From: Jeff King <peff@xxxxxxxx>
Since 67affd5173 (git-branch -D: make it work even when on a
yet-to-be-born branch, 2006-11-24), 'git branch -d' refuses to work when
orphaned, since there is no HEAD to resolve.
But since 67affd5173, there have been other checks, like 99c419c915
(branch -d: base the "already-merged" safety on the branch it merges
with, 2009-12-29), which makes it OK to delete a branch if it is merged
to HEAD or its upstream.
99c419c915 makes the check in 67affd5173 wrong, since it's OK to delete
a branch if it is merged to its upstream.
Since the code in delete_branches() tolerates a NULL head_rev perfectly
fine, make it non-fatal to fail to resolve a commit object at HEAD.
Signed-off-by: Jeff King <peff@xxxxxxxx>
Signed-off-by: Taylor Blau <me@xxxxxxxxxxxx>
---
OK, here's that patch. Since Peff wrote the main portion of it, he gets
authorship credit. My version comes with a test, which we should
consider picking up.
Even though it doesn't resolve Martin's original scenario (i.e., he'd
still have to use -D or -f to actually delete 'main' there), I still
think the bugfix is worth pursuing in its own right.
builtin/branch.c | 5 +----
t/t3200-branch.sh | 7 +++++++
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/builtin/branch.c b/builtin/branch.c
index 15be0c03ef..f6ff9084c8 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -235,11 +235,8 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
}
branch_name_pos = strcspn(fmt, "%");
- if (!force) {
+ if (!force)
head_rev = lookup_commit_reference(the_repository, &head_oid);
- if (!head_rev)
- die(_("Couldn't look up commit object for HEAD"));
- }
for (i = 0; i < argc; i++, strbuf_reset(&bname)) {
char *target = NULL;
diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index 7f605f865b..464d3f610b 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -279,6 +279,13 @@ test_expect_success 'git branch -M and -C fail on detached HEAD' '
test_cmp expect err
'
+test_expect_success 'git branch -d on detached HEAD' '
+ test_when_finished git checkout main &&
+ git checkout --orphan orphan &&
+ test_must_fail git branch -d main 2>err &&
+ grep "not fully merged" err
+'
+
test_expect_success 'git branch -v -d t should work' '
git branch t &&
git rev-parse --verify refs/heads/t &&
--
2.38.0.16.g393fd4c6db
