Function create_branch

branch.c:596–650

}

void create_branch(struct repository *r,
		   const char *name, const char *start_name,
		   int force, int clobber_head_ok, int reflog,
		   int quiet, enum branch_track track, int dry_run)
{
	struct object_id oid;
	char *real_ref;
	struct strbuf ref = STRBUF_INIT;
	int forcing = 0;
	struct ref_transaction *transaction;
	struct strbuf err = STRBUF_INIT;
	int flags = 0;
	char *msg;

	if (track == BRANCH_TRACK_OVERRIDE)
		BUG("'track' cannot be BRANCH_TRACK_OVERRIDE. Did you mean to call dwim_and_setup_tracking()?");
	if (clobber_head_ok && !force)
		BUG("'clobber_head_ok' can only be used with 'force'");

	if (clobber_head_ok ?
			  validate_branchname(name, &ref) :
			  validate_new_branchname(name, &ref, force)) {
		forcing = 1;
	}

	dwim_branch_start(r, start_name, track, &real_ref, &oid);
	if (dry_run)
		goto cleanup;

	if (reflog)
		flags |= REF_FORCE_CREATE_REFLOG;

	if (forcing)
		msg = xstrfmt("branch: Reset to %s", start_name);
	else
		msg = xstrfmt("branch: Created from %s", start_name);
	transaction = ref_store_transaction_begin(get_main_ref_store(the_repository),
						  0, &err);
	if (!transaction ||
		ref_transaction_update(transaction, ref.buf,
					&oid, forcing ? NULL : null_oid(the_hash_algo),
					NULL, NULL, flags, msg, &err) ||
		ref_transaction_commit(transaction, &err))
		die("%s", err.buf);
	ref_transaction_free(transaction);
	strbuf_release(&err);
	free(msg);

	if (real_ref && track)
		setup_tracking(ref.buf + 11, real_ref, track, quiet);

cleanup:
	strbuf_release(&ref);
	free(real_ref);
}

void dwim_and_setup_tracking(struct repository *r, const char *new_ref,
			     const char *orig_ref, enum branch_track track,