* $wgBug34832TransitionalRollback has been removed.
* (bug 29472) $wgUseDynamicDates has been removed and its functionality
disabled.
-* $wgVectorUseIconWatch is now enabled by default.
=== New features in 1.21 ===
* (bug 38110) Schema changes (adding or dropping tables, indices and
* (bug 45526) Add QUnit assertion helper "QUnit.assert.htmlEqual" for asserting
structual equality of HTML (ignoring insignificant differences like
quotmarks, order and whitespace in the attribute list).
-* (bug 23393) HTML <hN> headings containing line breaks are now handled
- correctly.
-* (bug 45803) Whitespace within == Headline == syntax and within <hN> headings
- is now non-significant and not preserved in the HTML output.
-* (bug 23343) Implemented ability to apply IP blocks to the contents of X-Forwarded-For headers
- by adding a new configuration variable $wgApplyIpBlocksToXff (disabled by default).
=== Bug fixes in 1.21 ===
+* (bug 42649) PHP Fatal error: Call to a member function isLocal() on a
+ non-object in Title.php
+* (bug 46493) Special:ProtectedPages results in whitepage when a bad title is protected
* (bug 40617) Installer can now customize the logo in LocalSettings.php
* (bug 40353) SpecialDoubleRedirect should support interwiki redirects.
* (bug 40352) fixDoubleRedirects.php should support interwiki redirects.
* (bug 45143) jquery.badge: Treat non-Latin variants of zero as zero as well.
* (bug 46151) mwdocgen.php should not ignore exit code of doxygen command.
* (bug 41889) Fix $.tablesorter rowspan exploding for complex cases.
+* (bug 47489) Installer now automatically selects the next-best database type if
+ the PHP mysql extension is not loaded, preventing fatal errors in some cases.
=== API changes in 1.21 ===
* prop=revisions can now report the contentmodel and contentformat.
* (bug 33304) list=allpages will now find really old indefinite protections.
* (bug 45937) meta=allmessages will report a syntactically invalid lang as a
proper error instead of as an uncaught exception.
-* (bug 25325) added support for wlshow filtering (bots/anon/minor/patrolled)
- to action=feedwatchlist
-* WDDX formatted output will actually be formatted (and normal output will no
- longer be), and will no longer choke on booleans.
* The JSON output formatter now leaves forward slashes unescaped to improve human
readability of URLs and similar strings. Also, a "utf8" option is now provided
to use UTF-8 encoding instead of hex escape codes for most non-ASCII characters.
-* action=opensearch no longer silently ignores the format parameter.
-* action=opensearch now supports format=jsonfm.
=== API internal changes in 1.21 ===
* For debugging only, a new global $wgDebugAPI removes many API restrictions when true.
- ShowStats -> ShowSiteStats.
* BREAKING CHANGE: (bug 38244) Removed the mediawiki.api.titleblacklist module
and moved it to the TitleBlacklist extension.
-* The Special:ActiveUsers special page was removed.
* BREAKING CHANGE: Implementation of MediaWiki's JS and JSON value encoding
has changed:
** MediaWiki no longer supports PHP installations in which the native JSON
function, which is now deprecated).
* BREAKING CHANGE: The Services_JSON class has been removed. If necessary,
be sure to upgrade affected extensions at the same time (e.g. Collection).
-* Calling Linker methods using a skin will now output deprecation warnings.
-* Pages with a returnto (such as the page when you login or logout), no
- longer have a rel="next" link tag.
== Compatibility ==