#mediawiki-codesniffer ([[ https://packagist.org/packages/mediawiki/mediawiki-codesniffer | packagist]], [[ https://gerrit.wikimedia.org/r/#/admin/projects/mediawiki/tools/codesniffer | Gerrit ]]) has improved considerably over the last few months and it's probably a good idea to make core pass the codesniffer tests.
[ ] Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed
[ ] Generic.Files.EndFileNewline.NotFound
[ ] Generic.Files.LineLength
[ ] Generic.WhiteSpace.DisallowSpaceIndent.SpacesUsed
[ ] MediaWiki.NamingConventions.PrefixedGlobalFunctions.wfPrefix
[ ] MediaWiki.VariableAnalysis.UnusedGlobalVariables
[ ] MediaWiki.WhiteSpace.SpaceAfterControlStructure.Incorrect
[ ] MediaWiki.WhiteSpace.SpaceyParenthesis.SingleSpaceAfterOpenParenthesis
[ ] MediaWiki.WhiteSpace.SpaceyParenthesis.SingleSpaceBeforeCloseParenthesis
[ ] PSR2.Methods.MethodDeclaration.AbstractAfterVisibility
[ ] PSR2.Methods.MethodDeclaration.StaticBeforeVisibility
[ ] PSR2.Methods.MethodDeclaration.Underscore
[ ] PSR2.Namespaces.NamespaceDeclaration.BlankLineAfter
[ ] Squiz.Classes.ValidClassName.NotCamelCaps
[ ] Squiz.WhiteSpace.ScopeClosingBrace.Indent
[ ] Squiz.WhiteSpace.SemicolonSpacing.Incorrect
[ ] Squiz.WhiteSpace.SuperfluousWhitespace.EmptyLines
After this, T102598 could happen and we could have mediawiki-codesniffer running as a voting jenkins job against master.
The output of mediawiki codesniffer running against core (at 3247aa82027) can be found at P789.
The output against core (at 03c1d480a7d) and ignoring `languages/messages` and `languages/classes` can be found at P815.
You can try this out yourself by running:
`phpcs --standard=vendor/mediawiki/mediawiki-codesniffer/MediaWiki --extensions=php,php5,inc --ignore=vendor,extensions -p .`