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