[yp_all]

Post a sample .csv file you believe is too difficult.

I will solve your problem with only UNIX utilities. And I'm sure others will solve it other ways.

Usually I only need sed and tr. Sometimes lex or AWK.

Arguing about something without ever pointing to an example accomplishes nothing; it's just whining.

Post an example.

Thank you.

[josephlord]

It isn't that any particular file is difficult but that the variations that you haven't even thought about might catch you out. It is the deceptive simplicity of the samples that you have at hand that may catch out your code when it hits a different (also simple but different) example in the field.