Re: [PATCH] rebase-i: keep old parents when preserving merges

> Stephan Beyer <s-beyer@gmx.net> writes:
> 
> ... Based on the discussion thread, here is a rewrite of the log message.
> 
> > When "rebase -i -p" tries to preserve merges of unrelated branches, it
> > lost some parents:
> >
> >  - When you have more than two parents, the commit in the new history
> >    ends up with fewer than expected number of parents and this breakage
> >    goes unnoticed;
> >
> >  - When you are rebasing a merge with two parents and one is lost, the
> >    command tries to cherry-pick the original merge commit, and the command
> >    fails.
> >
> > Signed-off-by: Stephan Beyer <s-beyer@gmx.net>

> > diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
> > index a35212d..0df7640 100755
> > --- a/git-rebase--interactive.sh
> > +++ b/git-rebase--interactive.sh
> > @@ -174,6 +174,8 @@ pick_one_preserving_merges () {
> >  				new_parents="$new_parents $new_p"
> >  				;;
> >  			esac
> > +		else
> > +			new_parents="$new_parents $p"
> >  		fi
> >  	done
> 
> Reading the surrounding code, it makes me wonder if you also need to futz
> with variables like $preserve and $fast_forward.