.. SPDX-License-Identifier: GPL-3.0-or-later ===================== License configuration ===================== This controls formatting of license headers. The schema is defined as:: { str: str } The key specifies language ID or file extension. The value accepts a format string. The format string permits at most one ``{}`` substitution placeholder, which is replaced with ``SPDX-License-Identifier: id``. If no placeholder is present, the identifier is appended to the tail, prefixed with a space if necessary.