Hmm..my memory was bad. With Text::CSV you pass in the line to parse() while with Text::CVS_XS you pass in the filehandle to getline(). However looking at it I notice that Text::CSV_XS also offers the parse() interface. So I was wrong, they are compatible after all.

However naive code using the parse() interface will break on embedded newlines. If you want to use Text::CSV, then I'd strongly recommend writing your own getline() function, and then using that.