A feature upgrade that would be useful for csv_read_file/3

Good talking as it gives ideas … i then usually let some time to mature it then write some stuff as for now i am rookie on Prolog as I need to get back to it … moreover i need to think at how i will organize the data i want to play with … in that case a referential linked to thousands of financial instruments with long lists of characteristics to pick on web pages and to be managed on a daily basis … 365 days x 1 000 instruments x tens of daily data per instruments makes a funny challenge …