For notes on 1.32.x and older releases, see HISTORY.
=== Configuration changes for system administrators in 1.33 ===
+
==== New configuration ====
* $wgEnablePartialBlocks – This enables the Partial Blocks feature, which gives
accounts with block permissions the ability to block users, IPs, and IP ranges
* (T214706) LinksUpdate::getAddedExternalLinks() and
LinksUpdate::getRemovedExternalLinks() were introduced.
* (T213893) Added 'MaintenanceUpdateAddParams' hook
+* (T219655) The MarkPatrolled hook has a new parameter for the tags
+ associated with this entry in the patrol log.
=== External library changes in 1.33 ===
+
==== New external libraries ====
* Added wikimedia/password-blacklist 0.1.4.
* Added guzzlehttp/guzzle 6.3.3.
if entirewatchlist is set, so updates may not be visible immediately
* Block info will be added to "blocked" errors from more modules.
* (T216245) Autoblocks will now be spread by action=edit and action=move.
+* action=query&meta=userinfo has a new uiprop, 'latestcontrib', that returns
+ the date of user's latest contribution.
=== Action API internal changes in 1.33 ===
* A number of deprecated methods for API documentation, intended for overriding
* MessageBlobStore::getBlob(), deprecated in 1.27, has been removed.
Use ::getBlobs() instead.
* The .background-size() LESS mixin, deprecated in 1.27, has been removed.
+* MWNamespace::clearCaches() has been removed. So has the $rebuild parameter
+ to MWNamespace::getCanonicalNamespaces(), which was deprecated since 1.31.
+ Instead, create a new NamespaceInfo, such as by calling
+ resetServiceForTesting( 'NamespaceInfo' ) on a MediaWikiServices.
+ For classes that inherit from MediaWikiTestCase and used setMwGlobals() to
+ modify a variable that affects namespaces, caches will automatically be
+ reset and any calls to MWNamespace::clearCaches() can be removed entirely.
=== Deprecations in 1.33 ===
* The configuration option $wgUseESI has been deprecated, and is expected
* Block::isValid is deprecated, since it is no longer needed in core.
* Calling Maintenance::hasArg() as well as Maintenance::getArg() with no
parameter has been deprecated. Please pass the argument number 0.
+* The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
=== Other changes in 1.33 ===
* (T201747) Html::openElement() warns if given an element name with a space
to page updates: LinksUpdateConstructed, LinksUpdate, LinksUpdateComplete.
LinksUpdateAfterInsert is not triggered since deletions do not cause
insertions into links tables.
+* Category::newFromID( $id )->getID() will now return $id without any
+ validation, to avoid a mostly unnecessary DB query.
+* On Special:Version, the name for an extension can no longer be arbitrary
+ html when no link is specified.
== Compatibility ==
MediaWiki 1.33 requires PHP 7.0.13 or later. Although HHVM 3.18.5 or later is