THIS IS NOT A RELEASE YET
-MediaWiki 1.33 is an alpha-quality branch and is not recommended for use in
-production.
+MediaWiki 1.33 is a pre-release testing branch, and is not recommended for use
+in production.
== Upgrading notes for 1.33 ==
1.33 has several database changes since 1.32, and will not work without schema
For notes on 1.32.x and older releases, see HISTORY.
=== Configuration changes for system administrators in 1.33 ===
+
==== New configuration ====
* $wgEnablePartialBlocks – This enables the Partial Blocks feature, which gives
accounts with block permissions the ability to block users, IPs, and IP ranges
argon2 to be used, by default, it will automatically choose the best available
algorithm depending on which version of PHP you have available. To use this,
you can set `$wgPasswordDefault = 'argon2';`.
+* $wgActorTableSchemaMigrationStage now defaults to reading the new schema.
+ update.php will back-populate the new database fields due to the changed
+ setting, which may take some time on large wikis. You can avoid downtime by
+ following a process like that described in T188327.
==== Removed configuration ====
* $wgTagStatisticsNewTable (T199334) — This temporary setting, added in
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.
* MessageBlobStore::getBlob(), deprecated in 1.27, has been removed.
Use ::getBlobs() instead.
* The .background-size() LESS mixin, deprecated in 1.27, has been removed.
+* ReadOnlyMode::clearCache() and ConfiguredReadOnlyMode::clearCache() have been
+ removed. Use MediaWikiTestCase::overrideMwServices() instead.
=== 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.
+* ResourceLoaderContext::expandModuleNames has been deprecated.
+ Use ResourceLoader::expandModuleNames instead.
=== Other changes in 1.33 ===
* (T201747) Html::openElement() warns if given an element name with a space
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