pack-objects: drop packlist index_pos optimization

diff --git a/t/t3430-rebase-merges.sh b/t/t3430-rebase-merges.sh
index f0814d5280c6755ad1f9f8378a6a32d32ffaee1d..7b6c4847ad6b0993bc192f53dec4671edfdf7f91 100755 (executable)
--- a/t/t3430-rebase-merges.sh
+++ b/t/t3430-rebase-merges.sh
@@ -164,6 +164,19 @@ test_expect_success 'failed `merge <branch>` does not crash' '
        grep "^Merge branch ${SQ}G${SQ}$" .git/rebase-merge/message
 '
 
+test_expect_success 'fast-forward merge -c still rewords' '
+       git checkout -b fast-forward-merge-c H &&
+       (
+               set_fake_editor &&
+               FAKE_COMMIT_MESSAGE=edited \
+                       GIT_SEQUENCE_EDITOR="echo merge -c H G >" \
+                       git rebase -ir @^
+       ) &&
+       echo edited >expected &&
+       git log --pretty=format:%B -1 >actual &&
+       test_cmp expected actual
+'
+
 test_expect_success 'with a branch tip that was cherry-picked already' '
        git checkout -b already-upstream master &&
        base="$(git rev-parse --verify HEAD)" &&