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