Extend index to save more flags

diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index a140337e3558888f625f9656f7c21ea25f64d8be..81392add0b852f51f63a470727c33e0c306260d8 100755 (executable)
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -232,11 +232,11 @@ mkdir ../map || die "Could not create map/ directory"
 case "$filter_subdir" in
 "")
        git rev-list --reverse --topo-order --default HEAD \
-               --parents "$@"
+               --parents --simplify-merges "$@"
        ;;
 *)
        git rev-list --reverse --topo-order --default HEAD \
-               --parents "$@" -- "$filter_subdir"
+               --parents --simplify-merges "$@" -- "$filter_subdir"
 esac > ../revs || die "Could not get the commits"
 commits=$(wc -l <../revs | tr -d " ")
 
@@ -326,7 +326,8 @@ then
        do
                sha1=$(git rev-parse "$ref"^0)
                test -f "$workdir"/../map/$sha1 && continue
-               ancestor=$(git rev-list -1 $ref -- "$filter_subdir")
+               ancestor=$(git rev-list --simplify-merges -1 \
+                               $ref -- "$filter_subdir")
                test "$ancestor" && echo $(map $ancestor) >> "$workdir"/../map/$sha1
        done < "$tempdir"/heads
 fi
@@ -411,15 +412,17 @@ if [ "$filter_tag_name" ]; then
                echo "$ref -> $new_ref ($sha1 -> $new_sha1)"
 
                if [ "$type" = "tag" ]; then
-                       new_sha1=$(git cat-file tag "$ref" |
+                       new_sha1=$( ( printf 'object %s\ntype commit\ntag %s\n' \
+                                               "$new_sha1" "$new_ref"
+                               git cat-file tag "$ref" |
                                sed -n \
                                    -e "1,/^$/{
-                                         s/^object .*/object $new_sha1/
-                                         s/^type .*/type commit/
-                                         s/^tag .*/tag $new_ref/
+                                         /^object /d
+                                         /^type /d
+                                         /^tag /d
                                        }" \
                                    -e '/^-----BEGIN PGP SIGNATURE-----/q' \
-                                   -e 'p' |
+                                   -e 'p' ) |
                                git mktag) ||
                                die "Could not create new tag object for $ref"
                        if git cat-file tag "$ref" | \