Re: [RFH] filter-branch: ancestor detection weirdness

> diff --git a/git-filter-branch.sh b/git-filter-branch.sh
> index 182822a..52b2bdf 100755
> --- a/git-filter-branch.sh
> +++ b/git-filter-branch.sh
> @@ -325,15 +325,9 @@ while read ref
>  do
>  	sha1=$(git rev-parse "$ref"^0)
>  	test -f "$workdir"/../map/$sha1 && continue
> -	# Assign the boundarie(s) in the set of rewritten commits
> -	# as the replacement commit(s).
> -	# (This would look a bit nicer if --not --stdin worked.)
> -	for p in $( (cd "$workdir"/../map; ls | sed "s/^/^/") |
> -		git rev-list $ref --boundary --stdin |
> -		sed -n "s/^-//p")
> -	do
> -		map $p >> "$workdir"/../map/$sha1
> -	done
> +	# Assign the first commit not pruned as the replacement.
> +	candidate=$(git rev-list $ref -1 -- "$filter_subdir")