* Add information about user group membership to Special:Preferences

RELEASE-NOTES

@@ -129,6 +129,7 @@ it from source control: http://www.mediawiki.org/wiki/Download_from_SVN
 * Sidebar is now cached for all languages
 * (bug 14259) Localisation message for upload button on Special:Import is now
   'import-upload' instead of 'upload'
+* Add information about user group membership to Special:Preferences
 
 === Bug fixes in 1.13 ===
 

includes/SpecialPreferences.php

@@ -603,9 +603,44 @@ class PreferencesForm {
 			$this->tableRow( Xml::element( 'h2', null, wfMsg( 'prefs-personal' ) ) )
 		);
 
+		# Get groups to which the user belongs
+		$userEffectiveGroups = $wgUser->getEffectiveGroups();
+		$userEffectiveGroupsArray = array();
+		foreach( $userEffectiveGroups as $ueg ) {
+			if( $ueg == '*' ) {
+				// Skip the default * group, seems useless here
+				continue;
+			}
+			$msgName = 'group-' . $ueg;
+			$groupName = wfMsg( $msgName );
+			if( wfEmptyMsg( $msgName, $groupName ) ) {
+				// No localized groupname available
+				$groupName = $ueg;
+			}
+			$userEffectiveGroupsArray[] = $groupName;
+		}
+		asort( $userEffectiveGroupsArray );
+
+		$sk = $wgUser->getSkin();
+		$toolLinks = array();
+		$toolLinks[] = $sk->makeKnownLinkObj( SpecialPage::getTitleFor( 'ListGroupRights' ), wfMsg( 'listgrouprights' ) );
+		if( $wgUser->isAllowed( 'userrights' ) ) {
+			$toolLinks[] = $sk->makeKnownLinkObj( SpecialPage::getTitleFor( 'Userrights' ),
+						wfMsg( 'prefs-changemembership' ),
+						'user=' . htmlspecialchars( $wgUser->getName() )
+					);
+		}
+
 		$userInformationHtml =
 			$this->tableRow( wfMsgHtml( 'username' ), htmlspecialchars( $wgUser->getName() ) ) .
 			$this->tableRow( wfMsgHtml( 'uid' ), htmlspecialchars( $wgUser->getId() ) ) .
+
+			$this->tableRow(
+				wfMsgExt( 'prefs-memberingroups', array( 'parseinline' ), count( $userEffectiveGroupsArray ) ),
+				implode( wfMsg( 'comma-separator' ), $userEffectiveGroupsArray ) . 
+				'<br />(' . implode( ' | ', $toolLinks ) . ')'
+			) .
+
 			$this->tableRow(
 				wfMsgHtml( 'prefs-edits' ),
 				$wgLang->formatNum( User::edits( $wgUser->getId() ) )

languages/messages/MessagesDe.php

@@ -557,6 +557,8 @@ Dein Benutzerkonto wurde eingerichtet. Vergiss nicht, deine Einstellungen anzupa
 'youremail'                  => 'E-Mail-Adresse:',
 'username'                   => 'Benutzername:',
 'uid'                        => 'Benutzer-ID:',
+'prefs-memberingroups'       => 'Mitglied der {{PLURAL:$1|Benutzergruppe|Benutzergruppen}}:',
+'prefs-changemembership'     => 'Benutzerrechte ändern',
 'yourrealname'               => 'Echter Name:',
 'yourlanguage'               => 'Sprache der Benutzeroberfläche:',
 'yourvariant'                => 'Variante',

languages/messages/MessagesEn.php

@@ -872,6 +872,8 @@ Please choose a different name.',
 'youremail'                  => 'E-mail:',
 'username'                   => 'Username:',
 'uid'                        => 'User ID:',
+'prefs-memberingroups'       => 'Member of {{PLURAL:$1|group|groups}}:',
+'prefs-changemembership'     => 'Change group membership',
 'yourrealname'               => 'Real name:',
 'yourlanguage'               => 'Language:',
 'yourvariant'                => 'Variant:', # only translate this message to other languages if you have to change it

maintenance/language/messages.inc

@@ -387,6 +387,8 @@ $wgMessageStructure = array(
 		'youremail',
 		'username',
 		'uid',
+		'prefs-memberingroups',
+		'prefs-changemembership',
 		'yourrealname',
 		'yourlanguage',
 		'yourvariant',