This file discusses misc tricky issues related to replacing aliases, operators etc and in which order. Order of replacing alias, operators etc Approaches Update operators first License expression MIT OR GPL 2.0 or later update op MIT OR GPL 2.0 or later update expr MIT OR GPL-2.0-only OR later Status Fail License expression MIT&&GPLv2 update op MIT AND GPLv2 update expr MIT AND GPL-2.0-only Status OK The examples above show that updating operators first and then expressions does not work. Expression first approach License expression MIT OR GPL 2.0 or later update expr MIT OR GPL-2.0-or-later update op MIT OR GPL-2.0-or-later Status OK License expression MIT&&GPLv2 update expr MIT&&GPLv2 update op MIT AND GPLv2 Status Fail The examples above show that updating expressions first and then operators does not work.