RELEASE-NOTES-1.33

   1 = MediaWiki 1.33 =
   2
   3 == MediaWiki 1.33.0-PRERELEASE ==
   4
   5 THIS IS NOT A RELEASE YET
   6
   7 MediaWiki 1.33 is an alpha-quality branch and is not recommended for use in
   8 production.
   9
  10 == Upgrading notes for 1.33 ==
  11 1.33 has several database changes since 1.32, and will not work without schema
  12 updates. Note that due to changes to some very large tables like the revision
  13 table, the schema update may take quite long (minutes on a medium sized site,
  14 many hours on a large site).
  15
  16 Don't forget to always back up your database before upgrading!
  17
  18 See the file UPGRADE for more detailed upgrade instructions, including
  19 important information when upgrading from versions prior to 1.11.
  20
  21 Some specific notes for MediaWiki 1.33 upgrades are below:
  22
  23 * Some external link searches will not work correctly until update.php (or
  24   refreshExternallinksIndex.php) is run. These include searches for links using
  25   IP addresses, internationalized domain names, and possibly mailto links.
  26 * If you ran migrateActors.php using an older version of MediaWiki and want to
  27   run your wiki with $wgActorTableSchemaMigrationStage SCHEMA_COMPAT_READ_OLD,
  28   note that log_search rows needed to find revision deletions by target user
  29   were incorrectly deleted. See T215464 for details.
  30
  31 For notes on 1.32.x and older releases, see HISTORY.
  32
  33 === Configuration changes for system administrators in 1.33 ===
  34 ==== New configuration ====
  35 * $wgEnablePartialBlocks – This enables the Partial Blocks feature, which gives
  36   accounts with block permissions the ability to block users, IPs, and IP ranges
  37   from editing specific pages, while allowing them to edit the rest of the wiki.
  38   It is a temporary setting for gradual enablement, current default to `false`,
  39   and will be set to `true` and then removed once initial development completes.
  40
  41 ==== Changed configuration ====
  42 * $wgChangeTagsSchemaMigrationStage (T193868) — This temporary setting, added in
  43   MediaWiki 1.32, now defaults to MIGRATION_NEW instead of MIGRATION_WRITE_BOTH.
  44 * $wgPasswordPolicy – There is a new password policy to check that the account's
  45   password is not in the large blacklist. This is enabled by default for the
  46   built-in user groups bureaucrat, sysop, interface-admin, and bot. To configure
  47   this for other user groups, set the `PasswordNotInLargeBlacklist` flag `true`.
  48 * wgPasswordDefault – There is a new password type configuration using Argon2
  49   password hashing (which requires PHP 7.2 and above). It's designed to resist
  50   timing attacks, and (on systems with PHP 7.3+) GPU hacking; if you configure
  51   argon2 to be used, by default, it will automatically choose the best available
  52   algorithm depending on which version of PHP you have available. To use this,
  53   you can set `$wgPasswordDefault = 'argon2';`.
  54
  55 ==== Removed configuration ====
  56 * $wgTagStatisticsNewTable (T199334) — This temporary setting, added in
  57   MediaWiki 1.32, has now been removed. When loading Special:Tags, MediaWiki
  58   will now always use the `change_tag_def` instead of the `change_tag` table.
  59 * $wgUseTidy, $wgTidyBin, $wgTidyConf, $wgTidyOpts, $wgTidyInternal, and
  60   $wgDebugTidy – These options, all deprecated since 1.26, have now all been
  61   removed, as MediaWiki now always tidies user output. The $wgTidyConfig setting
  62   remains only for experimental features and debugging, and should not be used.
  63 * $wgEnableParserCache – This setting has been deprecated since 1.26, has now
  64   been removed. If you still desire to disable the parser cache, instead you can
  65   set `$wgParserCacheType = CACHE_NONE;`.
  66 * $wgCommentTableSchemaMigrationStage – This temporary migration setting has now
  67   been removed. Code finding it unset should treat it as being MIGRATION_NEW.
  68 * $wgAuth – This old setting, deprecated in 1.27, has been removed as part of
  69   the removal of AuthPlugin.
  70 * $wgSitesCacheFile – This configuration was introduced in 1.25 with the intent
  71   to allow sites to configure a file in which to cache the SiteStore database
  72   table, but it was never used. SiteStore already caches its information by
  73   default using BagOStuff (e.g. Memcached or APC).
  74 * $wgClockSkewFudge – This setting was used by User.php to let sites adjust by
  75   how much MediaWiki would fudge when trying to minimize the chances of a
  76   user.user_touched database update to the "current" timestamp being before the
  77   value already there (e.g. due to clock skew between different servers). This
  78   is no longer a problem, because the code now ensures the timestamp is always
  79   higher than the previous one. The writes are guarded with CAS logic (check
  80   and set), which prevents updates that would overlap.
  81
  82 === New user-facing features in 1.33 ===
  83 * (T96041) __EXPECTUNUSEDCATEGORY__ on a category page causes the category
  84   to be hidden on Special:UnusedCategories.
  85 * (T210814) SVGs are now by default displayed in wiki language on image
  86   pages.
  87 * Special:CreateAccount now warns the user if their chosen username has to be
  88   normalized.
  89 * (T205040) Multilingual images are now be displayed in the current parse
  90   language where available.
  91 * Special:ActiveUsers will no longer filter out users who became inactive since
  92   the last time the active users query cache was updated.
  93
  94 === New developer features in 1.33 ===
  95 * The AuthManagerLoginAuthenticateAudit hook has a new parameter for
  96   additional information about the authentication event.
  97 * TextContent::getText() was introduced as a replacement for
  98   Content::getNativeData() for text-based content models.
  99 * (T214706) LinksUpdate::getAddedExternalLinks() and
 100   LinksUpdate::getRemovedExternalLinks() were introduced.
 101
 102 === External library changes in 1.33 ===
 103 ==== New external libraries ====
 104 * Added wikimedia/password-blacklist 0.1.4.
 105 * Added guzzlehttp/guzzle 6.3.3.
 106 * Added jakub-onderka/php-console-highlighter 0.3.2 explicitly (dev-only).
 107
 108 ==== Changed external libraries ====
 109 * Updated OOUI from v0.29.2 to v0.31.0.
 110 * Updated OOjs Router from pre-release to v0.2.0.
 111 * Updated moment from v2.19.3 to v2.24.0.
 112 * Updated wikimedia/xmp-reader from 0.6.0 to 0.6.2.
 113 * Updated wikimedia/scoped-callback from 2.0.0 to 3.0.0.
 114 * Updated wikimedia/ip-set from 1.2.0 to 2.0.1.
 115   * The deprecated IPSet\IPSet alias was removed, Wikimedia\IPSet must be
 116     used instead.
 117 * Updated qunitjs from 2.6.2 to 2.9.1.
 118 * Updated jquery-client from 2.0.1 to 2.0.2.
 119 * Updated psy/psysh from 0.9.6 to 0.9.9 (dev-only).
 120 * Updated nikic/php-parser from 3.1.3 to 3.1.5 (dev-only).
 121 * Updated pear/net_smtp from 1.8.0 to 1.8.1.
 122 * Updated cssjanus/cssjanus from 1.2.0 to 1.2.1.
 123 * Updated wikimedia/php-session-serializer from 1.0.6 to 1.0.7.
 124
 125 ==== Removed external libraries ====
 126 * …
 127
 128 === Bug fixes in 1.33 ===
 129 * (T164211) Special:UserRights could sometimes fail with a
 130   "conflict detected" error when there weren't any conflicts.
 131
 132 === Action API changes in 1.33 ===
 133 * (T198913) Added 'ApiOptions' hook.
 134 * The JSON formatversion=2 is no longer experimental.
 135 * Internal API errors (those with code beginning "internal_api_error") will
 136   include the exception class name in a data field named "errorclass".
 137   * Class names are not guaranteed to remain stable, and in particular database
 138     exceptions will now include the "Wikimedia\Rdbms\" prefix in the class name.
 139   * The code including an exception class name is deprecated. In the future,
 140     all internal errors will use code "internal_api_error".
 141 * (T212356) When using action=delete on pages with many revisions, the module
 142   may return a boolean-true 'scheduled' and no 'logid'. This signifies that the
 143   deletion will be processed via the job queue.
 144 * action=setnotificationtimestamp will now update the watchlist asynchronously
 145   if entirewatchlist is set, so updates may not be visible immediately
 146 * Block info will be added to "blocked" errors from more modules.
 147 * (T216245) Autoblocks will now be spread by action=edit and action=move.
 148
 149 === Action API internal changes in 1.33 ===
 150 * A number of deprecated methods for API documentation, intended for overriding
 151   by extensions, are no longer called by MediaWiki, and will emit deprecation
 152   notices if your extension attempts to use them:
 153   * ApiBase::getDescription() (deprecated in 1.25)
 154   * ApiBase::getParamDescription() (deprecated in 1.25)
 155   * ApiBase::getExamples() (deprecated in 1.25)
 156   * ApiBase::getDescriptionMessage() (deprecated in 1.30)
 157   Additionally, the  'APIGetDescription' and 'APIGetParamDescription' hooks have
 158   been removed, as their only use was to let extensions override values returned
 159   by getDescription() and getParamDescription(), respectively.
 160 * API error codes may only contain ASCII letters, numbers, underscore, and
 161   hyphen. Methods such as ApiBase::dieWithError() and
 162   ApiMessageTrait::setApiCode() will throw an InvalidArgumentException if
 163   passed a bad code.
 164 * ApiBase::checkTitleUserPermissions() now takes an options array as its third
 165   parameter. Passing a User object or null is deprecated.
 166 * The api-feature-usage log channel now has log context. The text message is
 167   deprecated and will be removed in the future.
 168
 169 === Languages updated in 1.33 ===
 170 MediaWiki supports over 350 languages. Many localisations are updated regularly.
 171 Below only new and removed languages are listed, as well as changes to languages
 172 because of Phabricator reports.
 173
 174 * (T203908) Added language support for Eastern Pwo (kjp).
 175 * (T213717) Fixed a translation error on Goan Konkani (gom-deva) translations
 176   for NS_TEMPLATE.
 177 * (T212221) Added $digitTransformTable for Santali (sat).
 178 * (T216479) Added language support for Saisiyat (xsy).
 179
 180 === Breaking changes in 1.33 ===
 181 * The parameteter $lang in DifferenceEngine::setTextLanguage must be of type
 182   Language. Other types are deprecated since 1.32.
 183 * Skin::doEditSectionLink requires type Language for the parameter $lang.
 184   The parameters $tooltip and $lang are mandatory. Omitting the parameters is
 185   deprecated since 1.32.
 186 * Language::truncate(), deprecated in 1.31, has been removed.
 187 * UtfNormal, deprecated in 1.25, was removed. Use UtfNormal\Validator directly
 188   instead.
 189 * (T197179) In OOUI HTMLForm fields, the parameters 'notice', 'notice-messages',
 190   and 'notice-message', which were deprecated in 1.32, were removed. Instead,
 191   use 'help', 'help-message', and 'help-messages'.
 192 * (T197179) HTMLFormField::getNotices(), deprecated in 1.32, was removed.
 193 * The "Parsoid v1" compatibility mappings in ParsoidVirtualRESTService and
 194   RestbaseVirtualRESTService, deprecated since 1.26, have been removed.
 195   Use the RESTBase v1 or Parsoid v3 API instead.
 196 * ParserOptions defaults 'tidy' to true now, since the untidy modes of the
 197   parser are being deprecated and ParserOptions::getCanonicalOverrides()
 198   has always been true at any rate.
 199 * Support for disabling tidy and external tidy implementations has been removed.
 200   This was deprecated in 1.32. The pure PHP Remex tidy implementation is now
 201   used and no configuration is necessary.
 202 * A number of deprecated methods for API documentation, intended for overriding
 203   by extensions, are no longer called by MediaWiki, and will emit deprecation
 204   notices if your extension attempts to use them:
 205   * ApiBase::getDescription() (deprecated in 1.25)
 206   * ApiBase::getParamDescription() (deprecated in 1.25)
 207   * ApiBase::getExamples() (deprecated in 1.25)
 208   * ApiBase::getDescriptionMessage() (deprecated in 1.30)
 209   Additionally, the  'APIGetDescription' and 'APIGetParamDescription' hooks have
 210   been removed, as their only use was to let extensions override values returned
 211   by getDescription() and getParamDescription(), respectively.
 212 * The authentication hooks 'AbortAutoAccount' 'AbortNewAccount', 'AbortLogin',
 213   'LoginUserMigrated', 'UserCreateForm', and 'UserLoginForm', all deprecated by
 214   the creation of AuthManager in 1.27, have been removed. This also means that
 215   the FakeAuthTemplate and LoginForm classes are removed, that FakeAuthTemplate
 216   is no longer passed into LoginSignupSpecialPage->getFieldDefinitions(), and
 217   that LoginSignupSpecialPage->getBCFieldDefinitions() is removed.
 218 * The 'jquery.localize' module, deprecated in 1.32, has been removed. Instead,
 219   use 'jquery.i18n'.
 220 * The hooks LanguageGetSpecialPageAliases and LanguageGetMagic, deprecated since
 221   1.16, have now been removed. Instead, use $specialPageAliases or $magicWords
 222   respectively in a $wgExtensionMessagesFiles file.
 223 * The following methods of the Preferences class, deprecated in 1.31, have been
 224   removed:
 225   * getSaveBlacklist()
 226   * loadPreferenceValues()
 227   * getOptionFromUser()
 228   * profilePreferences()
 229   * skinPreferences()
 230   * filesPreferences()
 231   * datetimePreferences()
 232   * renderingPreferences()
 233   * editingPreferences()
 234   * rcPreferences()
 235   * watchlistPreferences()
 236   * searchPreferences()
 237   * miscPreferences()
 238   * generateSkinOptions()
 239   * getDateOptions()
 240   * getImageSizes()
 241   * getThumbSizes()
 242   * validateSignature()
 243   * cleanSignature()
 244   * getTimezoneOptions()
 245   * filterIntval()
 246   * filterTimezoneInput()
 247   * getTimeZoneList()
 248 * mw.util.jsMessage(), deprecated in 1.20, was removed. Use mw.notify instead.
 249 * (T61113) User::EDIT_TOKEN_SUFFIX was removed. It was deprecated since 1.27.
 250 * The 'mediawiki.api' module aliases, deprecated in 1.32, have been removed.
 251   Specifically: mediawiki.api.category, mediawiki.api.edit,
 252   mediawiki.api.login, mediawiki.api.options, mediawiki.api.parse,
 253   mediawiki.api.upload, mediawiki.api.user, mediawiki.api.watch,
 254   mediawiki.api.messages, and mediawiki.api.rollback.
 255 * The 'jquery.byteLimit' module alias for 'jquery.lengthLimit',
 256   deprecated in 1.31, was removed.
 257 * Revision::fetchRevision(), deprecated in 1.28, was removed.
 258 * Class SquidUpdate, deprecated in 1.27, was removed.
 259 * Title->getSquidURLs(), deprecated in 1.27, was removed. Instead, use
 260   Title->getCdnUrls().
 261 * Title::escapeFragmentForURL(), deprecated in 1.30, was removed. Use
 262   Sanitizer::escapeIdForLink() or escapeIdForExternalInterwiki() instead.
 263 * Title->canTalk(), deprecated in 1.30, was removed. Instead, use
 264   Title->canHaveTalkPage().
 265 * Title's methods for site and user page related to CSS and JS, deprecated in
 266   1.31, were removed:
 267   * Title->isCssOrJsPage() — Use Title->isSiteConfigPage()
 268   * Title->isCssJsSubpage() – Use Title->isUserConfigPage()
 269   * Title->getSkinFromCssJsSubpage() – Use Title->getSkinFromConfigSubpage()
 270   * Title->isCssSubpage() – Use Title->isUserCssConfigPage()
 271   * Title->isJsSubpage() – Use Title->isUserJsConfigPage()
 272 * SiteSQLStore, deprecated in 1.27 and whose only method, ::newInstance(),
 273   would return the global SiteStore instance, has been removed. You can get to
 274   this via MediaWiki\MediaWikiServices::getInstance()->getSiteStore() directly.
 275 * Linker::formatSize, deprecated in 1.28, has been removed (with DummyLinker's).
 276   Instead, use Language->formatSize() with the relevant Language object.
 277 * Linker::formatTemplates, deprecated in 1.28, has been removed (along with the
 278   version in DummyLinker). You can use TemplatesOnThisPageFormatter directly.
 279 * EventRelayerGroup::singleton(), deprecated in 1.27, has been removed. You can
 280   use MediaWikiServices::getInstance()->getEventRelayerGroup() directly.
 281 * LinkCache->addLink(), deprecated in 1.27, has been removed. It is thought to
 282   be unused, and is distinct from OutputPage->addLink(), which remains.
 283 * JsonContent->getJsonData(), deprecated in 1.25, has been removed. Instead, use
 284   JsonContent->getData().
 285 * MWExceptionHandler::getLogId(), deprecated in 1.27, has been removed, as the
 286   exception ID is the same as the request ID, from WebRequest::getRequestId().
 287 * SearchEngine::getNearMatchResultSet(), deprecated in 1.27, has been removed.
 288   You can use SearchEngine::getNearMatcher() instead.
 289 * EmailNotification::updateWatchlistTimestamp, deprecated in 1.27, has been
 290   removed. Instead, use WatchedItemStore::updateNotificationTimestamp directly.
 291 * User::getGroupName() and ::getGroupMember(), both deprecated in 1.29, have
 292   been removed. Instead, please use UserGroupMembership::getGroupName() and
 293   UserGroupMembership::getGroupMemberName().
 294 * Backwards compatibility for setting wgSessionsInObjectCache to false or using
 295   wgSessionHandler, both of which were deprecated in 1.27 with the introduction
 296   of SessionManager, has been removed.
 297 * SessionManager::autoCreateUser, deprecated in 1.27, has been removed. Use
 298   MediaWiki\Auth\AuthManager::autoCreateUser instead.
 299 * The mw.libs.jpegmeta property, deprecated in 1.31, was removed.
 300   Use require( 'mediawiki.libs.jpegmeta' ) instead.
 301 * The mw.user.stickyRandomId() method, deprecated in 1.32, was removed.
 302   Use mw.user.getPageviewToken() instead.
 303 * Removed deprecated class property WikiRevision::$importer.
 304 * ResourceLoaderFileModule::readStyleFiles() now requires its $context
 305   parameter.
 306 * The ChangeList::insertArticleLink() method, that was deprecated in 1.27, has
 307   been removed.
 308 * MessageBlobStore::__construct() now requires its $rl parameter.
 309 * Second parameter to Sanitizer::escapeIdReferenceList() (deprecated in 1.31)
 310   has been removed.
 311 * The 'jquery.xmldom' module has been removed.
 312 * The 'jquery.mockjax' module has been removed.
 313 * The 'jquery.hidpi' module, deprecated in 1.32, has been removed.
 314 * AuthPlugin and related code, deprecated in 1.27, has been removed. Extensions
 315   should instead use AuthManager. The following no longer exist:
 316   * The AuthPlugin class itself and the related AuthPluginUser class and i18n
 317   * The AuthPluginSetup and AuthPluginAutoCreate hooks
 318   * The transitional wrapper classes AuthPluginPrimaryAuthenticationProvider,
 319     AuthManagerAuthPlugin, and AuthManagerAuthPluginUser.
 320   * The $wgAuth configuration setting and its use in Setup.php and unit tests
 321 * (T217772) The 'wgAvailableSkins' mw.config key in JavaScript, was removed.
 322 * Language::markNoConversion, deprecated in 1.32, has been removed. Use
 323   LanguageConverter::markNoConversion instead.
 324 * BagOStuff::modifySimpleRelayEvent() method has been removed.
 325 * ParserOutput::getLegacyOptions, deprecated in 1.30, has been removed.
 326   Use ParserOutput::allCacheVaryingOptions instead.
 327 * CdnCacheUpdate::newSimplePurge, deprecated in 1.27, has been removed.
 328   Use CdnCacheUpdate::newFromTitles() instead.
 329
 330 === Deprecations in 1.33 ===
 331 * The configuration option $wgUseESI has been deprecated, and is expected
 332   to be removed in a future release.
 333 * The configuration option $wgSquidPurgeUseHostHeader has been deprecated,
 334   and is expected to be removed in a future release.
 335 * The configuration options $wgFixArabicUnicode and $wgFixMalayalamUnicode,
 336   introduced in MW 1.17, have been deprecated.  These fixes will always be
 337   applied for Arabic and Malayalam in the future.  Please enable these on
 338   your local wiki (if you have them explicitly set to false) and run
 339   maintenance/cleanupTitles.php to fix any existing page titles.
 340 * The LegacyHookPreAuthenticationProvider class, deprecated since its creation
 341   in 1.27 as part of the AuthManager re-write, now emits deprecation warnings.
 342   This will help identify the issue if you added it to $wgAuthManagerConfig.
 343 * wfSplitWikiId() is now deprecated. Cache key generation should have the wiki
 344   domain ID as a key component and use makeGlobalKey().
 345 * (T202094) Title::getUserCaseDBKey() is deprecated; instead, please use
 346   Title::getDBKey(), which doesn't vary case.
 347 * User::getPasswordValidity() is now deprecated. User::checkPasswordValidity()
 348   returns the same information in a more useful format.
 349 * For Linker::generateTOC() and Linker::tocList(), passing strings or booleans
 350   as the $lang parameter was deprecated. The same applies to DummyLinker.
 351 * The PasswordPolicy 'PasswordCannotBePopular' has been deprecated. To
 352   follow best practices, it is reccommended to use 'PasswordNotInLargeBlacklist'
 353   instead which blacklists 100,000 commonly used passwords.
 354 * (T208862) Action::requiresUnblock() is now called from
 355   Title::getUserPermissionsErrors() and Title::userCan(). Previously, the method
 356   was only called in Action::checkCanExecute(). Actions should ensure that their
 357   requiresUnblock() returns the proper result (the default is `true`).
 358 * (T211608) The MediaWiki\Services namespace has been renamed to
 359   Wikimedia\Services. The old name is still supported, but deprecated.
 360 * (T155582) Content::getNativeData has been deprecated. Please use model-
 361   specific getters, such as TextContent::getText().
 362 * The class WebInstallerOutput is now marked as @private.
 363 * (T209699) The jquery.async module has been deprecated. JavaScript code that
 364   needs asynchronous behaviour should use Promises.
 365 * Password::equals() is deprecated, use verify().
 366 * BaseTemplate::msgWiki() and QuickTemplate::msgWiki() will be removed. Use
 367   other means to fetch a properly escaped message string or Message object.
 368 * (T126091) The 'ResourceLoaderTestModules' hook, which lets you declare QUnit
 369   testing code for your JavaScript modules, is deprecated. Instead, you can now
 370   use the new extension registration key 'QUnitTestModule'.
 371 * (T213426) The jquery.throttle-debounce module has been deprecated. JavaScript
 372   code that needs this behaviour should use OO.ui.debounce/throttle.
 373 * The mw.language.specialCharacters property from the
 374   'mediawiki.language.specialCharacters' module has been deprecated.
 375   Use require( 'mediawiki.language.specialCharacters' ) instead.
 376 * ChangeTags::purgeTagUsageCache() has been deprecated, and is expected to be
 377   removed in a future release.
 378 * Passing a User object or null as the third parameter to
 379   ApiBase::checkTitleUserPermissions() has been deprecated. Pass an array
 380   [ 'user' => $user ] instead.
 381 * (T211578) Block::prevents is deprecated. Use Block::isEmailBlocked,
 382   Block::isCreateAccountBlocked and Block::isUsertalkEditAllowed to get and set
 383   block properties; use Block::appliesToRight and Block::appliesToUsertalk to
 384   check block behaviour.
 385 * The api-feature-usage log channel now has log context. The text message is
 386   deprecated and will be removed in the future.
 387 * The FileBasedSiteLookup class has been deprecated. For a cacheable SiteLookup
 388   implementation, use CachingSiteStore instead.
 389
 390 === Other changes in 1.33 ===
 391 * (T201747) Html::openElement() warns if given an element name with a space
 392   in it.
 393 * The implementation of buildStringCast() in Wikimedia\Rdbms\Database has
 394   changed to explicitly cast. Subclasses relying on the base-class
 395   implementation should check whether they need to override it now.
 396 * BagOStuff::add is now abstract and must explicitly be defined in subclasses.
 397
 398 == Compatibility ==
 399 MediaWiki 1.33 requires PHP 7.0.13 or later. Although HHVM 3.18.5 or later is
 400 supported, it is generally advised to use PHP 7.0.13 or later for long term
 401 support.
 402
 403 MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
 404 but support for them is somewhat less mature. There is experimental support for
 405 Oracle and Microsoft SQL Server.
 406
 407 The supported versions are:
 408
 409 * MySQL 5.5.8 or later
 410 * PostgreSQL 9.2 or later
 411 * SQLite 3.8.0 or later
 412 * Oracle 9.0.1 or later
 413 * Microsoft SQL Server 2005 (9.00.1399)
 414
 415 == Online documentation ==
 416 Documentation for both end-users and site administrators is available on
 417 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 418 for pages that explicitly state that their contents are in the public domain):
 419
 420        https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
 421
 422 == Mailing list ==
 423 A mailing list is available for MediaWiki user support and discussion:
 424
 425        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 426
 427 A low-traffic announcements-only list is also available:
 428
 429        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 430
 431 It's highly recommended that you sign up for one of these lists if you're
 432 going to run a public MediaWiki, so you can be notified of security fixes.
 433
 434 == IRC help ==
 435 There's usually someone online in #mediawiki on irc.freenode.net.