production.
=== Configuration changes in 1.28 ===
+* $wgSend404Code now affects status code of action=history if the page is not there.
* BREAKING CHANGE: $wgHTTPProxy is now *required* for all external requests
made by MediaWiki via a proxy. Relying on the http_proxy environment
variable is no longer supported.
==== Removed and replaced external libraries ====
=== Bug fixes in 1.28 ===
+* (T146496) action=history pages should return 404 HTTP error code if the page does not exist
* (T137264) SECURITY: XSS in unclosed internal links
* (T133147) SECURITY: Escape '<' and ']]>' in inline <style> blocks
* (T133147) SECURITY: Require login to preview user CSS pages
indicated by a 'fromencoded' boolean alongside the existing 'from' parameter.
* (T28680) action=paraminfo can now return info about all submodules of a
module without listing them all explicitly.
+* (T146770) It is now possible to assert that the current user is a specific
+ named user, using the 'assertuser' parameter.
=== Action API internal changes in 1.28 ===
* Added a new hook, 'ApiMakeParserOptions', to allow extensions to better
interact with ApiParse and ApiExpandTemplates.
* (T139565) SECURITY: API: Generate head items in the context of the given title
* (T115333) SECURITY: Check read permission when loading page content in ApiParse
+* ApiBase::getResultData() was removed (deprecated since 1.25)
* ApiBase::makeHelpArrayToString() was removed (deprecated since 1.25)
* ApiBase::makeHelpMsgParameters() was removed (deprecated since 1.25)
* ApiBase::makeHelpMsg() was removed (deprecated since 1.25)
* IP::isConfiguredProxy() and IP::isTrustedProxy() were removed. Callers should
migrate to using the same functions on a ProxyLookup instance, obtainable from
MediaWikiServices.
+* The ArticleAfterFetchContent, ArticleInsertComplete, ArticleSave, ArticleSaveComplete,
+ ArticleViewCustom, EditPageGetDiffText, EditPageGetPreviewText and ShowRawCssJs hooks
+ will now emit deprecation warnings if used.
== Compatibility ==