> The 200 character limitation must concern the case when niimgs are
> numpy arrays. If niimgs is a filename then I'd like to have the full
> filename and not a truncated version (path to dataset files can be very
> long sometimes). I think we should put the number of characters as an
> option of repr_niimgs and use it only when it's not a numpy array.

OK. However, do you think that we need an extra option? Can't repr_niimgs
figure this out by itself?

Anyhow, I think that I'd like a different PR for that.