Then, your next question would be, for sure, 'And if one country were to join?'. My answer is that this would be another piece of analysis, which has already been done in the previous post.
To conclude, unless there is a major change in the essential parameters driving the current stance of both France and its allies, Eurocorps won't be committed in Mali.
France is to stay alone in Mali
Eurocorps, avant-garde of a European Army