MediaWiki 1.26, in where ResourceLoader became fully asynchronous.
* $wgMasterWaitTimeout was removed (deprecated in 1.24).
* Fields in ParserOptions are now private. Use the accessors instead.
+* Custom LESS functions (defined via $wgResourceLoaderLESSFunctions)
+ have been removed, after being deprecated in 1.24.
+* $wgAlwaysUseTidy has been removed.
+* ResetSessionID hook has been removed. Nothing seems to use it.
+* Certain AuthPlugin methods are deprecated in favor of new hooks:
+** AuthPlugin::initUser() is replaced by LocalUserCreated.
+** AuthPlugin::updateUser() is replaced by UserLoggedIn.
+** AuthPlugin::updateExternalDB() is replaced by the existing UserSaveSettings.
+** AuthPlugin::updateExternalDBGroups() is replaced by UserGroupsChanged.
+** AuthPluginUser::isHidden() is replaced by UserIsHidden.
+** AuthPluginUser::isLocked() is replaced by UserIsLocked.
+* The UserRights hook is deprecated in favor of the new UserGroupsChanged hook.
+* AuthPlugin::initUser() and AuthPlugin::updateUser() should no longer replace
+ the passed User object.
+* $wgBlockAllowsUTEdit is now set to true by default. This allows
+ blocked users to edit their talk pages unless explicitly disabled
+ when they are being blocked.
+* CLDRPluralRule* classes have been replaced with wikimedia/cldr-plural-rule-parser.
=== New features in 1.26 ===
* (T51506) Now action=info gives estimates of actual watchers for a page.
* Caches that need purging ability now use the WANObjectCache interface.
This corresponds to a new $wgMainWANCache setting, which defaults to using
the $wgMainCacheType settings.
+* Added MWTimestamp::getTimezoneString() which returns the localized timezone
+ string, if available. To localize this string, see the comments of
+ $wgLocaltimezone in includes/DefaultSettings.php.
* Callers needing fast light-weight data stores use $wgMainStash to select
the store type from $wgObjectCaches. The default is the local database.
* Interface message overrides in the MediaWiki namespace will now be cached in
for potentially slow POST requests that need to be as atomic as possible.
* ResourceLoader now loads all scripts asynchronously. The top-queue and
startup modules are no longer synchronously loaded.
+* 'mediawiki.ui.button' styles are no longer unconditionally loaded on every
+ page. During the deprecation period, the styles will only be loaded on pages
+ which contain 'mw-ui-button' in their HTML. Starting in 1.28, the styles will
+ only be loaded if explicitly required.
==== External libraries ====
* Update es5-shim from v4.0.0 to v4.1.5.
* Upgrade jQuery Client from v1.0.0 to v2.0.0.
* Added mediawiki/at-ease 1.0.0.
* Update QUnit from v1.17.1 to v1.18.0.
+* Added wikimedia/cldr-plural-rule-parser 1.0.0
=== Bug fixes in 1.26 ===
* (T53283) load.php sometimes sends 304 response without full headers
* (T65198) Talk page tabs now have a "rel=discussion" attribute
* (T98841) {{msgnw:}} now preserves comments even when subst: is not used.
+* (T104142) $wgEmergencyContact and $wgPasswordSender now use their default
+ value if set to an empty string.
=== Action API changes in 1.26 ===
* New-style continuation is now the default for action=continue. Clients may
sometimes being numerically-indexed objects with formatversion=2.
* When errors about users being blocked are returned, they now include
information about the relevant block.
+* (T99926) list=random has higher limits, in line with other API modules.
+* list=random's rnredirect parameter is deprecated in favor of a new
+ rnfilterredir parameter that also allows for listing both redirects and
+ non-redirects.
+* list=random now supports continuation.
+* API responses to GET requests may now include ETag and Last-Modified headers,
+ and will honor corresponding If-None-Match and If-Modified-Since on such
+ requests.
=== Action API internal changes in 1.26 ===
* New metadata item ApiResult::META_KVP_MERGE to allow for merging the KVP key
into the value when the value is an assoc.
+* API action modules may now provide values for the RFC 7232 ETag and
+ Last-Modified headers. The API will check these against If-None-Match and
+ If-Modified-Since request headers on GET requests and avoid executing the
+ module when appropriate.
=== Languages updated in 1.26 ===
** dty (डोटेली/Doteli), thanks to translators जनक राज भट्ट, बिप्लब आनन्द,
मेश सिंह बोहरा, and राम प्रसाद जोशी
** luz (لئری دوٙمینی / Southern Luri)
+** olo (Livvinкarjala / Livvi-Karelian), thanks to translators Denö, Hiloin Natoi,
+ Ilja.mos, and Mashoi7
=== Other changes in 1.26 ===
* ChangeTags::tagDescription() will return false if the interface message
a lengthy deprecation period.
* The ScopedPHPTimeout class was removed.
* Removed maintenance script fixSlaveDesync.php.
+* Watchlist tokens, SpecialResetTokens, and User::getTokenFromOption()
+ are deprecated. Applications using those can work via the OAuth
+ extension instead. New tokens types should not be added.
+* (T36948) The default file revert message's timestamp is now in $wgLocaltimezone,
+ instead of UTC.
+* DatabaseBase::errorCount() was removed (unused).
+* $wgDeferredUpdateList was removed.
+* DeferredUpdates::addHTMLCacheUpdate() was removed.
+* The default name of the 'suppress' group page has been changed from
+ 'Project:Oversight' to 'Project:Suppress'.
+* (T84937) Free external links ("autolinked" urls) will now be terminated
+ by and HTML entity encodings of  , <, and >.
== Compatibility ==