When set, the first row will be considered as part of the left CSV to diff. (When not set, the first row is the header row and will be skipped during the diff. It will always appear in the output.)

When set, the first row will be considered as part of the right CSV to diff. (When not set, the first row is the header row and will be skipped during the diff. It will always appear in the output.)

The field delimiter for reading CSV data on the left. Must be a single character.

The field delimiter for reading CSV data on the right. Must be a single character.

The column indices that uniquely identify a record as a comma separated list of indices, e.g. 0,1,2.

The column indices by which the diff result should be sorted as a comma separated list of indices, e.g. 0,1,2. Records in the diff result that are marked as 'modified' ('delete' and 'add' records that have the same key, but have different content) will always be kept together in the sorted diff result and so won't be sorted independently from each other.