Jeff King <p...@peff.net> writes:
> I wonder if you can
> define the weight as a recursive function of the parents.
I do not think we can. A merge Z between X (that has N commits
behind it) and Y (that has M commits behind it) has at most N+M+1
commits behind it (counting itself), but we cannot tell how many
among these N and M are shared.
> That would double-count "A" and "B" in this example. But maybe there is
> a clever way to define it that avoids that.
We've dealt with this issue long time ago when we optimized the
bisection count, which involves exactly the same issue.
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