I'll clarify what I meant: 1. if submitters squash their commits into one by default, it's hard to split, if the maintainer wants; 2. if they send separate co

I'll clarify what I meant: 1. if submitters squash their commits into one by default, it's hard to split, if the maintainer wants; 2. if they send separate commits by default, it takes only one extra click to the maintainer to squash them, if they want. So, the second case is more flexible.