Copies of 3rd party files under a custom license should not be unintentionally matched by the header text in COPYING.
Examples
- lib/resources/vendor/vue2.common.prod.js (after 522038)
- [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikibaseLexeme/+/master/resources/vendor/ | resources/vendor/ ]] (Lexeme)