* $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.
=== New features in 1.31 ===
* Wikimedia\Rdbms\IDatabase->select() and similar methods now support
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.
=== External library changes in 1.31 ===
==== Upgraded external libraries ====
* Updated jquery.chosen from v0.9.14 to v1.8.2.
* Updated composer/spdx-licenses from 1.1.4 to
- 1.2.0 (development dependency).
+ 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 1.0.5.
* …
==== New external libraries ====
+* Added wikimedia/object-factory 1.0.0
* …
==== Removed and replaced external libraries ====
* (T180052) Mirandese (mwl) now supports gendered NS_USER/NS_USER_TALK namespaces.
* (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).
=== Other changes in 1.31 ===
* Introducing multi-content-revision capability into the storage layer. For details,
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() was deprecated in favour of Skin::msg() parameters.
+* MediaWikiI18N::set() was 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.
+* ParserOutput objects 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.
+* \ObjectFactory (no namespace) is deprecated, the namespaced \Wikimedia\ObjectFactory
+ from the wikimedia/object-factory library should be used instead.
+* CommentStore::newKey is deprecated. Get an instance from MediaWikiServices instead.
+* 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 method ResourceLoaderModule::getPosition(), deprecated in 1.29, has been removed.
+* The DeferredStringifier class is deprecated, use Message::listParam() instead.
== Compatibility ==
MediaWiki 1.31 requires PHP 5.5.9 or later. Although HHVM 3.18.5 or later is supported,