revision comparison pages using syntax such as [[Special:Diff/12345]],
[[Special:Diff/12345/prev]] or [[Special:Diff/12345/98765]].
* New user accounts' personal and talk pages are now watched by them by default.
+* Added SkinTemplateGetLanguageLink hook to allow changing the html of language
+ links.
+* Added MessageCache::get hook as a new way to customize messages across
+ multiple sites.
=== Bug fixes in 1.23 ===
* (bug 41759) The "updated since last visit" markers (on history pages, recent
* (bug 23005) Added action=revisiondelete.
* Added siprop=restrictions to API action=query&meta=siteinfo for querying
possible page restriction (protection) levels and types.
+* Added prop 'limitreportdata' and 'limitreporthtml' to action=parse.
+* (bug 58627) Provide language names on action=parse&prop=langlinks.
+* Deprecated llurl= in favour of llprop=url for action=query&prop=langlinks.
+* Added llprop=langname and llprop=autonym for action=query&prop=langlinks.
=== Languages updated in 1.23 ===
3 headings)" was removed.
* (bug 52810) Preference "Justify paragraphs" was removed.
* OutputPage::showErrorPage raises a notice if arguments are incoherent.
+* Thumbnails that keep failing to render in thumb.php will be rate-limited
+ againt further render attempts for 1 hour. $wgAttemptFailureEpoch can be
+ altered to reset all rate-limited thumbnails at once.
==== Removed classes ====
* FakeMemCachedClient (deprecated in 1.18)