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text_columns: raise a clear error for a negative gutter - #2088
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andersonhc merged 3 commits intoOct 30, 2026
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text_columns(ncols=2, gutter=-20)laid out overlapping columns (10-115 and 95-200 on A4), so the text of one column was printed on top of the other. It now raisesValueError: 'gutter' parameter must be equal or greater than 0, likencolsbelow 1.CHANGELOG.md