This file being indexed:
https://doc.wikimedia.org/mediawiki-core/master/php/All__system__messages_8txt.html
Causes all kinds of broken and confusing cross-references from other classes.
For example on https://doc.wikimedia.org/mediawiki-core/master/php/classResourceLoader.html the $name parameter in "getModule ($name)" is linked to this document, and more.
Version: 1.23.0
Severity: normal