+ // FIXME: Ideally we'd cache the results of this function so the hook is only run once,
+ // but that breaks the parser tests because they rely on being able to change $wgContLang
+ // mid-request and see that change reflected in the return value of this function.
+ // Which is insane and would never happen during normal MW operation, but is also not
+ // likely to get fixed unless and until we context-ify everything.
+ // See also https://www.mediawiki.org/wiki/Special:Code/MediaWiki/101488#c25275