Merge remote-tracking branch 'github/master' into git-po-master

* github/master: (42 commits)
  Git 2.30-rc1
  git-gui: use gray background for inactive text widgets
  Another batch before 2.30-rc1
  git-gui: Fix selected text colors
  Makefile: conditionally include GIT-VERSION-FILE
  git-gui: fix colored label backgrounds when using themed widgets
  config.mak.uname: remove old NonStop compatibility settings
  diff: correct interaction between --exit-code and -I<pattern>
  t/perf: fix test_export() failure with BSD `sed`
  style: do not "break" in switch() after "return"
  compat-util: pretend that stub setitimer() always succeeds
  strmap: make callers of strmap_remove() to call it in void context
  doc: mention Python 3.x supports
  index-format.txt: document v2 format of file system monitor extension
  docs: multi-pack-index: remove note about future 'verify' work
  init: provide useful advice about init.defaultBranch
  get_default_branch_name(): prepare for showing some advice
  branch -m: allow renaming a yet-unborn branch
  init: document `init.defaultBranch` better
  t7900: use --fixed-value in git-maintenance tests
  ...

4 files changed, 20 insertions, 10 deletions

diff --git a/builtin/branch.c b/builtin/branch.c
index 173b736dff..9b68591add 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -538,7 +538,9 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 		strbuf_addf(&logmsg, "Branch: renamed %s to %s",
 			    oldref.buf, newref.buf);
 
-	if (!copy && rename_ref(oldref.buf, newref.buf, logmsg.buf))
+	if (!copy &&
+	    (!head || strcmp(oldname, head) || !is_null_oid(&head_oid)) &&
+	    rename_ref(oldref.buf, newref.buf, logmsg.buf))
 		die(_("Branch rename failed"));
 	if (copy && copy_existing_ref(oldref.buf, newref.buf, logmsg.buf))
 		die(_("Branch copy failed"));
diff --git a/builtin/clone.c b/builtin/clone.c
index a0841923cf..e335734b4c 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -1293,8 +1293,11 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 				break;
 			}
 
-		if (!is_local && !complete_refs_before_fetch)
-			transport_fetch_refs(transport, mapped_refs);
+		if (!is_local && !complete_refs_before_fetch) {
+			err = transport_fetch_refs(transport, mapped_refs);
+			if (err)
+				goto cleanup;
+		}
 
 		remote_head = find_ref_by_name(refs, "HEAD");
 		remote_head_points_at =
@@ -1323,7 +1326,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		remote_head = NULL;
 		option_no_checkout = 1;
 		if (!option_bare) {
-			const char *branch = git_default_branch_name();
+			const char *branch = git_default_branch_name(0);
 			char *ref = xstrfmt("refs/heads/%s", branch);
 
 			install_branch_config(0, branch, remote_name, ref);
@@ -1339,8 +1342,11 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 
 	if (is_local)
 		clone_local(path, git_dir);
-	else if (refs && complete_refs_before_fetch)
-		transport_fetch_refs(transport, mapped_refs);
+	else if (refs && complete_refs_before_fetch) {
+		err = transport_fetch_refs(transport, mapped_refs);
+		if (err)
+			goto cleanup;
+	}
 
 	update_remote_refs(refs, mapped_refs, remote_head_points_at,
 			   branch_top.buf, reflog_msg.buf, transport,
@@ -1367,6 +1373,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	junk_mode = JUNK_LEAVE_REPO;
 	err = checkout(submodule_progress);
 
+cleanup:
 	free(remote_name);
 	strbuf_release(&reflog_msg);
 	strbuf_release(&branch_top);
diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index d2e33f5005..0a60356b06 100644
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -923,7 +923,6 @@ static struct commit *get_commit(struct rev_cmdline_entry *e, char *full_name)
 		if (!tag)
 			die("Tag %s points nowhere?", e->name);
 		return (struct commit *)tag;
-		break;
 	}
 	default:
 		return NULL;
diff --git a/builtin/init-db.c b/builtin/init-db.c
index 01bc648d41..dcc45bef51 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -202,7 +202,8 @@ void initialize_repository_version(int hash_algo, int reinit)
 static int create_default_files(const char *template_path,
 				const char *original_git_dir,
 				const char *initial_branch,
-				const struct repository_format *fmt)
+				const struct repository_format *fmt,
+				int quiet)
 {
 	struct stat st1;
 	struct strbuf buf = STRBUF_INIT;
@@ -267,7 +268,7 @@ static int create_default_files(const char *template_path,
 		char *ref;
 
 		if (!initial_branch)
-			initial_branch = git_default_branch_name();
+			initial_branch = git_default_branch_name(quiet);
 
 		ref = xstrfmt("refs/heads/%s", initial_branch);
 		if (check_refname_format(ref, 0) < 0)
@@ -438,7 +439,8 @@ int init_db(const char *git_dir, const char *real_git_dir,
 	validate_hash_algorithm(&repo_fmt, hash);
 
 	reinit = create_default_files(template_dir, original_git_dir,
-				      initial_branch, &repo_fmt);
+				      initial_branch, &repo_fmt,
+				      flags & INIT_DB_QUIET);
 	if (reinit && initial_branch)
 		warning(_("re-init: ignored --initial-branch=%s"),
 			initial_branch);