HHVM 3.1.
=== Configuration changes in 1.27 ===
+* $wgAllowMicrodataAttributes and $wgAllowRdfaAttributes were removed,
+ now always enabled. If you use RDFa on your wiki, you now have to explicitly
+ set $wgHtml5Version to 'HTML+RDFa 1.0' or 'XHTML+RDFa 1.0'.
* $wgUseLinkNamespaceDBFields was removed.
* Deprecated $wgResourceLoaderMinifierStatementsOnOwnLine and
$wgResourceLoaderMinifierMaxLineLength, because there was little value in
* $wgEnotifUseJobQ was removed and the job queue is always used.
* The functionality of the ApiSandbox extension has been merged into core. The
extension should no longer be used.
+* $wgPreloadJavaScriptMwUtil was removed (deprecated in 1.26).
+ Extensions, skins, gadgets and scripts that use the mediawiki.util module must
+ express a dependency on it.
+* $wgIncludeLegacyJavaScript, deprecated in MediaWiki 1.26, now defaults false.
+ Extensions, skins, gadgets and scripts that need the mediawiki.legacy.wikibits
+ module should express a dependency on it.
+* Removed configuration option $wgCopyrightIcon (deprecated since 1.18). Use
+ $wgFooterIcons['copyright']['copyright'] instead.
=== New features in 1.27 ===
* $wgDataCenterUpdateStickTTL was also added. This decides how long a user
be a good idea, but will log out all current sessions.
* $wgEventRelayerConfig was added, for managing PubSub event relay configuration,
specifically for reliable CDN url purges.
+* Requests have unique IDs, equal to the UNIQUE_ID environment variable (when
+ MediaWiki is behind Apache+mod_unique_id or something similar) or a randomly-
+ generated 24-character string. This request ID is used to annotate log records
+ and error messages. It is available client-side via mw.config.get( 'wgRequestId' ).
+ The request ID supplants exception IDs. Accordingly, MWExceptionHandler::getLogId()
+ is deprecated.
=== External library changes in 1.27 ===
==== Upgraded external libraries ====
* Updated oojs/oojs-ui from v0.12.12 to v0.13.3.
* Updated composer/semver from v1.0.0 to v1.2.0.
-* Update liuggio/statsd-php-client to 1.0.18.
+* Updated liuggio/statsd-php-client to 1.0.18.
+* Updated QUnit from v1.18.0 to v1.22.0.
==== New external libraries ====
* Added wikimedia/base-convert v1.0.1.
** ApiFormatDbg
** ApiFormatTxt
** ApiFormatYaml
+* ApiBase::addTokenProperties() was removed (deprecated since 1.24).
+* ApiBase::getFinalPossibleErrors() was removed (deprecated since 1.24).
+* ApiBase::getFinalResultProperties() was removed (deprecated since 1.24).
+* ApiBase::getRequireAtLeastOneParameterErrorMessages() was removed (deprecated since 1.24).
+* ApiBase::getPossibleErrors() was removed (deprecated since 1.24).
+* ApiBase::getRequireMaxOneParameterErrorMessages() was removed (deprecated since 1.24).
+* ApiBase::getRequireOnlyOneParameterErrorMessages() was removed (deprecated since 1.24).
+* ApiBase::getResultProperties() was removed (deprecated since 1.24).
+* ApiBase::getTitleOrPageIdErrorMessage() was removed (deprecated since 1.24).
+* ApiBase::parseErrors() was removed (deprecated since 1.24).
* ApiQueryBase::titleToKey(), ApiQueryBase::keyToTitle() and
ApiQueryBase::keyPartToTitle() all removed (deprecated since 1.24).
* ApiQueryBase::checkRowCount() was removed (deprecated since 1.24).
* ApiQueryBase::getDirectionDescription() was removed (deprecated since 1.25).
+* ApiQuery::getGenerators() was removed (deprecated since 1.21).
* ApiQuery::getModules() was removed (deprecated since 1.21).
+* ApiQuery::getModuleType() was removed (deprecated since 1.21).
+* ApiQuery::setGeneratorContinue() was removed (deprecated since 1.24).
* ApiMain::getModules() was removed (deprecated since 1.21).
* ApiBase::getVersion() was removed (deprecated since 1.21).
+* ApiMain::getShowVersions() was removed (deprecated in 1.21).
+* ApiMain::addModule() was removed (deprecated in 1.21).
+* ApiMain::addFormat() was removed (deprecated in 1.21).
+* ApiMain::getFormats() was removed (deprecated in 1.21).
+* ApiPageSet::finishPageSetGeneration() was removed (deprecated in 1.21).
=== Languages updated in 1.27 ===
changes to languages because of Phabricator reports.
* (T113688) Change default numerals from Gurmukhi to Arabic for Punjabi locale.
+* (T116020) Aliases of magic words in MessagesXx.php are sorted by usage.
=== Other changes in 1.27 ===
* ProfilerOutputUdp was removed. Note that there is a ProfilerOutputStats class.
a user forgot password/account was stolen.
* wfCheckEntropy() was removed (deprecated in 1.27).
* Browser support for Internet Explorer 8 lowered from Grade A to Grade C.
+* ContentHandler::supportsCategories method added. Default is true.
+ CategoryMembershipChangeJob updates are skipped for content that
+ does not support categories.
+* wikidiff difference engine is no longer supported, anyone still using it are encouraged
+ to upgrade to wikidiff2 which is actively maintained and has better package availability.
+* Database logic was removed from WatchedItem and a WatchedItemStore was created:
+** WatchedItem::IGNORE_USER_RIGHTS and WatchedItem::CHECK_USER_RIGHTS were deprecated.
+ User::IGNORE_USER_RIGHTS and User::CHECK_USER_RIGHTS were introduced.
+** WatchedItem::fromUserTitle was deprecated in favour of the constructor.
+** WatchedItem::resetNotificationTimestamp was deprecated.
+** WatchedItem::batchAddWatch was deprecated.
+** WatchedItem::addWatch was deprecated.
+** WatchedItem::removeWatch was deprecated.
+** WatchedItem::isWatched was deprecated.
+** WatchedItem::duplicateEntries was deprecated.
+** EmailNotification::updateWatchlistTimestamp was deprecated.
+** User::getWatchedItem was removed.
+* Unit tests don't work with external PHPUnit anymore, Composer is now the only supported
+ way. Run `composer install` to install it and other dev dependencies to run unit tests.
+* wl_id field added to the watchlist table.
+* Revision::getRawText() was removed (deprecated since 1.21).
+* WikiPage::replaceSection() was removed (deprecated since 1.21).
+* Article::replaceSection() was removed (deprecated since 1.21).
+* Language::getLangObj() was removed (deprecated since 1.24).
+* Language::getLanguageName() was removed (deprecated since 1.20).
+* Language::getLanguageNames() was removed (deprecated since 1.20).
+* Language::getTranslatedLanguageNames() was removed (deprecated since 1.20).
+* Language::specialPage() was removed (deprecated since 1.24).
+* MediaWikiTestCase::assertException() was removed (deprecated since 1.22).
+* OutputPage::getHeadItems() was removed (deprecated since 1.24).
+* OutputPage::getScript() was removed (deprecated since 1.24).
+* OutputPage::out() was removed (deprecated since 1.22).
+* OutputPage::setAllowedModules() was removed (deprecated since 1.24).
+* UserrightsPage::makeGroupNameListForLog() was removed (deprecated since 1.21).
+* MediaWikiSite::newFromGlobalId() was removed (deprecated since 1.21).
+* Title::newFromRedirect() was removed (deprecated since 1.21).
+* Skin::commonPrintStylesheet() was removed (deprecated since 1.22).
+* Skin::getCommonStylePath() was removed (deprecated since 1.24).
+* Skin::newFromKey() was removed (deprecated since 1.24).
+* Skin::getUsableSkins() was removed (deprecated since 1.23).
+* LoadBalancer::pickRandom() was removed (deprecated in 1.21).
+* Article::getUndoText() and WikiPage::getUndoText were removed (deprecated since
+ 1.21).
+* DifferenceEngine::setText() was removed (deprecated in 1.21).
+* Title::newFromRedirectArray() was removed (deprecated in 1.21).
== Compatibility ==