John Keeping <j...@keeping.me.uk> writes:
> Perhaps we shuld do something like this (which passes the test suite):
>
> -- >8 --
> diff --git a/git-rebase.sh b/git-rebase.sh
> index 06c810b..0c6c5d3 100755
> --- a/git-rebase.sh
> +++ b/git-rebase.sh
> @@ -544,7 +544,8 @@ if test "$fork_point" = t
> then
> new_upstream=$(git merge-base --fork-point "$upstream_name" \
> "${switch_to:-HEAD}")
> - if test -n "$new_upstream"
> + if test -n "$new_upstream" &&
> + ! git merge-base --is-ancestor "$new_upstream" "$upstream_name"
> then
> upstream=$new_upstream
> fi
> -- 8< --
>
> Since the intent of `--fork-point` is to find the best starting point
> for the "$upstream...$orig_head" range, if the fork point is behind the
> new location of the upstream then should we leave the upstream as it
> was?
Probably; but the check to avoid giving worse fork-point should be
in the implementation of "merge-base --fork-point" itself, so that
we do not have to do the above to both "rebase" and "pull --rebase",
no?
> I haven't thought through this completely, but it seems like we should
> be doing a check like the above, at least when we're in
> "$fork_point=auto" mode.
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