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Change notes from older releases. For current info see RELEASE-NOTES-1.32.
= MediaWiki 1.31 =
== MediaWiki 1.31.0 ==
=== Changes since MediaWiki 1.31.0-rc.2 ===
* (T195783) Initialize PSR-4 namespaces at same stage as normal autoloader.
* (T196092) Hide MySQL binary/utf-8 charset option in the installer.
* (T196185) Don't allow setting $wgDBmysql5 in the installer.
* (T196125) php-memcached 3.0 (provided with PHP 7.0) is now supported.
* (T182366) UploadBase::checkXMLEncodingMissmatch() now works on PHP 7.1+
* (T118683) Fix exception from &$user deref on HHVM in the TitleMoveComplete hook.
* (T196672) The mtime of extension.json files is now able to be zero
* (T180403) Validate $length in padleft/padright parser functions.
* (T143790) Make $wgEmailConfirmToEdit only affect edit actions.
=== Changes since MediaWiki 1.31.0-rc.0 ===
* (T33223) Drop archive.ar_text and ar_flags.
* Add default edit rate limit of 90 edits/minute for all users.
* (T187645) Use codepoint as tiebreaker when getting first-letters in
IcuCollation.
* (T191947) Don't shell during the installer if shelling out is disabled.
* (T194319) Improve duplicate config setting exception as part of extension
registration.
* (T195211) Don't require trailing slash in PSR-4 autoloader directory.
* (T186565) Fix PHP Notice from `ob_end_flush()` in `FileRepo::streamFile()`.
* Do not incorrectly hide namespace input field in the installer.
* (T186456) Refactor checks looking for PEAR maik libraries to be clearer.
=== Important pre-upgrade notes for 1.31 ===
* If you're using MySQL, SQLite, or MSSQL, are not using update.php to apply
schema changes, and cannot have downtime to run migrateArchiveText.php and
apply patch-drop-ar_text.sql manually, you'll have to apply a default value
to the ar_text and ar_flags columns of the archive table or make those
columns nullable before upgrading to MediaWiki 1.31.
maintenance/archives/patch-nullable-ar_text.sql shows how to do this for MySQL.
=== Configuration changes in 1.31 ===
* $wgEnableAPI and $wgEnableWriteAPI are now deprecated and will be removed in
a future version. The API is now considered to be stable, secure and
essential.
* $wgUsejQueryThree was removed, as it is now the default. This was documented
as a temporary variable during the migration period, deprecated since 1.29.
* $wgLogoHD has been updated to support svg images and uses $wgLogo where
possible for fallback images such as png.
* (T44246) $wgFilterLogTypes will no longer ignore 'patrol' when user does not
have the right to mark things patrolled.
* Wikis that contain imported revisions or CentralAuth global blocks should run
maintenance/cleanupUsersWithNoId.php.
* The configuration settings $wgResourceLoaderMinifierStatementsOnOwnLine and
$wgResourceLoaderMinifierMaxLineLength, deprecated since 1.27, were removed.
* (T180921) $wgReferrerPolicy now supports having fallbacks for browsers that
are not using the latest version of the Referrer Policy specification.
* $wgFragmentMode is now set to [ 'legacy', 'html5' ] by default. This is a
first step of migration to human-readable section IDs that will later result
in 'html5' being the default mode.
* CACHE_ACCEL now only supports APC(u) or WinCache. XCache support was removed
as upstream is inactive and has no plans to move to PHP 7.
* The old CategorizedRecentChanges feature, including its related configuration
option $wgAllowCategorizedRecentChanges, has been removed.
* (T188472) The 'comma' value for $wgArticleCountMethod is no longer supported
for performance reasons, and installations with this setting will now work as
if it was configured with 'any'.
* (T185753) MediaWiki now defaults to using RemexHtml to tidy up user input,
rather than being off by default. If you wish to disable HTML tidying
entirely, set $wgTidyConfig to null; if you wish to use the old, deprecated
Tidy external binary, both set $wgTidyConfig to null and $wgUseTidy to true.
* $wgLogAutopatrol now defaults to false instead of true.
* $wgValidateAllHtml was removed and will be ignored.
* $wgScriptExtension, deprecated and ignored since 1.25, was removed. See the
1.25 release notes for more information.
* $wgUseAjax is now marked as deprecated, just like the deprecated AJAX
framework that it enables. Some extensions mistakenly used this to check
whether any AJAX functionality at all should be enabled, further making this
problematic to retain.
* $wgDBmysql5 is now deprecated, and will be removed in a future version. It
has been marked as experimental ever since it was introduced.
=== New features in 1.31 ===
* (T76554) User sub-pages named ….json are now protected in the same way that
….js and ….css pages are, so that configuration options can safely be placed
there.
* Wikimedia\Rdbms\IDatabase->select() and similar methods now support joins
with parentheses for grouping.
* As a first pass in standardizing dialog boxes across the MediaWiki product,
Html class now provides helper methods for messageBox, successBox, errorBox
and warningBox generation.
* (T9240) Imports will now record unknown (and, optionally, known) usernames in
a format like "iw>Example".
* (T20209) Linker (used on history pages, log pages, and so on) will display
usernames formed like "iw>Example" as interwiki links, as if by wikitext like
[[iw:User:Example|iw>Example]].
* (T111605) The 'ImportHandleUnknownUser' hook allows extensions to auto-create
users during an import.
* Added a hook, ParserOutputPostCacheTransform, to allow extensions to affect
the ParserOutput::getText() post-cache transformations.
* Added a hook, UploadForm:getInitialPageText, to allow extensions to alter the
initial page text for file uploads.
* (T181651) The info page for File pages now displays the file's base-16 SHA1
hash value in the table of basic information.
* Style tags with a 'data-mw-deduplicate' attribute will be deduplicated as a
ParserOutput::getText() post-cache transformation. This may be disabled by
passing 'deduplicateStyles' => false to that method.
* The identity of the logged-in or IP "actor" for logged actions is being moved
into a new actor table, with the rows in tables such as revision and logging
referring to the actor ID instead of storing the user ID and name/IP in
every row.
* This is currently gated by $wgActorTableSchemaMigrationStage. Most wikis
can set this to MIGRATION_NEW and run maintenance/migrateActors.php as
soon as any necessary extensions are updated.
* Most code accessing rows for logged actions from the database should use
the relevant getQueryInfo() methods to get the information needed to build
the SQL query. The ActorMigration class may also be used to get feature
-flagged information needed to access actor-related fields during the
migration period.
* Added Wikimedia\Rdbms\IDatabase::cancelAtomic(), to roll back an atomic
section without having to roll back the whole transaction.
* Wikimedia\Rdbms\IDatabase::doAtomicSection(), non-native ::insertSelect(),
and non-MySQL ::replace() and ::upsert() no longer roll back the whole
transaction on failure.
* (T189785) Added a monthly heartbeat ping to the pingback feature.
* The CLI installer (maintenance/install.php) learned to detect and include
extensions. Pass --with-extensions to enable that feature.
* (T184791) rc_patrolled now has three states: "0" for unpatrolled,
"1" for manually patrolled and "2" for autopatrolled actions.
* Extensions can now set their type to "editor" if they provide an editor or
enhance the editing experience.
* Extensions can use a PSR-4 autoloader by setting an "AutoloadNamespaces"
property in extension.json. See the documentation at
<https://mediawiki.org/wiki/Manual:Extension.json/Schema#AutoloadNamespaces>
for more details and an example.
* (T19099) Tabs which link to pages that don't exist (like those to uncreated
discussion pages) now have a tooltip to indicate state, not just colour.
=== External library changes in 1.31 ===
* pear/mail, pear/mail_mime and pear/mail_mime-decode have been moved from
suggested to required. These packages now must be installed via composer
and not via PEAR itself.
==== Upgraded external libraries ====
* Updated jquery.chosen from v0.9.14 to v1.8.2.
* Updated composer/spdx-licenses from 1.1.4 to 1.3.0 (development dependency).
* Updated nikic/php-parser from 2.1.0 to 3.1.3 (development dependency).
* Updated wikimedia/ip-set from 1.1.0 to 1.2.0.
* Updated wikimedia/relpath from 2.0.0 to 2.1.1.
* Updated wikimedia/running-stat from 1.1.0 to 1.2.0.
* Updated wikimedia/wrappedstring from 2.2.0 to 2.3.0.
* Updated mediawiki/at-ease from 1.1.0 to 1.2.0.
* Updated wikimedia/php-session-serializer from 1.0.4 to 1.0.6.
* Updated wikimedia/remex-html from 1.0.2 to 1.0.3.
* Updated wikimedia/html-formatter from 1.0.1 to 1.0.2.
==== New external libraries ====
* Added wikimedia/object-factory 1.0.0
==== Removed and replaced external libraries ====
* (T17845) The deprecated 'jquery.badge' module was removed.
* The deprecated 'jquery.autoEllipsis' module was removed. Use the CSS
text-overflow property instead.
* The deprecated 'jquery.placeholder' module was removed.
* The deprecated 'jquery.appear' module was removed. Use the
'mediawiki.viewport' module instead.
* mediawiki/at-ease was replaced with wikimedia/at-ease.
=== Bug fixes in 1.31 ===
* (T90902) Non-breaking space in header ID breaks anchor.
* (T189375) CSSMin now allows quoted urls in `url()` syntax to start with a
space.
* (T2087, T10897, T87753, T174639) Whitespace created by category and language
links is now stripped rather than leaving blank lines in odd places.
* (T3780) Uploads with UTF-8 names now work on PHP7.1+ on Windows servers.
* (T182366) UploadBase::checkXMLEncodingMissmatch() now works on PHP 7.1+
=== Action API changes in 1.31 ===
* (T185058) The 'name' value to tgprop for action=query&list=tags has been
removed. It has never made a difference in the output, the name was always
returned regardless.
* The 'watch' and 'unwatch' parameters for action=move have been removed. They
were deprecated and also accidentally nonfunctional since 1.17 in 2010. Use
'watchlist' instead.
=== Action API internal changes in 1.31 ===
* ApiBase::getProfileDBTime, deprecated since 1.25, was removed.
* ApiBase::getModuleProfileName, deprecated since 1.25, was removed.
* ApiBase::getProfileTime, deprecated since 1.25, was removed.
=== Languages updated in 1.31 ===
MediaWiki supports over 350 languages. Many localisations are updated
regularly. Below only new and removed languages are listed, as well as
changes to languages because of Phabricator reports.
* (T180052) Mirandese (mwl) now supports gendered NS_USER/NS_USER_TALK.
* (T182305) New language support: Nyungar (nys).
* (T186359) New language support: Siberian Tatar [cебертатар] (sty).
* (T186635) New language support: Guianan Creole (gcr).
* (T186647) New language support: Kumyk [къумукъ] (kum).
* (T187750) New language support: Spanish formal address (es-formal).
* (T187824) New language support: Hungarian formal address (hu-formal).
* (T189127) New language support: Gorontalo (gor).
=== Breaking changes in 1.31 ===
* MessageBlobStore::insertMessageBlob(), deprecated in 1.27, was removed.
* The OutputPage class constructor now requires a context parameter.
Instantiating without context was deprecated in 1.18.
* The mw.page JavaScript singleton, deprecated in 1.30, was removed.
* Article::getLastPurgeTimestamp(), WikiPage::getLastPurgeTimestamp(), and the
related WikiPage::PURGE_* constants, deprecated in 1.29, were removed.
* The Article::selectFields(), ::onArticleCreate(), ::onArticleDelete(), and
::onArticleEdit() methods, deprecated in 1.24, were removed.
* Installer::locateExecutable() and ::locateExecutableInDefaultPaths() were
removed. Use ExecutableFinder::findInDefaultPaths() instead.
* The deprecated MW_DIFF_VERSION constant was removed.
DifferenceEngine::MW_DIFF_VERSION should be used instead.
* Due to significant refactoring, method ContribsPager::getUserCond() that had
no access restriction has been removed.
* The Block class will no longer accept usable-but-missing usernames for
'byText' or ->setBlocker(). Callers should either ensure the blocker exists
locally or use a new interwiki-format username like "iw>Example".
* The following methods and constants from the WatchedItem class, which were
deprecated in 1.27, have been removed:
* WatchedItem::getTitle()
* WatchedItem::fromUserTitle()
* WatchedItem::addWatch()
* WatchedItem::removeWatch()
* WatchedItem::isWatched()
* WatchedItem::duplicateEntries()
* WatchedItem::IGNORE_USER_RIGHTS
* WatchedItem::CHECK_USER_RIGHTS
* WatchedItem::DEPRECATED_USAGE_TIMESTAMP
* The $statementsOnOwnLine parameter of JavaScriptMinifier::minify was removed.
$wgResourceLoaderMinifierStatementsOnOwnLine, the corresponding configuration
variable, has been deprecated since 1.27 and was removed as well.
* The $maxLineLength parameter of JavaScriptMinifier::minify was removed.
$wgResourceLoaderMinifierMaxLineLength, the corresponding configuration
variable, has been deprecated since 1.27 and was removed as well.
* The HtmlFormatter class, deprecated in 1.27, was removed. The namespaced
HtmlFormatter\HtmlFormatter class should be used instead.
* The driver 'mysql' for MySQL, deprecated in MediaWiki 1.30, has been removed.
The driver has been deprecated since PHP 5.5 and was removed in PHP 7.0. The
default driver for MySQL has been 'mysqli' since MediaWiki 1.22.
* The following properties of PreparedEdit were deprecated in 1.21 and have
been removed:
* PreparedEdit->newText
* PreparedEdit->oldText
* PreparedEdit->pst
* ParserOutput objects which are generated using a non-default value for
ParserOptions::setWrapOutputClass() can no longer be added to the parser
cache.
* The following deprecated methods from the OutputPage class have been removed:
* OutputPage::addExtensionStyle(); deprecated in 1.27
* OutputPage::getExtStyle(); deprecated in 1.27
* OutputPage::setETag(); deprecated in 1.28 (obsolete no-op)
* OutputPage::setSquidMaxage(); deprecated in 1.27
* OutputPage::readOnlyPage(); deprecated in 1.25
* OutputPage::rateLimited(); deprecated in 1.25
* Additionally, the protected OutputPage::$mExtStyles array, only accessed
through the above and with no known uses, was removed.
* The no-op method Skin::showIPinHeader(), deprecated in 1.27, was removed.
* The following variables and methods in EditPage, deprecated in MediaWiki 1.30,
were removed:
* $isCssJsSubpage — use ::isUserConfigPage()
* $isCssSubpage — use ::isUserCssConfigPage()
* $isJsSubpage — use ::isUserJsConfigPage()
* $isWrongCaseCssJsPage – use ::isWrongCaseUserConfigPage()
* ::getSummaryInput() – use ::getSummaryInputWidget()
* ::getSummaryInputOOUI() – use ::getSummaryInputWidget()
* ::getCheckboxes() – use ::getCheckboxesWidget() or
::getCheckboxesDefinition()
* ::getCheckboxesOOUI() – use ::getCheckboxesWidget() or
::getCheckboxesDefinition()
* ResourceLoaderModule::getPosition(), deprecated in 1.29, has been removed.
* In User, the cookie-related methods which were wrappers for the functions on
the response object, and were deprecated in 1.27, have been removed:
* ::setCookie()
* ::clearCookie()
* ::setExtendedLoginCookie()
Note that User::setCookies() remains, and is not deprecated.
* Also in User, some auth-related methods which were deprecated in 1.27 have
been removed:
* ::getEditTokenTimestamp() – use MediaWiki\Session\Token::getTimestamp()
* ::getPasswordFactory() – create a PasswordFactory directly
* ::passwordChangeInputAttribs()
* The global functions wfProfileIn and wfProfileOut, deprecated in 1.25, have
been removed.
* SpecialPageFactory::getList(), deprecated in 1.24, has been removed. You can
use ::getNames() instead.
* OpenSearch::getOpenSearchTemplate(), deprecated in 1.25, has been removed. You
can use ApiOpenSearch::getOpenSearchTemplate() instead.
* The global function wfBaseConvert, deprecated in 1.27, has been removed. Use
Wikimedia\base_convert() directly.
* Calling Database::begin() explicitly during an implicit transaction or when
DBO_TRX is set results in an exception. Calling Database::commit() explicitly
for an implicit transaction also results in an exception. Previously these
were logged as errors. The startAtomic() and endAtomic() methods, or
AtomicSectionUpdate should be used instead.
* The global function wfOutputHandler() was removed, use the its replacement
MediaWiki\OutputHandler::handle() instead. The global function was only
sometimes defined. Its replacement is always available via the autoloader.
* ChangeTags::listExtensionActivatedTags and ::listExtensionDefinedTags,
deprecated in 1.28, have been removed. Use ::listSoftwareActivatedTags() and
::listSoftwareDefinedTags() instead.
* Title::getTitleInvalidRegex(), deprecated in 1.25, has been removed. You can
use MediaWikiTitleCodec::getTitleInvalidRegex() instead.
* HTMLForm & VFormHTMLForm::isVForm(), deprecated in 1.25, have been removed.
* The ProfileSection class, deprecated in 1.25 and unused, has been removed.
* The ResourceLoaderGetLessVars hook, deprecated in 1.30, has been removed. Use
ResourceLoaderModule::getLessVars() to expose local variables instead of
global ones.
* As part of work to modernise user-generated content clean-up, a config option
and some methods related to HTML validity were removed without deprecation.
The public methods MWTidy::checkErrors() and the path through which it was
called, TidyDriverBase::validate(), are removed, as are the testing methods
MediaWikiTestCase::assertValidHtmlSnippet() and ::assertValidHtmlDocument().
The $wgValidateAllHtml configuration option is removed and will be ignored.
* Execution of external programs using MediaWiki\Shell\Command now applies
the RESTRICT_DEFAULT Firejail restriction by default.
* The ResourceLoaderModule::getHashMtime() and ::getDefinitionMtime() methods,
deprecated in 1.26, were removed.
* The deprecated 'mediawiki.widgets.CategorySelector' module alias was removed.
Use the 'mediawiki.widgets.CategoryMultiselectWidget' module directly.
=== Deprecations in 1.31 ===
* The Revision class was deprecated in favor of RevisionStore, BlobStore, and
RevisionRecord and its subclasses.
* The global function wfBCP47 is deprecated in favour of LanguageCode::bcp47.
* The global function wfCountDown is now deprecated in favor of
Maintenance::countDown.
* Several methods for returning lists of fields to select from the database
have been deprecated in favor of similar methods that also return the tables
to select from and the join conditions for those tables.
* Block::selectFields() → Block::getQueryInfo()
* RecentChange::selectFields() → RecentChange::getQueryInfo()
* ArchivedFile::selectFields() → ArchivedFile::getQueryInfo()
* LocalFile::selectFields() → LocalFile::getQueryInfo()
* LocalFile::getCacheFields() with a prefix no longer works
* LocalFile::getLazyCacheFields() with a prefix no longer works
* OldLocalFile::selectFields() → OldLocalFile::getQueryInfo()
* RecentChange::selectFields() → RecentChange::getQueryInfo()
* Revision::userJoinCond() → Revision::getQueryInfo( [ 'user' ] )
* Revision::selectUserFields() → Revision::getQueryInfo( [ 'user' ] )
* Revision::pageJoinCond() → Revision::getQueryInfo( [ 'page' ] )
* Revision::selectPageFields() → Revision::getQueryInfo( [ 'page' ] )
* Revision::selectTextFields() → Revision::getQueryInfo( [ 'text' ] )
* Revision::selectFields() → Revision::getQueryInfo()
* Revision::selectArchiveFields() → Revision::getArchiveQueryInfo()
* User::selectFields() → User::getQueryInfo()
* WikiPage::selectFields() → WikiPage::getQueryInfo()
* Revision::setUserIdAndName() was deprecated.
* Access to TitleValue class properties was deprecated, the relevant getters
should be used instead.
* DifferenceEngine::getDiffBodyCacheKey() is deprecated. Subclasses should
override DifferenceEngine::getDiffBodyCacheKeyParams() instead.
* Use of Maintenance::error( $err, $die ) to exit script was deprecated. Use
Maintenance::fatalError() instead.
* Passing a ParserOptions object to OutputPage::parserOptions() is deprecated.
* The RevisionInsertComplete hook is now deprecated; use instead the hook
RevisionRecordInserted. RevisionInsertComplete is still called, but the second
and third parameter will always be null. Hard deprecation is scheduled for 1.32.
* The following methods that get and set ParserOutput state are deprecated.
Callers should use the new stateless $options parameter to
ParserOutput::getText() instead.
* ParserOptions::getEditSection()
* ParserOptions::setEditSection()
* ParserOutput::getEditSectionTokens()
* ParserOutput::setEditSectionTokens()
* ParserOutput::getTOCEnabled()
* ParserOutput::setTOCEnabled()
* OutputPage::enableSectionEditLinks()
* OutputPage::sectionEditLinksEnabled()
* The public ParserOutput state fields $mTOCEnabled and $mEditSectionTokens
are also deprecated.
* License::getLicenses has been deprecated; use License::getLines instead.
* QuickTemplate::setRef() was deprecated in favour of QuickTemplate::set().
Setting template variables by reference allowed violating the principle of
data being immutable once added to the skin template. In practice, this method
was not being used for that. Rather, setRef() existed as memory optimisation
for PHP 4.
* QuickTemplate::setTranslator() and MediaWikiI18N::set() were deprecated in
favour of Skin::msg() parameters.
* MediaWikiI18N::translate() was deprecated in favour of Skin::msg() or
wfMessage().
* Passing false to ParserOptions::setWrapOutputClass() is deprecated. Use the
'unwrap' transform to ParserOutput::getText() instead.
* \ObjectFactory (no namespace) is deprecated, the namespaced class
\Wikimedia\ObjectFactory from the wikimedia/object-factory library should be
used instead.
* CommentStore::newKey is deprecated. Instead, get an instance from
MediaWikiServices.
* The following CommentStore methods have had their signatures changed to
introduce a $key parameter, usage of the methods on instances retrieved from
CommentStore::newKey will remain unchanged but deprecated:
* CommentStore::getFields
* CommentStore::getJoin
* CommentStore::getComment
* CommentStore::getCommentLegacy
* CommentStore::insert
* CommentStore::insertWithTemplate
* The following methods in Title have been renamed, and the old ones are
deprecated:
* Title::getSkinFromCssJsSubpage – use ::getSkinFromConfigSubpage
* Title::isCssOrJsPage – use ::isSiteConfigPage
* Title::isCssJsSubpage – use ::isUserConfigPage
* Title::isCssSubpage – use ::isUserCssConfigPage
* Title::isJsSubpage – use ::isUserJsConfigPage
* The following methods related to caching of half-parsed HTML were deprecated:
* Parser::serializeHalfParsedText()
* Parser::unserializeHalfParsedText()
* Parser::isValidHalfParsedText()
* StripState::getSubState()
* StripState::merge()
* The DeferredStringifier class is deprecated, use Message::listParam() instead.
* The type string for the parameter $lang of DateFormatter::getInstance is
deprecated.
* Wikimedia\Rdbms\SavepointPostgres is deprecated.
* The DO_MAINTENANCE constant is deprecated. RUN_MAINTENANCE_IF_MAIN should be
used instead.
* The function wfShellWikiCmd() has been deprecated, use
MediaWiki\Shell::makeScriptCommand().
* In the future, the hooks 'PreferencesFormPreSave' and 'PreferencesGetLegend'
will be allowed to provide any HTMLForm object rather than PreferencesForm.
=== Other changes in 1.31 ===
* Browser support for Internet Explorer 10 was lowered from Grade A to Grade C.
* Browser support for Opera 12 and older was dropped entirely. Opera 15+
continues at Grade A.
* Multi-content-revision capability was introduced into the storage layer. See
<https://mediawiki.org/wiki/Requests_for_comment/Multi-Content_Revisions>.
* The "free" CSS class is now only applied to unbracketed URLs in wikitext.
Links written using square brackets will get the class "text" not "free".
* RFC 157418: Whitespace is trimmed from wikitext headings, wikitext list items,
wikitext table captions, wikitext table headings, wikitext table cells. HTML
headings, HTML list items, HTML table captions, HTML table headings, HTML
table cells will not have this trimming behavior.
== Compatibility ==
MediaWiki 1.31 requires PHP 7.0.0 or later. Although HHVM 3.18.5 or later is
supported, it is generally advised to use PHP 7.0.0 or later for long term
support.
MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
but support for them is somewhat less mature. There is experimental support for
Oracle and Microsoft SQL Server.
The supported versions are:
* MySQL 5.5.8 or later
* PostgreSQL 9.2 or later
* SQLite 3.3.7 or later
* Oracle 9.0.1 or later
* Microsoft SQL Server 2005 (9.00.1399)
== Upgrading ==
1.31 has several database changes since 1.30, and will not work without schema
updates. Note that due to changes to some very large tables like the revision
table, the schema update may take quite long (minutes on a medium sized site,
many hours on a large site).
Don't forget to always back up your database before upgrading!
See the file UPGRADE for more detailed upgrade instructions, including
important information when upgrading from versions prior to 1.11.
For notes on 1.30.x and older releases, see HISTORY.
== Online documentation ==
Documentation for both end-users and site administrators is available on
MediaWiki.org, and is covered under the GNU Free Documentation License (except
for pages that explicitly state that their contents are in the public domain):
https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
== Mailing list ==
A mailing list is available for MediaWiki user support and discussion:
https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
A low-traffic announcements-only list is also available:
https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
It's highly recommended that you sign up for one of these lists if you're
going to run a public MediaWiki, so you can be notified of security fixes.
== IRC help ==
There's usually someone online in #mediawiki on irc.freenode.net.
= MediaWiki 1.30 =
== MediaWiki 1.30.0 ==
=== Changes since MediaWiki 1.30.0-rc.0 ===
* Upgraded Moment.js from v2.15.0 to v2.19.3.
* Add ip_changes to postgres/tables.sql.
* Skip null shell parameters.
* Add wfWaitForSlaves() to maintenance/migrateComments.php.
* (T182245) Fix join conditions in ImageListPager.
* (T178626) Revert #contentSub and #jump-to-nav margin changes.
=== MySQL version requirement in 1.30 ===
As of 1.30, MediaWiki now requires MySQL 5.5.8 or higher (see Compatibility
section).
=== Configuration changes in 1.30 ===
* The "C.UTF-8" locale should be used for $wgShellLocale, if available, to avoid
unexpected behavior when code uses locale-sensitive string comparisons. For
example, the Scribunto extension considers "bar" < "Foo" in most locales
since it ignores case.
* $wgShellLocale now affects LC_ALL rather than only LC_CTYPE. See
documentation of $wgShellLocale for details.
* $wgShellLocale is now applied for all requests. wfInitShellLocale() is
deprecated and a no-op, as it is no longer needed.
* $wgJobClasses may now specify callback functions as an alternative to plain
class names. This is intended for extensions that want control over the
instantiation of their jobs, to allow for proper dependency injection.
* $wgResourceModules may now specify callback functions as an alternative
to plain class names, using the 'factory' key in the module description
array. This allows dependency injection to be used for ResourceLoader modules.
* $wgExceptionHooks has been removed.
* (T163562) $wgRangeContributionsCIDRLimit was introduced to control the size
of IP ranges that can be queried at Special:Contributions.
* (T45547) $wgUsePigLatinVariant added (off by default).
* (T152540) MediaWiki now supports a section ID escaping style that allows to display
non-Latin characters verbatim on many modern browsers. This is controlled by the
new configuration setting, $wgFragmentMode.
* $wgExperimentalHtmlIds is now deprecated and will be removed in a future version,
use $wgFragmentMode to migrate off it to a modern alternative.
* $wgExternalInterwikiFragmentMode was introduced to control how fragments in
sinterwikis going outside of current wiki farm are encoded.
* (T120333) Soft-deprecated the use of PHP extension 'mysql' in favor of 'mysqli'.
This PHP extension was deprecated in PHP 5.5 and removed in PHP 7.0. MediaWiki
auto-selects the 'mysqli' driver since MediaWiki 1.22, except if explicitly
requested through the configuration parameter $wgDBservers.
* $wgOOUIEditPage was removed, as it is now the default. This was documented as a
temporary variable during the migration period.
=== New features in 1.30 ===
* (T37247) Output from Parser::parse() will now be wrapped in a div with
class="mw-parser-output" by default. This may be changed or disabled using
ParserOptions::setWrapOutputClass().
* (T163562) Added ability to search for contributions within an IP ranges
at Special:Contributions.
* Added 'ChangeTagsAllowedAdd' hook, enabling extensions to allow software-
specific tags to be added by users.
* Added a 'ParserOptionsRegister' hook to allow extensions to register
additional parser options.
* (T45547) Included Pig Latin, a language game in English, as a
LanguageConverter variant. This allows English-speaking developers
to develop and test LanguageConverter more easily. Pig Latin can be
enabled by setting $wgUsePigLatinVariant to true.
* Added RecentChangesPurgeRows hook to allow extensions to purge data that
depends on the recentchanges table.
* Added JS config values wgDiffOldId/wgDiffNewId to the output of diff pages.
* (T2424) Added direct unwatch links to entries in Special:Watchlist (if the
'watchlistunwatchlinks' preference option is enabled). With JavaScript
enabled, these links toggle so the user can also re-watch pages that have
just been unwatched.
* Added $wgParserTestMediaHandlers, where mock media handlers can be passed to
MediaHandlerFactory for parser tests.
* Edit summaries, block reasons, and other "comments" are now stored in a
separate database table. Use the CommentFormatter class to access them.
** This is currently gated by $wgCommentTableSchemaMigrationStage. Most wikis
can set this to MIGRATION_NEW and run maintenance/migrateComments.php as
soon as any necessary extensions are updated.
* (T138166) Added ability for users to prohibit other users from sending them
emails with Special:Emailuser. Can be enabled by setting
$wgEnableUserEmailBlacklist to true.
* (T67297) $wgBrowserBlacklist is deprecated, and changing it will have no effect.
Instead, users using browsers that do not support Unicode will be unable to edit
and should upgrade to a modern browser instead.
=== External library changes in 1.30 ===
==== Upgraded external libraries ====
* Updated justinrainbow/json-schema from v3.0 to v5.2.
* Updated mediawiki/mediawiki-codesniffer from v0.7.2 to v0.12.0.
* Updated wikimedia/composer-merge-plugin from v1.4.0 to v1.4.1.
* Updated wikimedia/relpath from v1.0.3 to v2.0.0.
* Updated OOjs from v2.0.0 to v2.1.0.
* Updated OOUI from v0.21.1 to v0.23.0.
* Updated QUnit from v1.23.1 to v2.4.0.
* Updated phpunit/phpunit from v4.8.35 to v4.8.36.
* Upgraded Moment.js from v2.15.0 to v2.19.3.
==== New external libraries ====
* The class \TestingAccessWrapper has been moved to the external library
wikimedia/testing-access-wrapper and renamed \Wikimedia\TestingAccessWrapper.
* Purtle, a fast, lightweight RDF generator.
==== Removed and replaced external libraries ====
* …
=== Bug fixes in 1.30 ===
* (T151633) Ordered list items use now Devanagari digits in Nepalese
(thanks to Sfic)
=== Action API changes in 1.30 ===
* (T37247) action=parse output will be wrapped in a div with
class="mw-parser-output" by default. This may be changed or disabled using
the new 'wrapoutputclass' parameter.
* When errorformat is not 'bc', abort reasons from action=login will be
formatted as specified by the error formatter parameters.
* action=compare can now handle arbitrary text, deleted revisions, and
returning users and edit comments.
* (T164106) The 'rvdifftotext', 'rvdifftotextpst', 'rvdiffto',
'rvexpandtemplates', 'rvgeneratexml', 'rvparse', and 'rvprop=parsetree'
parameters to prop=revisions are deprecated, as are the similarly named
parameters to prop=deletedrevisions, list=allrevisions, and
list=alldeletedrevisions. Use action=compare, action=parse, or
action=expandtemplates instead.
=== Action API internal changes in 1.30 ===
* ApiBase::getDescriptionMessage() and the "apihelp-*-description" messages are
deprecated. The existing message should be split between "apihelp-*-summary"
and "apihelp-*-extended-description".
* (T123931) Individual values of multi-valued parameters can now be marked as
deprecated.
=== Languages updated in 1.30 ===
MediaWiki supports over 350 languages. Many localisations are updated
regularly. Below only new and removed languages are listed, as well as
changes to languages because of Phabricator reports.
* Added: kbp (Kabɩyɛ / Kabiyè)
* Added: skr (Saraiki, سرائیکی)
* Added: tay (Tayal / Atayal)
* Removed: tokipona (Toki Pona)
==== Pig Latin added ====
* (T45547) Added Pig Latin, a made-up English variant (en-x-piglatin),
for easier variant development and testing. Disabled by default. It can be
enabled by setting $wgUsePigLatinVariant to true.
=== Other changes in 1.30 ===
* The use of an associative array for $wgProxyList, where the IP address is in
the key instead of the value, is deprecated (e.g. [ '127.0.0.1' => 'value' ]).
Please convert these arrays to indexed/sequential ones (e.g. [ '127.0.0.1' ]).
* mw.user.bucket (deprecated in 1.23) was removed.
* LoadBalancer::getServerInfo() and LoadBalancer::setServerInfo() are
deprecated. There are no known callers.
* File::getStreamHeaders() was deprecated.
* MediaHandler::getStreamHeaders() was deprecated.
* Title::canTalk() was deprecated. The new Title::canHaveTalkPage() should be
used instead.
* MWNamespace::canTalk() was deprecated. The new MWNamespace::hasTalkNamespace()
should be used instead.
* The ExtractThumbParameters hook (deprecated in 1.21) was removed.
* The OutputPage::addParserOutputNoText and ::getHeadLinks methods (both
deprecated in 1.24) were removed.
* wfMemcKey() and wfGlobalCacheKey() were deprecated. BagOStuff::makeKey() and
BagOStuff::makeGlobalKey() should be used instead.
* (T146304) Preprocessor handling of LanguageConverter markup has been improved.
As a result of the new uniform handling, '-{' may need to be escaped
(for example, as '-<nowiki/>{') where it occurs inside template arguments
or wikilinks.
* (T163966) Page moves are now counted as edits for the purposes of
autopromotion, i.e., they increment the user_editcount field in the database.
* Two new hooks, LogEventsListLineEnding and NewPagesLineEnding, were added for
manipulating Special:Log and Special:NewPages lines.
* The OldChangesListRecentChangesLine, EnhancedChangesListModifyLineData,
PageHistoryLineEnding, ContributionsLineEnding and DeletedContributionsLineEnding
hooks have an additional parameter, for manipulating HTML data attributes of
RC/history lines. EnhancedChangesListModifyBlockLineData can do that via the
$data['attribs'] subarray.
* (T130632) The OutputPage::enableTOC() method was removed.
* WikiPage::getParserOutput() will now throw an exception if passed
ParserOptions that would pollute the parser cache. Callers should use
WikiPage::makeParserOptions() to create the ParserOptions object and only
change options that affect the parser cache key.
* Article::viewRedirect() is deprecated.
* IP::isValidBlock() was deprecated. Use the equivalent IP::isValidRange().
* DeprecatedGlobal no longer supports passing in a direct value, it requires a
callable factory function or a class name.
* The $parserMemc global, wfGetParserCacheStorage(), and ParserCache::singleton()
are all deprecated. The main ParserCache instance should be obtained from
MediaWikiServices instead. Access to the underlying BagOStuff is possible
through the new ParserCache::getCacheStorage() method.
* .mw-ui-constructive CSS class (deprecated in 1.27) was removed.
* Sanitizer::escapeId() was deprecated, use escapeIdForAttribute(),
escapeIdForLink() or escapeIdForExternalInterwiki() instead.
* Title::escapeFragmentForURL() was deprecated, use one of the aforementioned
Sanitizer functions or, if possible, Title::getFragmentForURL().
* Second parameter to Sanitizer::escapeIdReferenceList() ($options) now does
nothing and is deprecated.
* mw.util.escapeId() was deprecated, use escapeIdForAttribute() or
escapeIdForLink().
* MagicWord::replaceMultiple() (deprecated in 1.25) was removed.
* WikiImporter now requires the second parameter to be an instance of the Config,
class. Prior to that, the Config parameter was optional (a behavior deprecated in
1.25).
* Removed 'jquery.mwExtension' module. (deprecated since 1.26)
* mediawiki.ui: Deprecate greys, which are not part of WikimediaUI color palette
any more.
* CdbReader, CdbWriter, CdbException classes (deprecated in 1.25) were removed.
The namespaced classes in the Cdb namespace should be used instead.
* IPSet class (deprecated in 1.26) was removed. The namespaced IPSet\IPSet
should be used instead.
* RunningStat class (deprecated in 1.27) was removed. The namespaced
RunningStat\RunningStat should be used instead.
* MWMemcached and MemCachedClientforWiki classes (deprecated in 1.27) were removed.
The MemcachedClient class should be used instead.
* EditPage underwent some refactoring and deprecations:
* EditPage::isOouiEnabled() is deprecated and will always return true.
* EditPage::getSummaryInput() and ::getSummaryInputOOUI() are deprecated. Please
use ::getSummaryInputWidget() instead.
* EditPage::getCheckboxes() and ::getCheckboxesOOUI() are deprecated. Please
use ::getCheckboxesWidget() instead.
* Creating an EditPage instance without calling EditPage::setContextTitle() should
be avoided and will be deprecated in a future release.
* EditPage::safeUnicodeInput() and ::safeUnicodeOutput() are deprecated and no-ops.
* EditPage::$isCssJsSubpage, ::$isCssSubpage, and ::$isJsSubpage are deprecated. The
corresponding methods from Title should be used instead.
* EditPage::$isWrongCaseCssJsPage is deprecated. There is no replacement.
* EditPage::$mArticle and ::$mTitle are deprecated for public usage. The getters
::getArticle() and ::getTitle() should be used instead.
* Trying to control or fake EditPage context by overriding $wgUser, $wgRequest, $wgOut,
and $wgLang is no longer supported and won't work. The IContextSource returned from
EditPage::getContext() must be modified instead.
* Parser::getRandomString() (deprecated in 1.26) was removed.
* Parser::uniqPrefix() (deprecated in 1.26) was removed.
* Parser::extractTagsAndParams() now only accepts three arguments. The fourth,
$uniq_prefix was deprecated in 1.26 and has now been removed.
* (T172514) The following tables have had their UNIQUE indexes turned into proper
PRIMARY KEYs for increased maintainability: categorylinks, imagelinks, iwlinks,
langlinks, log_search, module_deps, objectcache, pagelinks, query_cache, site_stats,
templatelinks, text, transcache, user_former_groups, user_properties.
* IDatabase::nextSequenceValue() is no longer needed by any database backends
(formerly it was needed by PostgreSQL and Oracle), and is now deprecated.
* (T146591) The lc_lang_key index on the l10n_cache table has been changed into a
PRIMARY KEY.
* (T157227) bot_password.bp_user, change_tag.ct_log_id, change_tag.ct_rev_id,
page_restrictions.pr_user, tag_summary.ts_log_id, tag_summary.ts_rev_id and
user_properties.up_user have all been made unsigned on MySQL.
* DB_SLAVE is deprecated. DB_REPLICA should be used instead.
* wfUsePHP() is deprecated.
* wfFixSessionID() was removed.
* wfShellExec() and related functions are deprecated, use Shell::command(). This also
slightly changes the behavior of how execution time limits are calculated when only
some of defaults are overridden per-call. When in doubt, always override both wall
clock and CPU time.
* (T138166) SpecialEmailUser::getTarget() now requires a second argument, the sending
user object. Using the method without the second argument is deprecated.
* (T67297) Browsers that don't support Unicode will have their edits rejected.
* (T178450) The module 'jquery.badge' is deprecated and will be removed in a future
release. For notifying the user of an event, the Notifications ("Echo") system
should be used instead.
* (T178451) SECURITY: Potential XSS when $wgShowExceptionDetails = false and browser
sends non-standard url escaping.
* (T165846) SECURITY: BotPassword login attempts weren't throttled.
= MediaWiki 1.29 =
== MediaWiki 1.29.2 ==
This is a security and maintenance release of the MediaWiki 1.29 branch.
=== Changes since 1.29.1 ===
* (T166757) Avoid scoped lock errors in Category::refreshCounts() due to nesting.
* (T175439) Unbreak Postgres Updater when setting defaults for a column.
* (T160298) Remove use of implicitGroupBy() in ActiveUsersPager.
* Fixed login button label to accept RawMessage.
* Fixed case of SpecialRecentChanges class usage.
* (T174255) Declare uploadCount property in importDump.php.
* (T163646) Pass a string not an int to mysql_real_escape_string().
* (T180143) Bump justinrainbow/json-schema development dependency to ~5.2.
* Updated dev dependancy phpunit/phpunit from v4.8.35 to v4.8.36.
* (T178451) SECURITY: Potential XSS when $wgShowExceptionDetails = false and browser
sends non-standard url escaping.
* (T165846) SECURITY: BotPassword login attempts weren't throttled.
* (T128209) SECURITY: Reflected File Download from api.php.
* (T134100) SECURITY: Do not reveal if user exists during login failure.
* (T176247) SECURITY: Ensure Message::rawParams can't lead to XSS.
* (T125163) SECURITY: Make anchor for headlines escape > and <.
* (T180237) SECURITY: Protect vendor folder with .htaccess.
* (T180231) SECURITY: Remove PHPUnit file with known RCE if exists in update.php.
* (T124404) SECURITY: XSS in langconverter when regex hits pcre.backtrack_limit.
* (T119158) SECURITY: Handle -{}- syntax in attributes safely.
* (T180488) (T125177) "api.log contains passwords in plaintext" wasn't correctly fixed in all
branches in the previous security release.
== MediaWiki 1.29.1 ==
This is a maintenance release of the MediaWiki 1.29 branch.
The SpamBlacklist and PdfHandler extensions were missing from the generated
packages.
=== Changes since 1.29.1 ===
* (T164999) Define mw.Upload.Dialog.static.name in mediawiki.Upload.Dialog.js.
* (T172061) Fix fatal when passing a category to refreshLinks.php.
== MediaWiki 1.29.0 ==
=== Configuration changes in 1.29 ===
* Default cookie expiration time has been reduced to 30 days. Login cookie
expiration time is kept at 180 days.
* A new configuration variable has been added: $wgCookieSetOnAutoblock. This
determines whether to set a cookie when a user is autoblocked. Doing so means
that a blocked user, even after logging out and moving to a new IP address,
will still be blocked.
* The resetpassword right and associated password reset capture feature has
been removed.
* The $error parameter to the EmailUser hook should be set to a Status object
or boolean false. This should be compatible with at least MediaWiki 1.23 if
not earlier. Returning a raw HTML string is now deprecated.
* The $message parameter to the ApiCheckCanExecute hook should be set to an
ApiMessage. This is compatible with MediaWiki 1.27 and later. Returning a
code for ApiBase::parseMsg() will no longer work.
* ApiBase::$messageMap is no longer public. Code attempting to access it will
result in a PHP fatal error.
* $wgUserEmailUseReplyTo is now true by default to work around restrictive DMARC
policies.
* Subpages are now enabled by default in the Template namespace. Set
$wgNamespacesWithSubpages[NS_TEMPLATE] to false to keep the old behavior.
* $wgRunJobsAsync is now false by default (T142751). This change only affects
wikis with $wgJobRunRate > 0.
* (T158474) "Unknown user" has been added to $wgReservedUsernames.
* (T156983) $wgRateLimitsExcludedIPs now accepts CIDR ranges as well as single IPs.
* $wgDummyLanguageCodes is deprecated. Additional language code mappings may be
added to $wgExtraLanguageCodes instead.
* (T161453) LocalisationCache will no longer use the temporary directory in it's
fallback chain when trying to work out where to write the cache.
* The user right 'editusercssjs' (deprecated in 1.16) was removed. Use
'editusercss' and 'edituserjs' in $wgGroupPermissions and elsewhere instead.
=== New features in 1.29 ===
* (T5233) A cookie can now be set when a user is autoblocked, to track that user
if they move to a new IP address. This is disabled by default.
* Added ILocalizedException interface to standardize the use of localized
exceptions, largely so the API can handle them more sensibly.
* Blocks created automatically by MediaWiki, such as for configured proxies or
dnsbls, are now indicated as such and use a new i18n message when displayed.
* Added new $wgHTTPImportTimeout setting. Sets timeout for
downloading the XML dump during a transwiki import in seconds.
* Parser limit report is now available in machine-readable format to JavaScript
via mw.config.get('wgPageParseReport').
* Added $wgSoftBlockRanges, to allow for automatically blocking anonymous edits
from certain IP ranges (e.g. private IPs).
* (T59603) Added new magic word {{PAGELANGUAGE}} which returns the language code
of the page being parsed.
* HTML5 form validation attributes will no longer be suppressed. Originally
browsers had poor support for them, but modern browsers handle them fine.
This might affect some forms that used them and only worked because the
attributes were not actually being set.
* Expiry times can now be specified when users are added to user groups.
* Completely new user interface for the RecentChanges page, which
structures filters into user-friendly groups. This has corresponding
changes to how filters are registered by core and extensions.
* The edit form now uses pretty OOjs UI buttons, checkboxes and summary input.
Because this change can cause problems for extensions and on-wiki
scripts depending on the exact HTML, the old version is still available
and can be used by setting $wgOOUIEditPage = false; in LocalSettings.php.
This will be removed later and OOjs UI will become the only option.
To make testing easier, users can also force either mode by adding
&ooui=true or &ooui=false to the action=edit URL.
=== External library changes in 1.29 ===
==== Upgraded external libraries ====
* Updated QUnit from v1.22.0 to v1.23.1.
* Updated cssjanus from v1.1.2 to v1.2.0.
* Updated psr/log from v1.0.0 to v1.0.2.
* Update Moment.js from v2.8.4 to v2.15.0.
* Updated oyejorge/less.php from v1.7.0.10 to v1.7.0.14.
* Updated monolog from v1.18.2 to 1.22.1.
* Updated wikimedia/composer-merge-plugin from v1.3.1 to v1.4.0.
* Updated OOjs from v1.1.10 to v2.0.0.
* Updated jQuery from v1.11.3 to v3.2.1 (including jQuery Migrate v3.0.0).
==== New external libraries ====
* Added wikimedia/timestamp v1.0.0.
* Added wikimedia/remex-html v1.0.1.
==== Removed and replaced external libraries ====
=== Bug fixes in 1.29 ===
* (T62604) Core parser functions returning a number now format the number according
to the page content language, not wiki content language.
* (T27187) Search suggestions based on jquery.suggestions will now correctly only
highlight prefix matches in the results.
* (T157035) "new mw.Uri()" was ignoring options when using default URI.
* Special:Allpages can no longer be filtered by redirect in miser mode.
* (T160519) CACHE_ANYTHING will not be CACHE_ACCEL if no accelerator is installed.
* (T109140) (T122209) SECURITY: Special:UserLogin and Special:Search allow redirect
to interwiki links.
* (T144845) SECURITY: XSS in SearchHighlighter::highlightText() when
$wgAdvancedSearchHighlighting is true.
* (T125177) SECURITY: API parameters may now be marked as "sensitive" to keep
their values out of the logs.
* (T150044) SECURITY: "Mark all pages visited" on the watchlist now requires a CSRF
token.
* (T156184) SECURITY: Escape content model/format url parameter in message.
* (T151735) SECURITY: SVG filter evasion using default attribute values in DTD
declaration.
* (T161453) SECURITY: LocalisationCache will no longer use the temporary directory
in it's fallback chain when trying to work out where to write the cache.
* (T48143) SECURITY: Spam blacklist ineffective on encoded URLs inside file inclusion
syntax's link parameter.
* (T108138) SECURITY: Sysops can undelete pages, although the page is protected against
it.
=== Action API changes in 1.29 ===
* Submitting sensitive authentication request parameters to action=login,
action=clientlogin, action=createaccount, action=linkaccount, and
action=changeauthenticationdata in the query string is now an error. They
should be submitted in the POST body instead.
* The capture option for action=resetpassword has been removed
* action=clearhasmsg now requires a POST.
* (T47843) API errors and warnings may be requested in non-English languages
using the new 'errorformat', 'errorlang', and 'errorsuselocal' parameters.
* API error codes may have changed. Most notably, errors from modules using
parameter prefixes (e.g. all query submodules) will no longer be prefixed.
* ApiPageSet-using modules will report the 'invalidreason' using the specified
'errorformat'.
* action=emailuser may return a "Warnings" status, and now returns 'warnings' and
'errors' subelements (as applicable) instead of 'message'.
* action=imagerotate returns an 'errors' subelement rather than 'errormessage'.
* action=move now reports errors when moving the talk page as an array under
key 'talkmove-errors', rather than using 'talkmove-error-code' and
'talkmove-error-info'. The format for subpage move errors has also changed.
* action=revisiondelete no longer includes a "rendered" property on warnings
and errors for each item. Use errorformat=wikitext if you're wanting parsed
output.
* action=rollback no longer returns a "messageHtml" property. Use
errorformat=html if you're wanting HTML formatting of error messages.
* action=upload now reports optional stash failures as an array under key
'stasherrors' rather than a 'stashfailed' text string.
* action=watch reports 'errors' and 'warnings' instead of a single 'error', and
no longer returns a 'message' on success.
* Added action=validatepassword to validate passwords for the account creation
and password change forms.
* action=purge now requires a POST.
* There is a new `languagevariants` siprop for action=query&meta=siteinfo,
which returns a list of languages with active LanguageConverter instances.
* action=query&query=allpages will no longer filter redirects using a database
query in miser mode. This may result in less results being returned than were
requested.
=== Action API internal changes in 1.29 ===
* New methods were added to ApiBase to handle errors and warnings using i18n
keys. Methods for using hard-coded English messages were deprecated:
* ApiBase::dieUsage() was deprecated
* ApiBase::dieUsageMsg() was deprecated
* ApiBase::dieUsageMsgOrDebug() was deprecated
* ApiBase::getErrorFromStatus() was deprecated
* ApiBase::parseMsg() was deprecated
* ApiBase::setWarning() was deprecated
* ApiBase::$messageMap is no longer public. Code attempting to access it will
result in a PHP fatal error.
* The $message parameter to the ApiCheckCanExecute hook should be set to an
ApiMessage. This is compatible with MediaWiki 1.27 and later. Returning a
code for ApiBase::parseMsg() will no longer work.
* UsageException is deprecated in favor of ApiUsageException. For the time
being ApiUsageException is a subclass of UsageException to allow things that
catch only UsageException to still function properly.
* If, for some strange reason, code was using an ApiErrorFormatter instead of
ApiErrorFormatter_BackCompat, note that the result format has changed and
various methods now take a module path rather than a module name.
* ApiMessageTrait::getApiCode() now strips 'apierror-' and 'apiwarn-' prefixes
from the message key, and maps some message keys for backwards compatibility.
* API parameters may now be marked as "sensitive" to keep their values out of
the logs.
=== Languages updated in 1.29 ===
MediaWiki supports over 350 languages. Many localisations are updated
regularly. Below only new and removed languages are listed, as well as
changes to languages because of Phabricator reports.
* Based as always on linguistic studies on intelligibility and language
knowledge by geography, language fallbacks have been expanded. When a
translation is missing in the user's preferred interface language, the
corresponding translation for the fallback language will be used instead.
English will only be used as last resort when there are no translations.
Some configurations (such as date formats and gender namespaces) have also
been updated when using the fallback language's configuration was inadequate.
The new or reinstated language fallbacks are (after cs ↔ sk in 1.28):
ca ↔ oc; hsb ↔ dsb; io → eo; mdf → ru; pnt → el; roa-tara → it; rup → ro;
sh → bs, sr-el, hr.
* (T137376) New language support: Atikamekw (atj).
* (T163600) New language support: Dinka (din).
* (T155957) Talk Namespaces for Javanese language (jv) have been updated.
==== No fallback for Ukrainian ====
* (T39314) The fallback from Ukrainian to Russian was removed. The Ukrainian
language will now use the default fallback language: English. When a translation
to Ukrainian is not available, an English string will be shown.
=== Other changes in 1.29 ===
* Database::getSearchEngine() (deprecated in 1.28) was removed. Use
SearchEngineFactory::getSearchEngineClass() instead.
* $wgSessionsInMemcached (deprecated in 1.20) was removed. No replacement is
required as all sessions are stored in Object Cache now.
* MWHttpRequest::execute() should be considered to return a StatusValue; the
Status return type is deprecated.
* User::edits() (deprecated in 1.21) was removed.
* Xml::escapeJsString() (deprecated in 1.21) was removed.
* Article::getText() and Article::prepareTextForEdit() (deprecated in 1.21)
were removed.