Re: History over-simplification

> These seem like roundabout ways of expressing the requirement.
> The desired rule is "no silent changes in the simplified history".
> E.g. if the revision history of a particular file is:
>
>       +-C-+
>      /     \
> A---B       B---D
>      \     /
>       +-B-+
>
> Then the normal code will notice that there are no changes on the
> lower branch, prune the merge entirely, and simplify to A---B---C---D.
> This is, however, misleading; the true history is A---B---C---B---D.