rebase --root: fix amending root commit messages

The code path that triggered that "BUG" really does not want to run without an explicit commit message. In the case where we want to amend a commit message, we have an *implicit* commit message, though: the one of the commit to amend. Therefore, this code path should not even be entered. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed Jun 16, 2018 at 21:00 UTC 76fda6ebbc721e39ed70625206ba1dab5a9c1340
2 files changed +2 -2
sequencer.c
+1 -1
@@ -784,7 +784,7 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts,
784 struct child_process cmd = CHILD_PROCESS_INIT;
785 const char *value;
786
787 - if (flags & CREATE_ROOT_COMMIT) {
787 + if ((flags & CREATE_ROOT_COMMIT) && !(flags & AMEND_MSG)) {
788 struct strbuf msg = STRBUF_INIT, script = STRBUF_INIT;
789 const char *author = is_rebase_i(opts) ?
790 read_author_ident(&script) : NULL;
t/t3404-rebase-interactive.sh
+1 -1
@@ -971,7 +971,7 @@ test_expect_success 'rebase -i --root fixup root commit' '
971 test 0 = $(git cat-file commit HEAD | grep -c ^parent\ )
972 '
973
974 -test_expect_failure 'rebase -i --root reword root commit' '
974 +test_expect_success 'rebase -i --root reword root commit' '
975 test_when_finished "test_might_fail git rebase --abort" &&
976 git checkout -b reword-root-branch master &&
977 set_fake_editor &&