built-in rebase --autostash: leave the current branch alone if possible

When we converted a `git reset --hard` call in the original Unix shell script to built-in code, we asked to reset the worktree and the index and explicitly *not* to detach the HEAD. By mistake, though, we still did. Let's fix this. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed Nov 7, 2018 at 06:00 UTC 176f5d965ba128f79a51d6c8d1620506672403e1
2 files changed +3 -2
builtin/rebase.c
+2 -1
@@ -612,7 +612,8 @@ static int reset_head(struct object_id *oid, const char *action,
612 reflog_head = msg.buf;
613 }
614 if (!switch_to_branch)
615 - ret = update_ref(reflog_head, "HEAD", oid, orig, REF_NO_DEREF,
615 + ret = update_ref(reflog_head, "HEAD", oid, orig,
616 + detach_head ? REF_NO_DEREF : 0,
617 UPDATE_REFS_MSG_ON_ERR);
618 else {
619 ret = create_symref("HEAD", switch_to_branch, msg.buf);
t/t3420-rebase-autostash.sh
+1 -1
@@ -361,7 +361,7 @@ test_expect_success 'autostash with dirty submodules' '
361 git rebase -i --autostash HEAD
362 '
363
364 -test_expect_failure 'branch is left alone when possible' '
364 +test_expect_success 'branch is left alone when possible' '
365 git checkout -b unchanged-branch &&
366 echo changed >file0 &&
367 git rebase --autostash unchanged-branch &&