OPTIONS_SPEC=
. git-sh-setup
-git diff-files --quiet &&
+if [ "$(is_bare_repository)" = false ]; then
+ git diff-files --quiet &&
git diff-index --cached --quiet HEAD -- ||
die "Cannot rewrite branch(es) with a dirty working directory."
+fi
tempdir=.git-rewrite
filter_env=
;;
*)
git rev-list --reverse --topo-order --default HEAD \
- --parents --full-history "$@" -- "$filter_subdir"
+ --parents "$@" -- "$filter_subdir"
esac > ../revs || die "Could not get the commits"
commits=$(wc -l <../revs | tr -d " ")
# In case of a subdirectory filter, it is possible that a specified head
# is not in the set of rewritten commits, because it was pruned by the
-# revision walker. Fix it by mapping these heads to the next rewritten
-# ancestor(s), i.e. the boundaries in the set of rewritten commits.
+# revision walker. Fix it by mapping these heads to the unique nearest
+# ancestor that survived the pruning.
-# NEEDSWORK: we should sort the unmapped refs topologically first
-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 $ref --boundary --stdin |
- sed -n "s/^-//p")
+if test "$filter_subdir"
+then
+ while read ref
do
- map $p >> "$workdir"/../map/$sha1
- done
-done < "$tempdir"/heads
+ sha1=$(git rev-parse "$ref"^0)
+ test -f "$workdir"/../map/$sha1 && continue
+ ancestor=$(git rev-list -1 $ref -- "$filter_subdir")
+ test "$ancestor" && echo $(map $ancestor) >> "$workdir"/../map/$sha1
+ done < "$tempdir"/heads
+fi
# Finally update the refs
;;
$_x40)
echo "Ref '$ref' was rewritten"
- git update-ref -m "filter-branch: rewrite" \
- "$ref" $rewritten $sha1 ||
- die "Could not rewrite $ref"
+ if ! git update-ref -m "filter-branch: rewrite" \
+ "$ref" $rewritten $sha1 2>/dev/null; then
+ if test $(git cat-file -t "$ref") = tag; then
+ if test -z "$filter_tag_name"; then
+ warn "WARNING: You said to rewrite tagged commits, but not the corresponding tag."
+ warn "WARNING: Perhaps use '--tag-name-filter cat' to rewrite the tag."
+ fi
+ else
+ die "Could not rewrite $ref"
+ fi
+ fi
;;
*)
# NEEDSWORK: possibly add -Werror, making this an error
echo "$ref -> $new_ref ($sha1 -> $new_sha1)"
if [ "$type" = "tag" ]; then
- # Warn that we are not rewriting the tag object itself.
- warn "unreferencing tag object $sha1t"
+ new_sha1=$(git cat-file tag "$ref" |
+ sed -n \
+ -e "1,/^$/{
+ s/^object .*/object $new_sha1/
+ s/^type .*/type commit/
+ s/^tag .*/tag $new_ref/
+ }" \
+ -e '/^-----BEGIN PGP SIGNATURE-----/q' \
+ -e 'p' |
+ git mktag) ||
+ die "Could not create new tag object for $ref"
+ if git cat-file tag "$ref" | \
+ grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1
+ then
+ warn "gpg signature stripped from tag object $sha1t"
+ fi
fi
git update-ref "refs/tags/$new_ref" "$new_sha1" ||
trap - 0
-unset GIT_DIR GIT_WORK_TREE GIT_INDEX_FILE
-test -z "$ORIG_GIT_DIR" || GIT_DIR="$ORIG_GIT_DIR" && export GIT_DIR
-test -z "$ORIG_GIT_WORK_TREE" || GIT_WORK_TREE="$ORIG_GIT_WORK_TREE" &&
- export GIT_WORK_TREE
-test -z "$ORIG_GIT_INDEX_FILE" || GIT_INDEX_FILE="$ORIG_GIT_INDEX_FILE" &&
- export GIT_INDEX_FILE
-git read-tree -u -m HEAD
+if [ "$(is_bare_repository)" = false ]; then
+ unset GIT_DIR GIT_WORK_TREE GIT_INDEX_FILE
+ test -z "$ORIG_GIT_DIR" || {
+ GIT_DIR="$ORIG_GIT_DIR" && export GIT_DIR
+ }
+ test -z "$ORIG_GIT_WORK_TREE" || {
+ GIT_WORK_TREE="$ORIG_GIT_WORK_TREE" &&
+ export GIT_WORK_TREE
+ }
+ test -z "$ORIG_GIT_INDEX_FILE" || {
+ GIT_INDEX_FILE="$ORIG_GIT_INDEX_FILE" &&
+ export GIT_INDEX_FILE
+ }
+ git read-tree -u -m HEAD
+fi
exit $ret