@Test
public void diffBlobs() throws Exception {
add("file.txt", "a\\nb");
add("file.txt", "c\\nb");
final List<AbbreviatedObjectId> ids = new ArrayList<AbbreviatedObjectId>();
CommitDiffFilter filter = new CommitDiffFilter() {
public boolean include(RevCommit commit, Collection<DiffEntry> diffs) {
for (DiffEntry diff : diffs)
ids.add(diff.getNewId());
return true;