RELEASE-NOTES-1.26

   1 Security reminder: If you have PHP's register_globals option set, you must
   2 turn it off. MediaWiki will not work with it enabled.
   3
   4 == MediaWiki 1.26 ==
   5
   6 THIS IS NOT A RELEASE YET
   7
   8 MediaWiki 1.26 is an alpha-quality branch and is not recommended for use in
   9 production.
  10
  11 === Configuration changes in 1.26 ===
  12 * $wgEnableParserCache was deprecated, set $wgParserCacheType to CACHE_NONE
  13   instead if you want to disable the parser cache.
  14 * New-style continuation is now the default for API action=continue. Clients may
  15   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  16   new style is encouraged as it's harder to implement incorrectly.
  17 * Deprecated API formats dump and wddx have been completely removed.
  18
  19 === New features in 1.26 ===
  20 * (T51506) Now action=info gives estimates of actual watchers for a page.
  21   See $wgRCMaxAge, $wgWatchersMaxAge and $wgUnwatchedPageSecret
  22   to learn how to configure if needed.
  23 * Change tags can now be hidden in the interface by disabling the associated
  24   "tag-<id>" interface message.
  25 * ':' (colon) is now invalid in usernames for new accounts. Existing accounts
  26   are not affected.
  27 * Added a new hook, 'LogException', to log exceptions in nonstandard ways.
  28 * Revive the 'SpecialSearchResultsAppend' hook which occurs after the list of
  29   search results are rendered. The initial use case is to append a "give us
  30   feedback" link beneath the search results.
  31 * Added a new hook, 'RejectParserCacheValue', which allows extensions to
  32   reject an otherwise-successful parser cache lookup. The intent is to allow
  33   extensions to manage the eviction of archaic HTML output from the cache.
  34 * (T68699) The expiration of the UserID and Token login cookies
  35   ($wgExtendedLoginCookieExpiration) can be configured independently of the
  36   expiration of all other cookies ($wgCookieExpiration).
  37 * (T50519) Support for generating JPEG/PNG thumbnails from WebP images added
  38   if ImageMagick is used as image scaler ($wgUseImageMagick = true). Uploading
  39   of WebP images still disabled by default. Add $wgFileExtensions[] =
  40   'webp'; to LocalSettings.php to enable uploading of WebP images.
  41 * Added a new hook 'EnhancedChangesListModifyLineData', to
  42   modify the data used to build lines in enhanced recentchanges and watchlist.
  43
  44 ==== External libraries ====
  45 * Update es5-shim from v4.0.0 to v4.1.5.
  46 * Update json2 from revision 2014-02-04 to 2015-05-03.
  47 * Update Sinon.JS from 1.10.3 to 1.15.0.
  48 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  49 * Added mediawiki/at-ease 1.0.0
  50
  51 === Bug fixes in 1.26 ===
  52 * (T53283) load.php sometimes sends 304 response without full headers
  53 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  54
  55 === Action API changes in 1.26 ===
  56 * New-style continuation is now the default for action=continue. Clients may
  57   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  58   new style is encouraged as it's harder to implement incorrectly.
  59 * Deprecated API formats dump and wddx have been completely removed.
  60 * API action=query&list=tags: The displayname can now be boolean false if the
  61   tag is meant to be hidden from user interfaces.
  62 * action=import no longer allows both the namespace= and rootpage= parameters
  63   to be set. If they are both set, the value of rootpage= will be ignored.
  64 * prop=revision output in enum mode is now sorted by timestamp rather than
  65   revision ID. This usually won't make any difference.
  66 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  67   with formatversion=2.
  68 * Various other output from meta=siteinfo will now always be arrays instead of
  69   sometimes being numerically-indexed objects with formatversion=2.
  70 * When errors about users being blocked are returned, they now include
  71   information about the relevant block.
  72
  73 === Action API internal changes in 1.26 ===
  74
  75 === Languages updated in 1.26 ===
  76
  77 MediaWiki supports over 350 languages. Many localisations are updated
  78 regularly. Below only new and removed languages are listed, as well as
  79 changes to languages because of Phabricator reports.
  80
  81 * Languages added:
  82 ** dty (डोटेली/Doteli), thanks to translators जनक राज भट्ट, बिप्लब आनन्द,
  83    मेश सिंह बोहरा, and राम प्रसाद जोशी
  84
  85 === Other changes in 1.26 ===
  86 * ChangeTags::tagDescription() will return false if the interface message
  87   for the tag is disabled.
  88 * Added PageHistoryPager::doBatchLookups hook.
  89 * Added ParserCacheSaveComplete to ParserCache
  90 * supportsDirectEditing and supportsDirectApiEditing methods added to
  91   ContentHandler, to provide a way for ApiEditPage and EditPage to check
  92   if direct editing of content is allowed. These methods return false,
  93   by default for the ContentHandler base class and true for TextContentHandler
  94   and it's derivative classes (everything in core). For Content types that
  95   do not support direct editing, an alternative mechanism should be provided
  96   for editing, such as action overrides or specific api modules.
  97 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
  98   one function. The callback can't be called directly any more. The callback
  99   function is replaced with confirmCloseWindow.release().
 100 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
 101   ResourceLoaderModule::getDependencies(). Extension classes that override that
 102   method should be updated. If they aren't updated, PHP Strict standards
 103   warnings will appear when E_STRICT error reporting is enabled. Note: in the
 104   near future, this parameter will probably become non-optional.
 105 * Removed maintenance script deleteImageMemcached.php.
 106 * MWFunction::newObj() was removed (deprecated in 1.25).
 107   ObjectFactory::getObjectFromSpec() should be used instead.
 108 * The parser will no longer randomize the string it uses to mark the place of
 109   items that were stripped during parsing. It will use a fixed string instead.
 110   This causes the parser to re-use the regular expressions it uses to search
 111   and replace markers rather than generate novel expressions on each parse.
 112   Re-using regular expressions will improve performance on HHVM and the
 113   forthcoming PHP 7. The interfaces changes accompanying this change are:
 114   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
 115   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
 116     $prefix argument for StripState::_construct() are deprecated and their
 117     value is ignored.
 118 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
 119   mediawiki/at-ease, and are now deprecated. Callers should use
 120   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
 121 * The Block class constructor now takes an associative array of parameters
 122   instead of many optional positional arguments. Calling the constructor the old
 123   way will issue a deprecation warning.
 124 * The jquery.mwExtension module was deprecated.
 125 * $wgSpecialPageGroups was removed (deprecated in 1.21).
 126 * SpecialPageFactory::setGroup was removed (deprecated in 1.21).
 127 * SpecialPageFactory::getGroup was removed (deprecated in 1.21).
 128
 129 == Compatibility ==
 130
 131 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 132 HHVM 3.3.0.
 133
 134 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 135 support for them is somewhat less mature. There is experimental support for
 136 Oracle and Microsoft SQL Server.
 137
 138 The supported versions are:
 139
 140 * MySQL 5.0.3 or later
 141 * PostgreSQL 8.3 or later
 142 * SQLite 3.3.7 or later
 143 * Oracle 9.0.1 or later
 144 * Microsoft SQL Server 2005 (9.00.1399)
 145
 146 == Upgrading ==
 147
 148 1.26 has several database changes since 1.25, and will not work without schema
 149 updates. Note that due to changes to some very large tables like the revision
 150 table, the schema update may take quite long (minutes on a medium sized site,
 151 many hours on a large site).
 152
 153 If upgrading from before 1.11, and you are using a wiki as a commons
 154 repository, make sure that it is updated as well. Otherwise, errors may arise
 155 due to database schema changes.
 156
 157 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 158 new database fields are filled with data.
 159
 160 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 161 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 162 with MediaWiki 1.21.
 163
 164 Don't forget to always back up your database before upgrading!
 165
 166 See the file UPGRADE for more detailed upgrade instructions.
 167
 168 For notes on 1.25.x and older releases, see HISTORY.
 169
 170 == Online documentation ==
 171
 172 Documentation for both end-users and site administrators is available on
 173 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 174 for pages that explicitly state that their contents are in the public domain):
 175
 176         https://www.mediawiki.org/wiki/Documentation
 177
 178 == Mailing list ==
 179
 180 A mailing list is available for MediaWiki user support and discussion:
 181
 182         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 183
 184 A low-traffic announcements-only list is also available:
 185
 186         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 187
 188 It's highly recommended that you sign up for one of these lists if you're
 189 going to run a public MediaWiki, so you can be notified of security fixes.
 190
 191 == IRC help ==
 192
 193 There's usually someone online in #mediawiki on irc.freenode.net.