tests/1110-csv-write

   1 --tsv --csv
   2 1       2002    3
   3         1
   4 1       "2,0,0,2"       3
   5 1       ,       3
   6 ---
   7 1,2002,3
   8 ,1,
   9 1,"""2,0,0,2""",3
  10 1,",",3