+* Hook UnknownAction (deprecated in 1.19) was actually deprecated (it will now
+ emit warnings). Create a subclass of Action and add it to $wgActions instead.
+* WikiRevision::getText() (deprecated since 1.21) is no longer marked deprecated.
+* Linker::getInterwikiLinkAttributes() (deprecated since 1.25) was removed.
+* Linker::getInternalLinkAttributes() (deprecated since 1.25) was removed.
+* Linker::getInternalLinkAttributesObj() (deprecated since 1.25) was removed.
+* Linker::getLinkAttributesInternal() (deprecated since 1.25) was removed.
+* RedisConnectionPool::handleException (deprecated since 1.23) was removed.
+* The static properties mw.Api.errors and mw.Api.warnings, containing incomplete
+ and outdated lists of errors/warnings returned by the API, are now deprecated.
+* wiki.phtml entry point was removed. Refer to index.php instead. If you want "wiki.phtml"
+ URLs to continue to work, set up redirects. In Apache, this can be done by enabling
+ mod_rewrite and adding the following rules to your configuration:
+
+ RewriteEngine On
+ RewriteBase /
+ RewriteRule ^/w/wiki\.phtml$ /w/index.php [R=301,L]
+* Hook ArticleAfterFetchContent (deprecated in 1.21) was removed.
+ Use ArticleAfterFetchContentObject instead.
+* Hook ArticleInsertComplete (deprecated in 1.21) was removed.
+ Use PageContentInsertComplete instead.
+* Hook ArticleSave (deprecated in 1.21) was removed.
+ Use PageContentSave instead.
+* Hook ArticleSaveComplete (deprecated in 1.21) was removed.
+ Use PageContentSaveComplete instead.
+* Hook EditFilterMerged (deprecated in 1.21) was removed.
+ Use EditFilterMergedContent instead.
+* Hook EditPageGetPreviewText (deprecated in 1.21) was removed.
+ Use EditPageGetPreviewContent instead.
+* Hook TitleIsCssOrJsPage (deprecated in 1.21) was removed.
+ Use ContentHandlerDefaultModelFor instead.
+* Hook TitleIsWikitextPage (deprecated in 1.21) was removed.
+ Use ContentHandlerDefaultModelFor instead.
+* Article::getContent() (deprecated in 1.21) was removed.
+* Revision::getText() (deprecated in 1.21) was removed.
+* Article::doEdit() and WikiPage::doEdit() (deprecated in 1.21) were removed.
+* Parser::replaceUnusualEscapes() (deprecated in 1.24) was removed.
+* Article::doEditContent() was marked as deprecated, to be removed in 1.30
+ or later.
+* ContentHandler::runLegacyHooks() was removed.
+* refreshLinks.php now can be limited to a particular category with --category=...
+ or a tracking category with --tracking-category=...