Comment 1 for bug 1393472

Any system for auto-detecting the delimiter would need to have a confirmation screen to make sure it has detected the delimiter correctly. Since that would require an extra page-load and extra click anyway, I think it would be better to simply copy Moodle and have an option for the user to say "semicolon" or "comma".

Or if we wanted to get fancy, have some Javascript attached to the file upload form, which examines the file, guesses the delimiter, and ticks the appropriate box on the form.