Merge branch 'np/maint-safer-pack'

[git.git] / git-filter-branch.sh

diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index 182822a24e214fe7e93a2df68fdda3dd40b5896d..2871a59e3280584a2620a67f53e2e28dc808dac0 100755 (executable)
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -361,9 +361,17 @@ do
        ;;
        $_x40)
                echo "Ref '$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 $ref"
+                       fi
+               fi
        ;;
        *)
                # NEEDSWORK: possibly add -Werror, making this an error
@@ -408,15 +416,17 @@ if [ "$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" | \