How to separate field by specifying the field regex?

[Peng Yu]

Hi,

"abc","a,b","c,d"

For the above case, which has three fields, I would end up with 4
fields if I set FS as ','. I know that I can specify a regex for FS,
but it would be better if I can specify a regex for the fields as well
FS. I don't find such thing in gawk manual. Can somebody let me know
if such thing is available?

Regards,
Peng