Merge commit 'fa89acd'

# Conflicts:
#	.gitignore
#	extensions/ArchInterWiki.sql

6 files changed, 103 insertions, 88 deletions

diff --git a/includes/specialpage/ChangesListSpecialPage.php b/includes/specialpage/ChangesListSpecialPage.php
index b9132358..23bd394c 100644
--- a/includes/specialpage/ChangesListSpecialPage.php
+++ b/includes/specialpage/ChangesListSpecialPage.php
@@ -434,7 +434,8 @@ abstract class ChangesListSpecialPage extends SpecialPage {
 			$legend .= Html::element( 'dt',
 				array( 'class' => $cssClass ), $context->msg( $letter )->text()
 			) . "\n" .
-			Html::rawElement( 'dd', array(),
+			Html::rawElement( 'dd',
+				array( 'class' => Sanitizer::escapeClass( 'mw-changeslist-legend-' . $key ) ),
 				$context->msg( $label )->parse()
 			) . "\n";
 		}
diff --git a/includes/specialpage/FormSpecialPage.php b/includes/specialpage/FormSpecialPage.php
index 90567617..42c59806 100644
--- a/includes/specialpage/FormSpecialPage.php
+++ b/includes/specialpage/FormSpecialPage.php
@@ -96,7 +96,11 @@ abstract class FormSpecialPage extends SpecialPage {
 			$this->getMessagePrefix()
 		);
 		$form->setSubmitCallback( array( $this, 'onSubmit' ) );
-		$form->setWrapperLegendMsg( $this->getMessagePrefix() . '-legend' );
+		if ( $this->getDisplayFormat() !== 'ooui' ) {
+			// No legend and wrapper by default in OOUI forms, but can be set manually
+			// from alterForm()
+			$form->setWrapperLegendMsg( $this->getMessagePrefix() . '-legend' );
+		}
 
 		$headerMsg = $this->msg( $this->getMessagePrefix() . '-text' );
 		if ( !$headerMsg->isDisabled() ) {
diff --git a/includes/specialpage/QueryPage.php b/includes/specialpage/QueryPage.php
index 1ff7e3fb..3c8b7420 100644
--- a/includes/specialpage/QueryPage.php
+++ b/includes/specialpage/QueryPage.php
@@ -70,7 +70,7 @@ abstract class QueryPage extends SpecialPage {
 				array( 'DeadendPagesPage', 'Deadendpages' ),
 				array( 'DoubleRedirectsPage', 'DoubleRedirects' ),
 				array( 'FileDuplicateSearchPage', 'FileDuplicateSearch' ),
-				array( 'ListDuplicatedFilesPage', 'ListDuplicatedFiles'),
+				array( 'ListDuplicatedFilesPage', 'ListDuplicatedFiles' ),
 				array( 'LinkSearchPage', 'LinkSearch' ),
 				array( 'ListredirectsPage', 'Listredirects' ),
 				array( 'LonelyPagesPage', 'Lonelypages' ),
@@ -141,7 +141,7 @@ abstract class QueryPage extends SpecialPage {
 	 * @return array
 	 * @since 1.18
 	 */
-	function getQueryInfo() {
+	public function getQueryInfo() {
 		return null;
 	}
 
@@ -178,7 +178,7 @@ abstract class QueryPage extends SpecialPage {
 	 * @return bool
 	 * @since 1.18
 	 */
-	function usesTimestamps() {
+	public function usesTimestamps() {
 		return false;
 	}
 
@@ -198,7 +198,7 @@ abstract class QueryPage extends SpecialPage {
 	 *
 	 * @return bool
 	 */
-	function isExpensive() {
+	public function isExpensive() {
 		return $this->getConfig()->get( 'DisableQueryPages' );
 	}
 
@@ -219,7 +219,7 @@ abstract class QueryPage extends SpecialPage {
 	 *
 	 * @return bool
 	 */
-	function isCached() {
+	public function isCached() {
 		return $this->isExpensive() && $this->getConfig()->get( 'MiserMode' );
 	}
 
@@ -253,6 +253,17 @@ abstract class QueryPage extends SpecialPage {
 	}
 
 	/**
+	 * Outputs some kind of an informative message (via OutputPage) to let the
+	 * user know that the query returned nothing and thus there's nothing to
+	 * show.
+	 *
+	 * @since 1.26
+	 */
+	protected function showEmptyText() {
+		$this->getOutput()->addWikiMsg( 'specialpage-empty' );
+	}
+
+	/**
 	 * If using extra form wheely-dealies, return a set of parameters here
 	 * as an associative array. They will be encoded and added to the paging
 	 * links (prev/next/lengths).
@@ -283,7 +294,7 @@ abstract class QueryPage extends SpecialPage {
 	 * @throws DBError|Exception
 	 * @return bool|int
 	 */
-	function recache( $limit, $ignoreErrors = true ) {
+	public function recache( $limit, $ignoreErrors = true ) {
 		if ( !$this->isCacheable() ) {
 			return 0;
 		}
@@ -359,7 +370,7 @@ abstract class QueryPage extends SpecialPage {
 	 * @return ResultWrapper
 	 * @since 1.18
 	 */
-	function reallyDoQuery( $limit, $offset = false ) {
+	public function reallyDoQuery( $limit, $offset = false ) {
 		$fname = get_class( $this ) . "::reallyDoQuery";
 		$dbr = $this->getRecacheDB();
 		$query = $this->getQueryInfo();
@@ -410,7 +421,7 @@ abstract class QueryPage extends SpecialPage {
 	 * @param int|bool $limit
 	 * @return ResultWrapper
 	 */
-	function doQuery( $offset = false, $limit = false ) {
+	public function doQuery( $offset = false, $limit = false ) {
 		if ( $this->isCached() && $this->isCacheable() ) {
 			return $this->fetchFromCache( $limit, $offset );
 		} else {
@@ -425,7 +436,7 @@ abstract class QueryPage extends SpecialPage {
 	 * @return ResultWrapper
 	 * @since 1.18
 	 */
-	function fetchFromCache( $limit, $offset = false ) {
+	public function fetchFromCache( $limit, $offset = false ) {
 		$dbr = wfGetDB( DB_SLAVE );
 		$options = array();
 		if ( $limit !== false ) {
@@ -460,11 +471,23 @@ abstract class QueryPage extends SpecialPage {
 	}
 
 	/**
+	 * Returns limit and offset, as returned by $this->getRequest()->getLimitOffset().
+	 * Subclasses may override this to further restrict or modify limit and offset.
+	 *
+	 * @since 1.26
+	 *
+	 * @return int[] list( $limit, $offset )
+	 */
+	protected function getLimitOffset() {
+		return $this->getRequest()->getLimitOffset();
+	}
+
+	/**
 	 * This is the actual workhorse. It does everything needed to make a
 	 * real, honest-to-gosh query page.
 	 * @param string $par
 	 */
-	function execute( $par ) {
+	public function execute( $par ) {
 		$user = $this->getUser();
 		if ( !$this->userCanExecute( $user ) ) {
 			$this->displayRestrictionError();
@@ -484,7 +507,7 @@ abstract class QueryPage extends SpecialPage {
 		$out->setSyndicated( $this->isSyndicated() );
 
 		if ( $this->limit == 0 && $this->offset == 0 ) {
-			list( $this->limit, $this->offset ) = $this->getRequest()->getLimitOffset();
+			list( $this->limit, $this->offset ) = $this->getLimitOffset();
 		}
 
 		// @todo Use doQuery()
@@ -527,7 +550,7 @@ abstract class QueryPage extends SpecialPage {
 
 		$this->numRows = $res->numRows();
 
-		$dbr = wfGetDB( DB_SLAVE );
+		$dbr = $this->getRecacheDB();
 		$this->preprocessResults( $dbr, $res );
 
 		$out->addHTML( Xml::openElement( 'div', array( 'class' => 'mw-spcontent' ) ) );
@@ -546,7 +569,7 @@ abstract class QueryPage extends SpecialPage {
 			} else {
 				# No results to show, so don't bother with "showing X of Y" etc.
 				# -- just let the user know and give up now
-				$out->addWikiMsg( 'specialpage-empty' );
+				$this->showEmptyText();
 				$out->addHTML( Xml::closeElement( 'div' ) );
 				return;
 			}
diff --git a/includes/specialpage/RedirectSpecialPage.php b/includes/specialpage/RedirectSpecialPage.php
index 2e6e55a7..5047354e 100644
--- a/includes/specialpage/RedirectSpecialPage.php
+++ b/includes/specialpage/RedirectSpecialPage.php
@@ -33,8 +33,11 @@ abstract class RedirectSpecialPage extends UnlistedSpecialPage {
 	// Query parameters added by redirects
 	protected $mAddedRedirectParams = array();
 
-	public function execute( $par ) {
-		$redirect = $this->getRedirect( $par );
+	/**
+	 * @param string|null $subpage
+	 */
+	public function execute( $subpage ) {
+		$redirect = $this->getRedirect( $subpage );
 		$query = $this->getRedirectQuery();
 		// Redirect to a page title with possible query parameters
 		if ( $redirect instanceof Title ) {
@@ -58,22 +61,24 @@ abstract class RedirectSpecialPage extends UnlistedSpecialPage {
 	 * If the special page is a redirect, then get the Title object it redirects to.
 	 * False otherwise.
 	 *
-	 * @param string $par Subpage string
+	 * @param string|null $subpage
 	 * @return Title|bool
 	 */
-	abstract public function getRedirect( $par );
+	abstract public function getRedirect( $subpage );
 
 	/**
 	 * Return part of the request string for a special redirect page
 	 * This allows passing, e.g. action=history to Special:Mypage, etc.
 	 *
-	 * @return string
+	 * @return array|bool
 	 */
 	public function getRedirectQuery() {
 		$params = array();
 		$request = $this->getRequest();
 
-		foreach ( $this->mAllowedRedirectParams as $arg ) {
+		foreach ( array_merge( $this->mAllowedRedirectParams,
+				array( 'uselang', 'useskin', 'debug' ) // parameters which can be passed to all pages
+			) as $arg ) {
 			if ( $request->getVal( $arg, null ) !== null ) {
 				$params[$arg] = $request->getVal( $arg );
 			} elseif ( $request->getArray( $arg, null ) !== null ) {
@@ -89,6 +94,18 @@ abstract class RedirectSpecialPage extends UnlistedSpecialPage {
 			? $params
 			: false;
 	}
+
+	/**
+	 * Indicate if the target of this redirect can be used to identify
+	 * a particular user of this wiki (e.g., if the redirect is to the
+	 * user page of a User). See T109724.
+	 *
+	 * @since 1.27
+	 * @return bool
+	 */
+	public function personallyIdentifiableTarget() {
+		return false;
+	}
 }
 
 /**
@@ -112,12 +129,16 @@ abstract class SpecialRedirectToSpecial extends RedirectSpecialPage {
 		$this->mAddedRedirectParams = $addedRedirectParams;
 	}
 
+	/**
+	 * @param string|null $subpage
+	 * @return Title|bool
+	 */
 	public function getRedirect( $subpage ) {
 		if ( $this->redirSubpage === false ) {
 			return SpecialPage::getTitleFor( $this->redirName, $subpage );
-		} else {
-			return SpecialPage::getTitleFor( $this->redirName, $this->redirSubpage );
 		}
+
+		return SpecialPage::getTitleFor( $this->redirName, $this->redirSubpage );
 	}
 }
 
@@ -140,11 +161,11 @@ abstract class SpecialRedirectToSpecial extends RedirectSpecialPage {
  * - limit, offset: Useful for linking to history of one's own user page or
  * user talk page. For example, this would be a link to "the last edit to your
  * user talk page in the year 2010":
- * http://en.wikipedia.org/wiki/Special:MyPage?offset=20110000000000&limit=1&action=history
+ * https://en.wikipedia.org/wiki/Special:MyPage?offset=20110000000000&limit=1&action=history
  *
  * - feed: would allow linking to the current user's RSS feed for their user
  * talk page:
- * http://en.wikipedia.org/w/index.php?title=Special:MyTalk&action=history&feed=rss
+ * https://en.wikipedia.org/w/index.php?title=Special:MyTalk&action=history&feed=rss
  *
  * - preloadtitle: Can be used to provide a default section title for a
  * preloaded new comment on one's own talk page.
@@ -159,7 +180,7 @@ abstract class SpecialRedirectToSpecial extends RedirectSpecialPage {
  * - redlink: Affects the message the user sees if their talk page/user talk
  * page does not currently exist. Avoids confusion for newbies with no user
  * pages over why they got a "permission error" following this link:
- * http://en.wikipedia.org/w/index.php?title=Special:MyPage&redlink=1
+ * https://en.wikipedia.org/w/index.php?title=Special:MyPage&redlink=1
  *
  * - debug: determines whether the debug parameter is passed to load.php,
  * which disables reformatting and allows scripts to be debugged. Useful
@@ -198,7 +219,7 @@ abstract class RedirectSpecialArticle extends RedirectSpecialPage {
 			'section', 'oldid', 'diff', 'dir',
 			'limit', 'offset', 'feed',
 			# Misc options
-			'redlink', 'debug',
+			'redlink',
 			# Options for action=raw; missing ctype can break JS or CSS in some browsers
 			'ctype', 'maxage', 'smaxage',
 		);
diff --git a/includes/specialpage/SpecialPage.php b/includes/specialpage/SpecialPage.php
index a7a43b0e..65a4eb9a 100644
--- a/includes/specialpage/SpecialPage.php
+++ b/includes/specialpage/SpecialPage.php
@@ -662,7 +662,6 @@ class SpecialPage {
 	 */
 	public function getFinalGroupName() {
 		$name = $this->getName();
-		$specialPageGroups = $this->getConfig()->get( 'SpecialPageGroups' );
 
 		// Allow overbidding the group from the wiki side
 		$msg = $this->msg( 'specialpages-specialpagegroup-' . strtolower( $name ) )->inContentLanguage();
@@ -671,18 +670,6 @@ class SpecialPage {
 		} else {
 			// Than use the group from this object
 			$group = $this->getGroupName();
-
-			// Group '-' is used as default to have the chance to determine,
-			// if the special pages overrides this method,
-			// if not overridden, $wgSpecialPageGroups is checked for b/c
-			if ( $group === '-' && isset( $specialPageGroups[$name] ) ) {
-				$group = $specialPageGroups[$name];
-			}
-		}
-
-		// never give '-' back, change to 'other'
-		if ( $group === '-' ) {
-			$group = 'other';
 		}
 
 		return $group;
@@ -697,8 +684,16 @@ class SpecialPage {
 	 * @since 1.21
 	 */
 	protected function getGroupName() {
-		// '-' used here to determine, if this group is overridden or has a hardcoded 'other'
-		// Needed for b/c in getFinalGroupName
-		return '-';
+		return 'other';
+	}
+
+	/**
+	 * Call wfTransactionalTimeLimit() if this request was POSTed
+	 * @since 1.26
+	 */
+	protected function useTransactionalTimeLimit() {
+		if ( $this->getRequest()->wasPosted() ) {
+			wfTransactionalTimeLimit();
+		}
 	}
 }
diff --git a/includes/specialpage/SpecialPageFactory.php b/includes/specialpage/SpecialPageFactory.php
index dedfcb6a..e794a5df 100644
--- a/includes/specialpage/SpecialPageFactory.php
+++ b/includes/specialpage/SpecialPageFactory.php
@@ -218,7 +218,7 @@ class SpecialPageFactory {
 		global $wgSpecialPages;
 		global $wgDisableInternalSearch, $wgEmailAuthentication;
 		global $wgEnableEmail, $wgEnableJavaScriptTest;
-		global $wgPageLanguageUseDB;
+		global $wgPageLanguageUseDB, $wgContentHandlerUseDB;
 
 		if ( !is_array( self::$list ) ) {
 
@@ -244,6 +244,9 @@ class SpecialPageFactory {
 			if ( $wgPageLanguageUseDB ) {
 				self::$list['PageLanguage'] = 'SpecialPageLanguage';
 			}
+			if ( $wgContentHandlerUseDB ) {
+				self::$list['ChangeContentModel'] = 'SpecialChangeContentModel';
+			}
 
 			self::$list['Activeusers'] = 'SpecialActiveUsers';
 
@@ -260,14 +263,13 @@ class SpecialPageFactory {
 	}
 
 	/**
-	 * Initialise and return the list of special page aliases.  Returns an object with
-	 * properties which can be accessed $obj->pagename - each property name is an
-	 * alias, with the value being the canonical name of the special page. All
-	 * registered special pages are guaranteed to map to themselves.
-	 * @return object
+	 * Initialise and return the list of special page aliases. Returns an array where
+	 * the key is an alias, and the value is the canonical name of the special page.
+	 * All registered special pages are guaranteed to map to themselves.
+	 * @return array
 	 */
-	private static function getAliasListObject() {
-		if ( !is_object( self::$aliases ) ) {
+	private static function getAliasList() {
+		if ( is_null( self::$aliases ) ) {
 			global $wgContLang;
 			$aliases = $wgContLang->getSpecialPageAliases();
 			$pageList = self::getPageList();
@@ -310,9 +312,6 @@ class SpecialPageFactory {
 					}
 				}
 			}
-
-			// Cast to object: func()[$key] doesn't work, but func()->$key does
-			self::$aliases = (object)self::$aliases;
 		}
 
 		return self::$aliases;
@@ -332,8 +331,9 @@ class SpecialPageFactory {
 
 		$caseFoldedAlias = $wgContLang->caseFold( $bits[0] );
 		$caseFoldedAlias = str_replace( ' ', '_', $caseFoldedAlias );
-		if ( isset( self::getAliasListObject()->$caseFoldedAlias ) ) {
-			$name = self::getAliasListObject()->$caseFoldedAlias;
+		$aliases = self::getAliasList();
+		if ( isset( $aliases[$caseFoldedAlias] ) ) {
+			$name = $aliases[$caseFoldedAlias];
 		} else {
 			return array( null, null );
 		}
@@ -348,34 +348,6 @@ class SpecialPageFactory {
 	}
 
 	/**
-	 * Add a page to a certain display group for Special:SpecialPages
-	 *
-	 * @param SpecialPage|string $page
-	 * @param string $group
-	 * @deprecated since 1.21 Override SpecialPage::getGroupName
-	 */
-	public static function setGroup( $page, $group ) {
-		wfDeprecated( __METHOD__, '1.21' );
-
-		global $wgSpecialPageGroups;
-		$name = is_object( $page ) ? $page->getName() : $page;
-		$wgSpecialPageGroups[$name] = $group;
-	}
-
-	/**
-	 * Get the group that the special page belongs in on Special:SpecialPage
-	 *
-	 * @param SpecialPage $page
-	 * @return string
-	 * @deprecated since 1.21 Use SpecialPage::getFinalGroupName
-	 */
-	public static function getGroup( &$page ) {
-		wfDeprecated( __METHOD__, '1.21' );
-
-		return $page->getFinalGroupName();
-	}
-
-	/**
 	 * Check if a given name exist as a special page or as a special page alias
 	 *
 	 * @param string $name Name of a special page
@@ -572,7 +544,6 @@ class SpecialPageFactory {
 				$context->setTitle( $page->getPageTitle( $par ) );
 			}
 		} elseif ( !$page->isIncludable() ) {
-
 			return false;
 		}
 
@@ -638,7 +609,7 @@ class SpecialPageFactory {
 	public static function getLocalNameFor( $name, $subpage = false ) {
 		global $wgContLang;
 		$aliases = $wgContLang->getSpecialPageAliases();
-		$aliasList = self::getAliasListObject();
+		$aliasList = self::getAliasList();
 
 		// Find the first alias that maps back to $name
 		if ( isset( $aliases[$name] ) ) {
@@ -646,8 +617,8 @@ class SpecialPageFactory {
 			foreach ( $aliases[$name] as $alias ) {
 				$caseFoldedAlias = $wgContLang->caseFold( $alias );
 				$caseFoldedAlias = str_replace( ' ', '_', $caseFoldedAlias );
-				if ( isset( $aliasList->$caseFoldedAlias ) &&
-					$aliasList->$caseFoldedAlias === $name
+				if ( isset( $aliasList[$caseFoldedAlias] ) &&
+					$aliasList[$caseFoldedAlias] === $name
 				) {
 					$name = $alias;
 					$found = true;