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 * $wgPasswordResetRoutes['email'] = true by default.
  13 * $wgEnableParserCache was deprecated, set $wgParserCacheType to CACHE_NONE
  14   instead if you want to disable the parser cache.
  15 * New-style continuation is now the default for API action=continue. Clients may
  16   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  17   new style is encouraged as it's harder to implement incorrectly.
  18 * Deprecated API formats dump and wddx have been completely removed.
  19
  20 === New features in 1.26 ===
  21 * (T51506) Now action=info gives estimates of actual watchers for a page.
  22   See $wgRCMaxAge, $wgWatchersMaxAge and $wgUnwatchedPageSecret
  23   to learn how to configure if needed.
  24 * Change tags can now be hidden in the interface by disabling the associated
  25   "tag-<id>" interface message.
  26 * ':' (colon) is now invalid in usernames for new accounts. Existing accounts
  27   are not affected.
  28 * Added a new hook, 'LogException', to log exceptions in nonstandard ways.
  29 * Revive the 'SpecialSearchResultsAppend' hook which occurs after the list of
  30   search results are rendered. The initial use case is to append a "give us
  31   feedback" link beneath the search results.
  32 * Added a new hook, 'RejectParserCacheValue', which allows extensions to
  33   reject an otherwise-successful parser cache lookup. The intent is to allow
  34   extensions to manage the eviction of archaic HTML output from the cache.
  35 * (T68699) The expiration of the UserID and Token login cookies
  36   ($wgExtendedLoginCookieExpiration) can be configured independently of the
  37   expiration of all other cookies ($wgCookieExpiration).
  38 * (T50519) Support for generating JPEG/PNG thumbnails from WebP images added
  39   if ImageMagick is used as image scaler ($wgUseImageMagick = true). Uploading
  40   of WebP images still disabled by default. Add $wgFileExtensions[] =
  41   'webp'; to LocalSettings.php to enable uploading of WebP images.
  42 * Added new hooks 'EnhancedChangesListModifyLineData' &
  43   'EnhancedChangesListModifyBlockLineData', to modify the data used to build
  44   lines in enhanced recentchanges and watchlist.
  45 * Caches that need purging ability now use the WANObjectCache interface.
  46   This corresponds to a new $wgMainWANCache setting, which defaults to using
  47   the $wgMainCacheType settings.
  48 * Callers needing fast light-weight data stores use $wgMainStash to select
  49   the store type from $wgObjectCaches. The default is the local database.
  50
  51 ==== External libraries ====
  52 * Update es5-shim from v4.0.0 to v4.1.5.
  53 * Update json2 from revision 2014-02-04 to 2015-05-03.
  54 * Update Sinon.JS from 1.10.3 to 1.15.4.
  55 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  56 * Added mediawiki/at-ease 1.0.0.
  57 * Update QUnit from v1.17.1 to v1.18.0.
  58
  59 === Bug fixes in 1.26 ===
  60 * (T53283) load.php sometimes sends 304 response without full headers
  61 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  62
  63 === Action API changes in 1.26 ===
  64 * New-style continuation is now the default for action=continue. Clients may
  65   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  66   new style is encouraged as it's harder to implement incorrectly.
  67 * Deprecated API formats dump and wddx have been completely removed.
  68 * API action=query&list=tags: The displayname can now be boolean false if the
  69   tag is meant to be hidden from user interfaces.
  70 * action=import no longer allows both the namespace= and rootpage= parameters
  71   to be set. If they are both set, the value of rootpage= will be ignored.
  72 * prop=revision output in enum mode is now sorted by timestamp rather than
  73   revision ID. This usually won't make any difference.
  74 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  75   with formatversion=2.
  76 * Various other output from meta=siteinfo will now always be arrays instead of
  77   sometimes being numerically-indexed objects with formatversion=2.
  78 * When errors about users being blocked are returned, they now include
  79   information about the relevant block.
  80
  81 === Action API internal changes in 1.26 ===
  82
  83 === Languages updated in 1.26 ===
  84
  85 MediaWiki supports over 350 languages. Many localisations are updated
  86 regularly. Below only new and removed languages are listed, as well as
  87 changes to languages because of Phabricator reports.
  88
  89 * Languages added:
  90 ** dty (डोटेली/Doteli), thanks to translators जनक राज भट्ट, बिप्लब आनन्द,
  91    मेश सिंह बोहरा, and राम प्रसाद जोशी
  92 ** luz (لئری دوٙمینی / Southern Luri)
  93
  94 === Other changes in 1.26 ===
  95 * ChangeTags::tagDescription() will return false if the interface message
  96   for the tag is disabled.
  97 * Added PageHistoryPager::doBatchLookups hook.
  98 * Added ParserCacheSaveComplete to ParserCache
  99 * supportsDirectEditing and supportsDirectApiEditing methods added to
 100   ContentHandler, to provide a way for ApiEditPage and EditPage to check
 101   if direct editing of content is allowed. These methods return false,
 102   by default for the ContentHandler base class and true for TextContentHandler
 103   and it's derivative classes (everything in core). For Content types that
 104   do not support direct editing, an alternative mechanism should be provided
 105   for editing, such as action overrides or specific api modules.
 106 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
 107   one function. The callback can't be called directly any more. The callback
 108   function is replaced with confirmCloseWindow.release().
 109 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
 110   ResourceLoaderModule::getDependencies(). Extension classes that override that
 111   method should be updated. If they aren't updated, PHP Strict standards
 112   warnings will appear when E_STRICT error reporting is enabled. Note: in the
 113   near future, this parameter will probably become non-optional.
 114 * Removed maintenance script deleteImageMemcached.php.
 115 * MWFunction::newObj() was removed (deprecated in 1.25).
 116   ObjectFactory::getObjectFromSpec() should be used instead.
 117 * The parser will no longer randomize the string it uses to mark the place of
 118   items that were stripped during parsing. It will use a fixed string instead.
 119   This causes the parser to re-use the regular expressions it uses to search
 120   and replace markers rather than generate novel expressions on each parse.
 121   Re-using regular expressions will improve performance on HHVM and the
 122   forthcoming PHP 7. The interfaces changes accompanying this change are:
 123   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
 124   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
 125     $prefix argument for StripState::_construct() are deprecated and their
 126     value is ignored.
 127 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
 128   mediawiki/at-ease, and are now deprecated. Callers should use
 129   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
 130 * The Block class constructor now takes an associative array of parameters
 131   instead of many optional positional arguments. Calling the constructor the old
 132   way will issue a deprecation warning.
 133 * The jquery.mwExtension module was deprecated.
 134 * $wgSpecialPageGroups was removed (deprecated in 1.21).
 135 * SpecialPageFactory::setGroup was removed (deprecated in 1.21).
 136 * SpecialPageFactory::getGroup was removed (deprecated in 1.21).
 137 * DatabaseBase::ignoreErrors() is now protected.
 138
 139 == Compatibility ==
 140
 141 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 142 HHVM 3.3.0.
 143
 144 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 145 support for them is somewhat less mature. There is experimental support for
 146 Oracle and Microsoft SQL Server.
 147
 148 The supported versions are:
 149
 150 * MySQL 5.0.3 or later
 151 * PostgreSQL 8.3 or later
 152 * SQLite 3.3.7 or later
 153 * Oracle 9.0.1 or later
 154 * Microsoft SQL Server 2005 (9.00.1399)
 155
 156 == Upgrading ==
 157
 158 1.26 has several database changes since 1.25, and will not work without schema
 159 updates. Note that due to changes to some very large tables like the revision
 160 table, the schema update may take quite long (minutes on a medium sized site,
 161 many hours on a large site).
 162
 163 If upgrading from before 1.11, and you are using a wiki as a commons
 164 repository, make sure that it is updated as well. Otherwise, errors may arise
 165 due to database schema changes.
 166
 167 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 168 new database fields are filled with data.
 169
 170 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 171 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 172 with MediaWiki 1.21.
 173
 174 Don't forget to always back up your database before upgrading!
 175
 176 See the file UPGRADE for more detailed upgrade instructions.
 177
 178 For notes on 1.25.x and older releases, see HISTORY.
 179
 180 == Online documentation ==
 181
 182 Documentation for both end-users and site administrators is available on
 183 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 184 for pages that explicitly state that their contents are in the public domain):
 185
 186         https://www.mediawiki.org/wiki/Documentation
 187
 188 == Mailing list ==
 189
 190 A mailing list is available for MediaWiki user support and discussion:
 191
 192         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 193
 194 A low-traffic announcements-only list is also available:
 195
 196         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 197
 198 It's highly recommended that you sign up for one of these lists if you're
 199 going to run a public MediaWiki, so you can be notified of security fixes.
 200
 201 == IRC help ==
 202
 203 There's usually someone online in #mediawiki on irc.freenode.net.