RELEASE-NOTES-1.31

   1 == MediaWiki 1.31 ==
   2
   3 THIS IS NOT A RELEASE YET
   4
   5 MediaWiki 1.31 is an alpha-quality branch and is not recommended for use in
   6 production.
   7
   8 === Configuration changes in 1.31 ===
   9 * $wgEnableAPI and $wgEnableWriteAPI are now deprecated and will be removed in
  10   a future version. The API is now considered to be stable, secure and
  11   essential.
  12 * $wgUsejQueryThree was removed, as it is now the default. This was documented as a
  13   temporary variable during the migration period, deprecated since 1.29.
  14 * $wgLogoHD has been updated to support svg images and uses $wgLogo where
  15   possible for fallback images such as png.
  16 * (T44246) $wgFilterLogTypes will no longer ignore 'patrol' when user does
  17   not have the right to mark things patrolled.
  18 * Wikis that contain imported revisions or CentralAuth global blocks should run
  19   maintenance/cleanupUsersWithNoId.php.
  20 * $wgResourceLoaderMinifierStatementsOnOwnLine and $wgResourceLoaderMinifierMaxLineLength
  21   were removed (deprecated since 1.27).
  22 * (T180921) $wgReferrerPolicy now supports having fallbacks for browsers that are not
  23   using the latest version of the Referrer Policy specification.
  24 * $wgFragmentMode is now set to [ 'legacy', 'html5' ] by default. This is a first step of
  25   migration to human-readable section IDs that will later result in 'html5' being the
  26   default mode.
  27 * CACHE_ACCEL now only supports APC(u) or WinCache. XCache support was removed
  28   as upstream is inactive and has no plans to move to PHP 7.
  29 * The old CategorizedRecentChanges feature, including its related configuration
  30   option $wgAllowCategorizedRecentChanges, has been removed.
  31 * (T188472) The 'comma' value for $wgArticleCountMethod is no longer supported for
  32   performance reasons, and installations with this setting will now work as if it
  33   was configured with 'any'.
  34 * (T185753) MediaWiki now defaults to using RemexHtml to tidy up user input, rather than
  35   being off by default. If you wish to disable HTML tidying entirely, set $wgTidyConfig
  36   to null; if you wish to use the old, deprecated Tidy external binary, both
  37   set $wgTidyConfig to null and also set $wgUseTidy to true.
  38 * $wgLogAutopatrol now defaults to false instead of true.
  39 * $wgValidateAllHtml was removed and will be ignored.
  40 * $wgScriptExtension was removed (deprecated and ignored since 1.25).
  41   See 1.25 release notes for more information.
  42
  43 === New features in 1.31 ===
  44 * (T76554) User sub-pages named ….json are now protected in the same way that ….js
  45   and ….css pages are, so that configuration options can safely be placed there.
  46 * Wikimedia\Rdbms\IDatabase->select() and similar methods now support
  47   joins with parentheses for grouping.
  48 * As a first pass in standardizing dialog boxes across the MediaWiki product,
  49   Html class now provides helper methods for messageBox, successBox, errorBox and
  50   warningBox generation.
  51 * (T9240) Imports will now record unknown (and, optionally, known) usernames in
  52   a format like "iw>Example".
  53 * (T20209) Linker (used on history pages, log pages, and so on) will display
  54   usernames formed like "iw>Example" as interwiki links, as if by wikitext like
  55   [[iw:User:Example|iw>Example]].
  56 * (T111605) The 'ImportHandleUnknownUser' hook allows extensions to auto-create
  57   users during an import.
  58 * Added a hook, ParserOutputPostCacheTransform, to allow extensions to affect
  59   the ParserOutput::getText() post-cache transformations.
  60 * Added a hook, UploadForm:getInitialPageText, to allow extensions to alter the
  61   initial page text for file uploads.
  62 * (T181651) The info page for File pages now displays the file's base-16 SHA1
  63   hash value in the table of basic information.
  64 * Style tags with a 'data-mw-deduplicate' attribute will be deduplicated as a
  65   ParserOutput::getText() post-cache transformation. This may be disabled by
  66   passing 'deduplicateStyles' => false to that method.
  67 * The identity of the logged-in or IP "actor" for logged actions is being moved
  68   into a new actor table, with the rows in tables such as revision and logging
  69   referring to the actor ID instead of storing the user ID and name/IP in
  70   every row.
  71   * This is currently gated by $wgActorTableSchemaMigrationStage. Most wikis
  72     can set this to MIGRATION_NEW and run maintenance/migrateActors.php as
  73     soon as any necessary extensions are updated.
  74   * Most code accessing rows for logged actions from the database should use
  75     the relevant getQueryInfo() methods to get the information needed to build
  76     the SQL query. The ActorMigration class may also be used to get feature-flagged
  77     information needed to access actor-related fields during the migration
  78     period.
  79 * Added Wikimedia\Rdbms\IDatabase::cancelAtomic(), to roll back an atomic
  80   section without having to roll back the whole transaction.
  81 * Wikimedia\Rdbms\IDatabase::doAtomicSection(), non-native ::insertSelect(),
  82   and non-MySQL ::replace() and ::upsert() no longer roll back the whole
  83   transaction on failure.
  84 * (T189785) Added a monthly heartbeat ping to the pingback feature.
  85 * The CLI installer (maintenance/install.php) learned to detect and include
  86   extensions. Pass --with-extensions to enable that feature.
  87 * (T184791) rc_patrolled now has three states: "0" for unpatrolled,
  88   "1" for manually patrolled and "2" for autopatrolled actions.
  89 * Extensions can now set their type to "editor" if they provide an editor
  90   or enhance the editing experience.
  91 * Extensions can use a PSR-4 autoloader by setting an "AutoloadNamespaces" property
  92   in extension.json. See
  93   <https://www.mediawiki.org/wiki/Manual:Extension.json/Schema#AutoloadNamespaces>
  94   for more details and an example.
  95
  96 === External library changes in 1.31 ===
  97
  98 ==== Upgraded external libraries ====
  99 * Updated jquery.chosen from v0.9.14 to v1.8.2.
 100 * Updated composer/spdx-licenses from 1.1.4 to
 101   1.3.0 (development dependency).
 102 * Updated nikic/php-parser from 2.1.0 to 3.1.3
 103   (development dependency).
 104 * Updated wikimedia/ip-set from 1.1.0 to 1.2.0.
 105 * Updated wikimedia/relpath from 2.0.0 to 2.1.1.
 106 * Updated wikimedia/running-stat from 1.1.0 to 1.2.0.
 107 * Updated wikimedia/wrappedstring from 2.2.0 to 2.3.0.
 108 * Updated mediawiki/at-ease from 1.1.0 to 1.2.0.
 109 * Updated wikimedia/php-session-serializer from 1.0.4 to 1.0.6.
 110 * Updated wikimedia/remex-html from 1.0.2 to 1.0.3.
 111 * …
 112
 113 ==== New external libraries ====
 114 * Added wikimedia/object-factory 1.0.0
 115 * …
 116
 117 ==== Removed and replaced external libraries ====
 118 * (T17845) The deprecated 'jquery.badge' module was removed.
 119 * The deprecated 'jquery.autoEllipsis' module was removed. Use the CSS
 120   text-overflow property instead.
 121 * The deprecated 'jquery.placeholder' module was removed.
 122 * The deprecated 'jquery.appear' module was removed. Use the
 123   'mediawiki.viewport' module instead.
 124 * The deprecated 'mediawiki.widgets.CategorySelector' module alias was removed.
 125   Use the 'mediawiki.widgets.CategoryMultiselectWidget' module directly instead.
 126 * mediawiki/at-ease was replaced with wikimedia/at-ease.
 127
 128 === Bug fixes in 1.31 ===
 129 * (T90902) Non-breaking space in header ID breaks anchor
 130
 131 === Action API changes in 1.31 ===
 132 * (T185058) The 'name' value to tgprop for action=query&list=tags has been
 133   removed. It has never made a difference in the output, the name was always
 134   returned regardless.
 135
 136 === Action API internal changes in 1.31 ===
 137 * ApiBase::getProfileDBTime was removed (deprecated since 1.25)
 138 * ApiBase::getModuleProfileName was removed (deprecated since 1.25)
 139 * ApiBase::getProfileTime was removed (deprecated since 1.25)
 140
 141 === Languages updated in 1.31 ===
 142 MediaWiki supports over 350 languages. Many localisations are updated
 143 regularly. Below only new and removed languages are listed, as well as
 144 changes to languages because of Phabricator reports.
 145
 146 * (T180052) Mirandese (mwl) now supports gendered NS_USER/NS_USER_TALK namespaces.
 147 * (T182305) New language support: Nyungar (nys).
 148 * (T186359) New language support: Siberian Tatar [cебертатар] (sty).
 149 * (T186635) New language support: Guianan Creole (gcr).
 150 * (T186647) New language support: Kumyk [къумукъ] (kum).
 151 * (T187750) New language support: Spanish formal address (es-formal).
 152 * (T187824) New language support: Hungarian formal address (hu-formal).
 153
 154 === Breaking changes in 1.31 ===
 155 * MessageBlobStore::insertMessageBlob() (deprecated in 1.27) was removed.
 156 * The OutputPage class constructor now requires a context parameter,
 157   (instantiating without context was deprecated in 1.18)
 158 * The mw.page JavaScript singleton (deprecated in 1.30) was removed.
 159 * Article::getLastPurgeTimestamp(), WikiPage::getLastPurgeTimestamp(), and the
 160   related WikiPage::PURGE_* constants, deprecated in 1.29, were removed.
 161 * The Article::selectFields(), Article::onArticleCreate(),
 162   Article::onArticleDelete(), and Article::onArticleEdit() methods, deprecated
 163   in 1.24, were removed.
 164 * Installer::locateExecutable() and Installer::locateExecutableInDefaultPaths()
 165   were removed, use ExecutableFinder::findInDefaultPaths() instead.
 166 * The deprecated MW_DIFF_VERSION constant was removed.
 167   DifferenceEngine::MW_DIFF_VERSION should be used instead.
 168 * Due to significant refactoring, method ContribsPager::getUserCond() that had
 169   no access restriction has been removed.
 170 * The Block class will no longer accept usable-but-missing usernames for
 171   'byText' or ->setBlocker(). Callers should either ensure the blocker exists
 172   locally or use a new interwiki-format username like "iw>Example".
 173 * The following methods and constants from the WatchedItem class, which were deprecated in
 174   1.27, have been removed.
 175   * WatchedItem::getTitle()
 176   * WatchedItem::fromUserTitle()
 177   * WatchedItem::addWatch()
 178   * WatchedItem::removeWatch()
 179   * WatchedItem::isWatched()
 180   * WatchedItem::duplicateEntries()
 181   * WatchedItem::IGNORE_USER_RIGHTS
 182   * WatchedItem::CHECK_USER_RIGHTS
 183   * WatchedItem::DEPRECATED_USAGE_TIMESTAMP
 184 * The $statementsOnOwnLine parameter of JavaScriptMinifier::minify was removed.
 185   The corresponding configuration variable ($wgResourceLoaderMinifierStatementsOnOwnLine)
 186   has been deprecated since 1.27 and was removed as well.
 187 * The $maxLineLength parameter of JavaScriptMinifier::minify was removed.
 188   The corresponding configuration variable ($wgResourceLoaderMinifierMaxLineLength)
 189   has been deprecated since 1.27 and was removed as well.
 190 * The HtmlFormatter class was removed (deprecated in 1.27). The namespaced
 191   HtmlFormatter\HtmlFormatter class should be used instead.
 192 * The driver 'mysql' for MySQL, deprecated in MediaWiki 1.30, has been removed.
 193   The driver has been deprecated since PHP 5.5 and was removed in PHP 7.0. The
 194   default driver for MySQL has been 'mysqli' since MediaWiki 1.22.
 195 * The following properties of PreparedEdit were deprecated in 1.21 and have been removed:
 196   * PreparedEdit->newText
 197   * PreparedEdit->oldText
 198   * PreparedEdit->pst
 199 * ParserOutput objects generated using a non-default value for
 200   ParserOptions::setWrapOutputClass() can no longer be added to the parser cache.
 201 * The following deprecated methods from the OutputPage class have been removed:
 202   * OutputPage::addExtensionStyle(); deprecated in 1.27
 203   * OutputPage::getExtStyle(); deprecated in 1.27
 204   * OutputPage::setETag(); deprecated in 1.28 (obsolete no-op)
 205   * OutputPage::setSquidMaxage(); deprecated in 1.27
 206   * OutputPage::readOnlyPage(); deprecated in 1.25
 207   * OutputPage::rateLimited(); deprecated in 1.25
 208   * Additionally, the protected OutputPage::$mExtStyles array, only accessed through
 209     the above and with no known uses, was removed.
 210 * The no-op method Skin::showIPinHeader(), deprecated in 1.27, was removed.
 211 * The following variables and methods in EditPage, deprecated in MediaWiki 1.30, were removed:
 212   * $isCssJsSubpage — use ::isUserConfigPage()
 213   * $isCssSubpage — use ::isUserCssConfigPage()
 214   * $isJsSubpage — use ::isUserJsConfigPage()
 215   * $isWrongCaseCssJsPage – use ::isWrongCaseUserConfigPage()
 216   * ::getSummaryInput() – use ::getSummaryInputWidget()
 217   * ::getSummaryInputOOUI() – use ::getSummaryInputWidget()
 218   * ::getCheckboxes() – use ::getCheckboxesWidget() or ::getCheckboxesDefinition()
 219   * ::getCheckboxesOOUI() – use ::getCheckboxesWidget() or ::getCheckboxesDefinition()
 220 * The method ResourceLoaderModule::getPosition(), deprecated in 1.29, has been removed.
 221 * In User, the cookie-related methods which were wrappers for the functions on the response
 222   object, and were deprecated in 1.27, have been removed:
 223   * ::setCookie()
 224   * ::clearCookie()
 225   * ::setExtendedLoginCookie()
 226   Note that User::setCookies() remains, and is not deprecated.
 227 * Also in User, some auth-related methods which were deprecated in 1.27, have been removed:
 228   * ::getEditTokenTimestamp() – use MediaWiki\Session\Token::getTimestamp()
 229   * ::getPasswordFactory() – create a PasswordFactory directly
 230   * ::passwordChangeInputAttribs()
 231 * The global functions wfProfileIn and wfProfileOut, deprecated in 1.25, have been removed.
 232 * SpecialPageFactory::getList(), deprecated in 1.24, has been removed. You can
 233   use ::getNames() instead.
 234 * OpenSearch::getOpenSearchTemplate(), deprecated in 1.25, has been removed. You
 235   can use ApiOpenSearch::getOpenSearchTemplate() instead.
 236 * The global function wfBaseConvert, deprecated in 1.27, has been removed. Use
 237   Wikimedia\base_convert() directly.
 238 * Calling Database::begin() explicitly during an implicit transaction or when DBO_TRX
 239   is set results in an exception. Calling Database::commit() explicitly for an implicit
 240   transaction also results in an exception. Previously these were logged as errors.
 241   The startAtomic() and endAtomic() methods, or AtomicSectionUpdate should be used
 242   instead.
 243 * The global function wfOutputHandler() was removed, use the its replacement
 244   MediaWiki\OutputHandler::handle() instead. The global function was only sometimes defined.
 245   Its replacement is always available via the autoloader.
 246 * ChangeTags::listExtensionActivatedTags and ::listExtensionDefinedTags, deprecated
 247   in 1.28, have been removed.  Use ::listSoftwareActivatedTags() and
 248   ::listSoftwareDefinedTags() instead.
 249 * Title::getTitleInvalidRegex(), deprecated in 1.25, has been removed. You
 250   can use MediaWikiTitleCodec::getTitleInvalidRegex() instead.
 251 * HTMLForm & VFormHTMLForm::isVForm(), deprecated in 1.25, have been removed.
 252 * The ProfileSection class, deprecated in 1.25 and unused, has been removed.
 253 * The ResourceLoaderGetLessVars hook, deprecated in 1.30, has been removed.
 254   Use ResourceLoaderModule::getLessVars() to expose local variables instead
 255   of global ones.
 256 * As part of work to modernise user-generated content clean-up, a config option and some
 257   methods related to HTML validity were removed without deprecation. The public methods
 258   MWTidy::checkErrors() and its callee TidyDriverBase::validate() are removed, as are
 259   MediaWikiTestCase::assertValidHtmlSnippet() and ::assertValidHtmlDocument(). The
 260   $wgValidateAllHtml configuration option is removed and will be ignored.
 261 * Execution of external programs using MediaWiki\Shell\Command now applies RESTRICT_DEFAULT
 262   Firejail restriction by default.
 263 * The ResourceLoaderModule::getHashMtime() and ::getDefinitionMtime() methods,
 264   deprecated in 1.26, were removed.
 265
 266 === Deprecations in 1.31 ===
 267 * The Revision class was deprecated in favor of RevisionStore, BlobStore, and
 268   RevisionRecord and its subclasses.
 269 * The global function wfBCP47 is deprecated in favour of LanguageCode::bcp47.
 270 * The global function wfCountDown is now deprecated in favor of Maintenance::countDown.
 271 * Several methods for returning lists of fields to select from the database
 272   have been deprecated in favor of similar methods that also return the tables
 273   to select from and the join conditions for those tables.
 274   * Block::selectFields() → Block::getQueryInfo()
 275   * RecentChange::selectFields() → RecentChange::getQueryInfo()
 276   * ArchivedFile::selectFields() → ArchivedFile::getQueryInfo()
 277   * LocalFile::selectFields() → LocalFile::getQueryInfo()
 278   * LocalFile::getCacheFields() with a prefix no longer works
 279   * LocalFile::getLazyCacheFields() with a prefix no longer works
 280   * OldLocalFile::selectFields() → OldLocalFile::getQueryInfo()
 281   * RecentChange::selectFields() → RecentChange::getQueryInfo()
 282   * Revision::userJoinCond() → Revision::getQueryInfo( [ 'user' ] )
 283   * Revision::selectUserFields() → Revision::getQueryInfo( [ 'user' ] )
 284   * Revision::pageJoinCond() → Revision::getQueryInfo( [ 'page' ] )
 285   * Revision::selectPageFields() → Revision::getQueryInfo( [ 'page' ] )
 286   * Revision::selectTextFields() → Revision::getQueryInfo( [ 'text' ] )
 287   * Revision::selectFields() → Revision::getQueryInfo()
 288   * Revision::selectArchiveFields() → Revision::getArchiveQueryInfo()
 289   * User::selectFields() → User::getQueryInfo()
 290   * WikiPage::selectFields() → WikiPage::getQueryInfo()
 291 * Revision::setUserIdAndName() was deprecated.
 292 * Access to TitleValue class properties was deprecated, the relevant getters
 293   should be used instead.
 294 * DifferenceEngine::getDiffBodyCacheKey() is deprecated. Subclasses should
 295   override DifferenceEngine::getDiffBodyCacheKeyParams() instead.
 296 * Use of Maintenance::error( $err, $die ) to exit script was deprecated. Use
 297   Maintenance::fatalError() instead.
 298 * Passing a ParserOptions object to OutputPage::parserOptions() is deprecated.
 299 * The RevisionInsertComplete hook is now deprecated, use RevisionRecordInserted instead.
 300   RevisionInsertComplete is still called, but the second and third parameter will always be null.
 301   Hard deprecation is scheduled for 1.32.
 302 * The following methods that get and set ParserOutput state are deprecated.
 303   Callers should use the new stateless $options parameter to
 304   ParserOutput::getText() instead.
 305   * ParserOptions::getEditSection()
 306   * ParserOptions::setEditSection()
 307   * ParserOutput::getEditSectionTokens()
 308   * ParserOutput::setEditSectionTokens()
 309   * ParserOutput::getTOCEnabled()
 310   * ParserOutput::setTOCEnabled()
 311   * OutputPage::enableSectionEditLinks()
 312   * OutputPage::sectionEditLinksEnabled()
 313   * The public ParserOutput state fields $mTOCEnabled and $mEditSectionTokens are also deprecated.
 314 * License::getLicenses has been deprecated; use License::getLines instead.
 315 * QuickTemplate::setRef() was deprecated in favour of QuickTemplate::set().
 316   Setting template variables by reference allowed violating the principle of data being
 317   immutable once added to the skin template. In practice, this method was not being
 318   used for that. Rather, setRef() existed as memory optimisation for PHP 4.
 319 * QuickTemplate::setTranslator() was deprecated in favour of Skin::msg() parameters.
 320 * MediaWikiI18N::set() was deprecated in favour of Skin::msg() parameters.
 321 * MediaWikiI18N::translate() was deprecated in favour of Skin::msg() or wfMessage().
 322 * Passing false to ParserOptions::setWrapOutputClass() is deprecated. Use the
 323   'unwrap' transform to ParserOutput::getText() instead.
 324 * \ObjectFactory (no namespace) is deprecated, the namespaced \Wikimedia\ObjectFactory
 325   from the wikimedia/object-factory library should be used instead.
 326 * CommentStore::newKey is deprecated. Get an instance from MediaWikiServices instead.
 327 * The following CommentStore methods have had their signatures changed to introduce a $key parameter,
 328   usage of the methods on instances retrieved from CommentStore::newKey will remain unchanged but deprecated:
 329   * CommentStore::getFields
 330   * CommentStore::getJoin
 331   * CommentStore::getComment
 332   * CommentStore::getCommentLegacy
 333   * CommentStore::insert
 334   * CommentStore::insertWithTemplate
 335 * The following methods in Title have been renamed, and the old ones are deprecated:
 336   * Title::getSkinFromCssJsSubpage – use ::getSkinFromConfigSubpage
 337   * Title::isCssOrJsPage – use ::isSiteConfigPage
 338   * Title::isCssJsSubpage – use ::isUserConfigPage
 339   * Title::isCssSubpage – use ::isUserCssConfigPage
 340   * Title::isJsSubpage – use ::isUserJsConfigPage
 341 * The following methods related to caching of half-parsed HTML were deprecated:
 342   * Parser::serializeHalfParsedText()
 343   * Parser::unserializeHalfParsedText()
 344   * Parser::isValidHalfParsedText()
 345   * StripState::getSubState()
 346   * StripState::merge()
 347 * The DeferredStringifier class is deprecated, use Message::listParam() instead.
 348 * The type string for the parameter $lang of DateFormatter::getInstance is
 349   deprecated.
 350 * Wikimedia\Rdbms\SavepointPostgres is deprecated.
 351 * The DO_MAINTENANCE constant is deprecated. RUN_MAINTENANCE_IF_MAIN should be
 352   used instead.
 353 * The function wfShellWikiCmd() has been deprecated, use
 354   MediaWiki\Shell::makeScriptCommand().
 355
 356 === Other changes in 1.31 ===
 357 * Browser support for Internet Explorer 10 was lowered from Grade A to Grade C.
 358 * Browser support for Opera 12 and older was removed. Opera 15+ continues at Grade A.
 359 * Introducing multi-content-revision capability into the storage layer. For details,
 360   see <https://www.mediawiki.org/wiki/Requests_for_comment/Multi-Content_Revisions>.
 361 * The "free" CSS class is now only applied to unbracketed URLs in wikitext. Links
 362   written using square brackets will get the class "text" not "free".
 363 * RFC 157418: Whitespace is trimmed from wikitext headings, wikitext list items,
 364   wikitext table captions, wikitext table headings, wikitext table cells. HTML
 365   headings, HTML list items, HTML table captions, HTML table headings, HTML table cells
 366   will not have this trimming behavior.
 367
 368 == Compatibility ==
 369 MediaWiki 1.31 requires PHP 7.0.0 or later. Although HHVM 3.18.5 or later is supported,
 370 it is generally advised to use PHP 7.0.0 or later for long term support.
 371
 372 MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
 373 but support for them is somewhat less mature. There is experimental support for
 374 Oracle and Microsoft SQL Server.
 375
 376 The supported versions are:
 377
 378 * MySQL 5.5.8 or later
 379 * PostgreSQL 9.2 or later
 380 * SQLite 3.3.7 or later
 381 * Oracle 9.0.1 or later
 382 * Microsoft SQL Server 2005 (9.00.1399)
 383
 384 == Upgrading ==
 385 1.31 has several database changes since 1.30, and will not work without schema
 386 updates. Note that due to changes to some very large tables like the revision
 387 table, the schema update may take quite long (minutes on a medium sized site,
 388 many hours on a large site).
 389
 390 Don't forget to always back up your database before upgrading!
 391
 392 See the file UPGRADE for more detailed upgrade instructions, including
 393 important information when upgrading from versions prior to 1.11.
 394
 395 For notes on 1.30.x and older releases, see HISTORY.
 396
 397 == Online documentation ==
 398 Documentation for both end-users and site administrators is available on
 399 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 400 for pages that explicitly state that their contents are in the public domain):
 401
 402        https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
 403
 404 == Mailing list ==
 405 A mailing list is available for MediaWiki user support and discussion:
 406
 407        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 408
 409 A low-traffic announcements-only list is also available:
 410
 411        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 412
 413 It's highly recommended that you sign up for one of these lists if you're
 414 going to run a public MediaWiki, so you can be notified of security fixes.
 415
 416 == IRC help ==
 417 There's usually someone online in #mediawiki on irc.freenode.net.