PHP Notice: compact(): Undefined variable: messages in /usr/share/mediawiki/includes/cache/localisation/LocalisationCache.php on line 531 PHP Notice: compact(): Undefined variable: minimumGroupingDigits in /usr/share/mediawiki/includes/cache/localisation/LocalisationCache.php on line 531 PHP Notice: compact(): Undefined variable: digitGroupingPattern in /usr/share/mediawiki/includes/cache/localisation/LocalisationCache.php on line 531 PHP Notice: compact(): Undefined variable: pluralRules in /usr/share/mediawiki/includes/cache/localisation/LocalisationCache.php on line 531 PHP Notice: compact(): Undefined variable: pluralRuleTypes in /usr/share/mediawiki/includes/cache/localisation/LocalisationCache.php on line 531 PHP Notice: compact(): Undefined variable: compiledPluralRules in /usr/share/mediawiki/includes/cache/localisation/LocalisationCache.php on line 531
In PHP 7.3, compact now emits a notice if the variable is undefined.
This was caught by Debian's autopkgtest CI system.