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Trailing blank lines at the end of a CSV/TSV file produce a header/data length mismatch error which, especially for large files, gives no clue that the offending line is simply blank. Since #2146 (issue #1535), the skip-trivial-records verb is an opt-in way to have such lines skipped -- but users hitting the error had no pointer to it. Now, when the mismatching input line is blank, the CSV and TSV readers append a hint to the error message: mlr: CSV header/data length mismatch 2 != 1 at filename tmp.csv row 4; this input line is blank -- use the skip-trivial-records verb to have blank input lines skipped Errors for genuinely ragged, non-blank lines are unchanged, as is all non-error behavior. Also adds a note to the CSV/JSON troubleshooting docs page about trailing blank lines and skip-trivial-records. Addresses #1572. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> |
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Please see ../README-docs.md.