The first data row begins a quoted field at "Blue Shirt but never closes it. Once a quoted field is open, a comma or newline can legally be part of that field. The parser therefore cannot safely assume that the next physical line starts a new record.

Why a column error may appear too

Because the quote changes record boundaries, the parsed row can also have fewer fields than the three-column header. That width mismatch is useful evidence, but adding a missing comma would treat the symptom rather than the cause.

Upload unchanged fixture

The report should include a quote parser error and structural side effects.

Inspect the source record

Determine whether the quote was accidental or whether the field was supposed to contain punctuation or a line break.

Edit only the proven mistake

Balance or escape the quotation mark using the original data as the reference.

Re-run both checks

Confirm the quote error and any row-width error disappear together.

Decision: CSVFixLab reports the location but does not insert a closing quote automatically.