For notes on 1.33.x and older releases, see HISTORY.
=== Configuration changes for system administrators in 1.34 ===
+
==== New configuration ====
* …
* …
=== External library changes in 1.34 ===
+
==== New external libraries ====
* …
* …
=== Bug fixes in 1.34 ===
-* …
+* (T222529) If a log entry or page revision is recorded in the database with an
+ empty username, attempting to display it will log an error and return a "no
+ username available" to the user instead of silently displaying nothing or
+ invalid links.
=== Action API changes in 1.34 ===
* The 'recenteditcount' response property from action=query list=allusers,
* Parser class property $mUniqPrefix, deprecated in 1.26, has been removed.
* wfArrayFilter() and wfArrayFilterByKey(), deprecated in 1.32, have been
removed.
+* wfMakeUrlIndexes() function, deprecated in 1.33, have been removed.
+* Method signatures in WatchedItemQueryServiceExtension have changed from taking
+ User objects to taking UserIdentity objects. Extensions implementing this
+ interface need to be changed accordingly.
+* User::getGroupPage() and ::makeGroupLinkHTML(), deprecated in 1.29, have been
+ removed. Use UserGroupMembership::getGroupPage and ::getLink instead.
+* User::makeGroupLinkWiki(), deprecated in 1.29, has been removed. Use
+ UserGroupMembership::getLink() instead.
+* SavepointPostgres, deprecated in 1.31, has been removed.
* …
=== Deprecations in 1.34 ===
-* The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
+* The MWNamespace class is deprecated. Use NamespaceInfo.
* ExtensionRegistry->load() is deprecated, as it breaks dependency checking.
Instead, use ->queue().
-* …
+* User::isBlocked() is deprecated since it does not tell you if the user is
+ blocked from editing a particular page. Use User::getBlock() or
+ PermissionManager::isBlockedFrom() or PermissionManager::userCan() instead.
+* User::isLocallyBlockedProxy and User::inDnsBlacklist are deprecated and moved
+ to the BlockManager as private helper methods.
+* User::isDnsBlacklisted is deprecated. Use BlockManager::isDnsBlacklisted
+ instead.
+* The Config argument to ChangesListSpecialPage::checkStructuredFilterUiEnabled
+ is deprecated. Pass only the User argument.
+* WatchedItem::getUser is deprecated. Use getUserIdentity.
+* Passing a Title as the first parameter to the getTimestampById method of
+ RevisionStore is deprecated. Omit it, passing only the remaining parameters.
+* Title::getPreviousRevisionId and Title::getNextRevisionId are deprecated. Use
+ RevisionLookup::getPreviousRevision and RevisionLookup::getNextRevision.
+* The Title parameter to RevisionLookup::getPreviousRevision and
+ RevisionLookup::getNextRevision is deprecated and should be omitted.
+* MWHttpRequest::factory is deprecated. Use HttpRequestFactory.
+* The Http class is deprecated. For the request, get, and post methods, use
+ HttpRequestFactory. For isValidURI, use MWHttpRequest::isValidURI. For
+ getProxy, use (string)$wgHTTPProxy. For createMultiClient, construct a
+ MultiHttpClient directly.
+* Http::$httpEngine is deprecated and has no replacement. The default 'guzzle'
+ engine will eventually be made the only engine for HTTP requests.
+* RepoGroup::singleton(), RepoGroup::destroySingleton(),
+ RepoGroup::setSingleton(), wfFindFile(), and wfLocalFile() are all
+ deprecated. Use MediaWikiServices instead.
+* The getSubjectPage, getTalkPage, and getOtherPage of Title are deprecated.
+ Use NamespaceInfo's getSubjectPage, getTalkPage, and getAssociatedPage.
=== Other changes in 1.34 ===
* …