$ perl text.table.pl
A B C
1 2 3
a c d
b
e f h
  g
i j k
    l
m n o
----------------------------------------
A      B       C
"1"     "2"     "3"
"a\nb"  "c"     "d"
"e"     "f\ng"  "h"
"i"     "j"     "k\nl"
"m"     "n"     "o"