Re: [RFC PATCH] rebase: implement --rewind

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On Wed, Apr 05, 2023 at 02:07:29PM +0200, Johannes Schindelin wrote:
This question brings me back to the initial question: What problem do we try to solve here? (This is a question that try as I might, I cannot see answered in the proposed commit message.)

and i, try as i might, don't understand what you're not understanding ...

[...] In other words, I need a nested rebase.

that's just *your* private terminology. i don't apply the term "nested" here, because for me that implies the possibility to "unnest", which my patch doesn't implement. instead, it just continues past the point where the rewind was initiated. it's the difference between a loop and recursion. but outside this difference in terminology, for all i can tell, my patch implements *exactly* what you're asking for, and i don't understand why that's not obvious to you, given how well you understand the problem space yourself. please describe what you want with _a few_ words and without introducing any new terminology first, i.e., something you'd actually want to see in the feature's summary documentation. that should illuminate what keywords you find critical.

i just gave rewinding rebasing merges a shot, and it didn't work for the simple reason that --rebase-merges is not saved in the state (understandably, because that was unnecessary so far) and the combination of --rewind --rebase-merges is being rejected. i'll need to fix that.

then there is the problem that --rebase-merges only redoes merges rather than replaying them. but it seems that the simple case with unmodified parents actually does get replayed (or rather, skipped over, just incredibly slowly), so rewinding to just the last merge would work fine. other than that, i'm declaring the matter out of scope and deferring to your "replaying evil merges" sub-thread.




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