# 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