Re: [PATCH v8 08/16] rebase-helper --make-script: introduce a flag to rebase merges

> From: "Johannes Schindelin" <johannes.schindelin@gmx.de>
> 
> Sorry for the very late in the series comments..
> 
> > The sequencer just learned new commands intended to recreate branch
> > structure (similar in spirit to --preserve-merges, but with a
> > substantially less-broken design).
> >
> > Let's allow the rebase--helper to generate todo lists making use of
> > these commands, triggered by the new --rebase-merges option. For a
> > commit topology like this (where the HEAD points to C):
> >
> > - A - B - C
> >     \   /
> >       D
> >
> > the generated todo list would look like this:
> >
> > # branch D
> > pick 0123 A
> > label branch-point
> > pick 1234 D
> > label D
> >
> > reset branch-point
> > pick 2345 B
> > merge -C 3456 D # C
> >
> > To keep things simple, we first only implement support for merge commits
> > with exactly two parents, leaving support for octopus merges to a later
> > patch series.
> >
> For the first time reader this (below) isn't as obvious as may be thought.
> maybe we should be a little more explicit here.
> 
> > As a special, hard-coded label, all merge-rebasing todo lists start with
> > the command `label onto`
> 
> .. which labels the start point head with the name 'onto' ...
> 
> Maybe even:
> "All merge-rebasing todo lists start with, as a convenience, a hard-coded
> `label onto` line which will label the start point's head" ...