docs: def _format_table(fmt, headers, rows, colwidths, colaligns):
      """Produce a plain-text representation of the table."""
      lines = []
      hidden = fmt.with_header_hide if (headers and fmt.with_header_hide) else []
      pad = fmt.padding
      headerrow = fmt.headerrow
  
      padded_widths = [(w + 2*pad) for w in colwidths]
      padded_headers = _pad_row(headers, pad)
      padded_rows = [_pad_row(row, pad) for row in rows]
  
      if fmt.lineabove and "lineabove" not in hidden:
          lines.append(_build_line(padded_widths, colaligns, fmt.lineabove))
  
      if padded_headers:
          lines.append(_build_row(padded_headers, padded_widths, colaligns, headerrow))
          if fmt.linebelowheader and "linebelowheader" not in hidden:
              lines.append(_build_line(padded_widths, colaligns, fmt.linebelowheader))
  
      if padded_rows and fmt.linebetweenrows and "linebetweenrows" not in hidden:
          # initial rows with a line below
          for row in padded_rows[:-1]:
              lines.append(_build_row(row, padded_widths, colaligns, fmt.datarow))
              lines.append(_build_line(padded_widths, colaligns, fmt.linebetweenrows))
          # the last row without a line below
          lines.append(_build_row(padded_rows[-1], padded_widths, colaligns, fmt.datarow))
      else:
          for row in padded_rows:
              lines.append(_build_row(row, padded_widths, colaligns, fmt.datarow))
  
      if fmt.linebelow and "linebelow" not in hidden:
          lines.append(_build_line(padded_widths, colaligns, fmt.linebelow))
  
      return "\n".join(lines)