existing groups (accessed through $special->getFilterGroup), or create your own
(ChangesListBooleanFilterGroup or ChangesListStringOptionsFilterGroup).
If you create new groups, you must register them with $special->registerFilterGroup.
+
+Note that this is called regardless of whether the user is currently using
+the new (structured) or old (unstructured) filter UI. If you want your boolean
+filter to show on both the new and old UI, specify all the supported fields.
+These include showHide, label, and description.
+
+See the constructor of each ChangesList* class for documentation of supported
+fields.
+
$special: ChangesListSpecialPage instance
'ChangeTagAfterDelete': Called after a change tag has been deleted (that is,
or request state must be added through MakeGlobalVariablesScript instead.
&$vars: array( variable name => value )
-'ResourceLoaderGetLessVars': Called in ResourceLoader::getLessVars after
-variables from $wgResourceLoaderLESSVars are added. Can be used to add
-context-based variables.
+'ResourceLoaderGetLessVars': DEPRECATED! Called in ResourceLoader::getLessVars
+to add global LESS variables. Loaded after $wgResourceLoaderLESSVars is added.
+Global LESS variables are deprecated. Use ResourceLoaderModule::getLessVars()
+instead to expose variables only in modules that need them.
&$lessVars: array of variables already added
'ResourceLoaderJqueryMsgModuleMagicWords': Called in