Merge branch 'km/delete-ref-reflog-message'

"git update-ref -d" and other operations to delete references did
not leave any entry in HEAD's reflog when the reference being
deleted was the current branch.  This is not a problem in practice
because you do not want to delete the branch you are currently on,
but caused renaming of the current branch to something else not to
be logged in a useful way.

* km/delete-ref-reflog-message:
  branch: record creation of renamed branch in HEAD's log
  rename_ref: replace empty message in HEAD's log
  update-ref: pass reflog message to delete_ref()
  delete_ref: accept a reflog message argument

9 files changed, 15 insertions, 14 deletions

diff --git a/builtin/am.c b/builtin/am.c
index 31fb60578f..f7a7a971fb 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -1049,7 +1049,7 @@ static void am_setup(struct am_state *state, enum patch_format patch_format,
 	} else {
 		write_state_text(state, "abort-safety", "");
 		if (!state->rebasing)
-			delete_ref("ORIG_HEAD", NULL, 0);
+			delete_ref(NULL, "ORIG_HEAD", NULL, 0);
 	}
 
 	/*
@@ -2172,7 +2172,7 @@ static void am_abort(struct am_state *state)
 				has_curr_head ? &curr_head : NULL, 0,
 				UPDATE_REFS_DIE_ON_ERR);
 	else if (curr_branch)
-		delete_ref(curr_branch, NULL, REF_NODEREF);
+		delete_ref(NULL, curr_branch, NULL, REF_NODEREF);
 
 	free(curr_branch);
 	am_destroy(state);
diff --git a/builtin/branch.c b/builtin/branch.c
index cbaa6d03c0..94f7de7fa5 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -252,7 +252,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 			goto next;
 		}
 
-		if (delete_ref(name, is_null_sha1(sha1) ? NULL : sha1,
+		if (delete_ref(NULL, name, is_null_sha1(sha1) ? NULL : sha1,
 			       REF_NODEREF)) {
 			error(remote_branch
 			      ? _("Error deleting remote-tracking branch '%s'")
@@ -471,14 +471,15 @@ static void rename_branch(const char *oldname, const char *newname, int force)
 
 	if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
 		die(_("Branch rename failed"));
-	strbuf_release(&logmsg);
 
 	if (recovery)
 		warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);
 
-	if (replace_each_worktree_head_symref(oldref.buf, newref.buf))
+	if (replace_each_worktree_head_symref(oldref.buf, newref.buf, logmsg.buf))
 		die(_("Branch renamed to %s, but HEAD is not updated!"), newname);
 
+	strbuf_release(&logmsg);
+
 	strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
 	strbuf_release(&oldref);
 	strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
diff --git a/builtin/notes.c b/builtin/notes.c
index 5248a9bad8..4b492abd41 100644
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -681,9 +681,9 @@ static int merge_abort(struct notes_merge_options *o)
 	 * notes_merge_abort() to remove .git/NOTES_MERGE_WORKTREE.
 	 */
 
-	if (delete_ref("NOTES_MERGE_PARTIAL", NULL, 0))
+	if (delete_ref(NULL, "NOTES_MERGE_PARTIAL", NULL, 0))
 		ret += error(_("failed to delete ref NOTES_MERGE_PARTIAL"));
-	if (delete_ref("NOTES_MERGE_REF", NULL, REF_NODEREF))
+	if (delete_ref(NULL, "NOTES_MERGE_REF", NULL, REF_NODEREF))
 		ret += error(_("failed to delete ref NOTES_MERGE_REF"));
 	if (notes_merge_abort(o))
 		ret += error(_("failed to remove 'git notes merge' worktree"));
diff --git a/builtin/remote.c b/builtin/remote.c
index 5339ed6ad1..2b415911bf 100644
--- a/builtin/remote.c
+++ b/builtin/remote.c
@@ -691,7 +691,7 @@ static int mv(int argc, const char **argv)
 		read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
 		if (!(flag & REF_ISSYMREF))
 			continue;
-		if (delete_ref(item->string, NULL, REF_NODEREF))
+		if (delete_ref(NULL, item->string, NULL, REF_NODEREF))
 			die(_("deleting '%s' failed"), item->string);
 	}
 	for (i = 0; i < remote_branches.nr; i++) {
@@ -1248,7 +1248,7 @@ static int set_head(int argc, const char **argv)
 			head_name = xstrdup(states.heads.items[0].string);
 		free_remote_ref_states(&states);
 	} else if (opt_d && !opt_a && argc == 1) {
-		if (delete_ref(buf.buf, NULL, REF_NODEREF))
+		if (delete_ref(NULL, buf.buf, NULL, REF_NODEREF))
 			result |= error(_("Could not delete %s"), buf.buf);
 	} else
 		usage_with_options(builtin_remote_sethead_usage, options);
diff --git a/builtin/replace.c b/builtin/replace.c
index b58c714cb8..226d0f9523 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -121,7 +121,7 @@ static int for_each_replace_name(const char **argv, each_replace_name_fn fn)
 static int delete_replace_ref(const char *name, const char *ref,
 			      const unsigned char *sha1)
 {
-	if (delete_ref(ref, sha1, 0))
+	if (delete_ref(NULL, ref, sha1, 0))
 		return 1;
 	printf("Deleted replace ref '%s'\n", name);
 	return 0;
diff --git a/builtin/reset.c b/builtin/reset.c
index 8ab915bfcb..fc3b906c47 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -256,7 +256,7 @@ static int reset_refs(const char *rev, const struct object_id *oid)
 		update_ref_oid(msg.buf, "ORIG_HEAD", orig, old_orig, 0,
 			   UPDATE_REFS_MSG_ON_ERR);
 	} else if (old_orig)
-		delete_ref("ORIG_HEAD", old_orig->hash, 0);
+		delete_ref(NULL, "ORIG_HEAD", old_orig->hash, 0);
 	set_reflog_message(&msg, "updating HEAD", rev);
 	update_ref_status = update_ref_oid(msg.buf, "HEAD", oid, orig, 0,
 				       UPDATE_REFS_MSG_ON_ERR);
diff --git a/builtin/symbolic-ref.c b/builtin/symbolic-ref.c
index 96eed94468..70addef158 100644
--- a/builtin/symbolic-ref.c
+++ b/builtin/symbolic-ref.c
@@ -58,7 +58,7 @@ int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
 			die("Cannot delete %s, not a symbolic ref", argv[0]);
 		if (!strcmp(argv[0], "HEAD"))
 			die("deleting '%s' is not allowed", argv[0]);
-		return delete_ref(argv[0], NULL, REF_NODEREF);
+		return delete_ref(NULL, argv[0], NULL, REF_NODEREF);
 	}
 
 	switch (argc) {
diff --git a/builtin/tag.c b/builtin/tag.c
index e5e2c6a446..ad29be6923 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -97,7 +97,7 @@ static int for_each_tag_name(const char **argv, each_tag_name_fn fn,
 static int delete_tag(const char *name, const char *ref,
 		      const unsigned char *sha1, const void *cb_data)
 {
-	if (delete_ref(ref, sha1, 0))
+	if (delete_ref(NULL, ref, sha1, 0))
 		return 1;
 	printf(_("Deleted tag '%s' (was %s)\n"), name, find_unique_abbrev(sha1, DEFAULT_ABBREV));
 	return 0;
diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index 7f30d3a76f..0b2ecf41ae 100644
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -433,7 +433,7 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
 		 * For purposes of backwards compatibility, we treat
 		 * NULL_SHA1 as "don't care" here:
 		 */
-		return delete_ref(refname,
+		return delete_ref(msg, refname,
 				  (oldval && !is_null_sha1(oldsha1)) ? oldsha1 : NULL,
 				  flags);
 	else