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 * (T7645) The "Signature" button on the edit toolbar is now hidden by default
  20   in non-talk namespaces. A new configuration variable,
  21   $wgExtraSignatureNamespaces, controls in which subject (non-talk) namespaces
  22   the "Signature" button on the edit toolbar will be displayed.
  23 * $wgResourceLoaderUseESI was deprecated and removed. This was an experimental
  24   feature that was never enabled by default.
  25 * $wgResourceLoaderExperimentalAsyncLoading was deprecated and removed.
  26   This experimental feature was never enabled by default and is obsolete as of
  27   MediaWiki 1.26, in where ResourceLoader became fully asynchronous.
  28 * $wgMasterWaitTimeout was removed (deprecated in 1.24).
  29
  30 === New features in 1.26 ===
  31 * (T51506) Now action=info gives estimates of actual watchers for a page.
  32   See $wgRCMaxAge, $wgWatchersMaxAge and $wgUnwatchedPageSecret
  33   to learn how to configure if needed.
  34 * Change tags can now be hidden in the interface by disabling the associated
  35   "tag-<id>" interface message.
  36 * ':' (colon) is now invalid in usernames for new accounts. Existing accounts
  37   are not affected.
  38 * Added a new hook, 'LogException', to log exceptions in nonstandard ways.
  39 * Revive the 'SpecialSearchResultsAppend' hook which occurs after the list of
  40   search results are rendered. The initial use case is to append a "give us
  41   feedback" link beneath the search results.
  42 * Added a new hook, 'RejectParserCacheValue', which allows extensions to
  43   reject an otherwise-successful parser cache lookup. The intent is to allow
  44   extensions to manage the eviction of archaic HTML output from the cache.
  45 * (T68699) The expiration of the UserID and Token login cookies
  46   ($wgExtendedLoginCookieExpiration) can be configured independently of the
  47   expiration of all other cookies ($wgCookieExpiration).
  48 * (T50519) Support for generating JPEG/PNG thumbnails from WebP images added
  49   if ImageMagick is used as image scaler ($wgUseImageMagick = true). Uploading
  50   of WebP images still disabled by default. Add $wgFileExtensions[] =
  51   'webp'; to LocalSettings.php to enable uploading of WebP images.
  52 * Added new hooks 'EnhancedChangesListModifyLineData' &
  53   'EnhancedChangesListModifyBlockLineData', to modify the data used to build
  54   lines in enhanced recentchanges and watchlist.
  55 * Caches that need purging ability now use the WANObjectCache interface.
  56   This corresponds to a new $wgMainWANCache setting, which defaults to using
  57   the $wgMainCacheType settings.
  58 * Callers needing fast light-weight data stores use $wgMainStash to select
  59   the store type from $wgObjectCaches. The default is the local database.
  60 * Interface message overrides in the MediaWiki namespace will now be cached in
  61   memcached and APC (if available), rather than memcached and local files.
  62 * Added a new hook, 'RandomPageQuery', to allow modification of the query used
  63   by Special:Random to select random pages.
  64 * $wgTransactionalTimeLimit was added, which controls the request time limit
  65   for potentially slow POST requests that need to be as atomic as possible.
  66 * ResourceLoader now loads all scripts asynchronously. The top-queue and
  67   startup modules are no longer synchronously loaded.
  68
  69 ==== External libraries ====
  70 * Update es5-shim from v4.0.0 to v4.1.5.
  71 * Update json2 from revision 2014-02-04 to 2015-05-03.
  72 * Update Sinon.JS from 1.10.3 to 1.15.4.
  73 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  74 * Added mediawiki/at-ease 1.0.0.
  75 * Update QUnit from v1.17.1 to v1.18.0.
  76
  77 === Bug fixes in 1.26 ===
  78 * (T53283) load.php sometimes sends 304 response without full headers
  79 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  80 * (T98841) {{msgnw:}} now preserves comments even when subst: is not used.
  81
  82 === Action API changes in 1.26 ===
  83 * New-style continuation is now the default for action=continue. Clients may
  84   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  85   new style is encouraged as it's harder to implement incorrectly.
  86 * Deprecated API formats dump and wddx have been completely removed.
  87 * API action=query&list=tags: The displayname can now be boolean false if the
  88   tag is meant to be hidden from user interfaces.
  89 * action=import no longer allows both the namespace= and rootpage= parameters
  90   to be set. If they are both set, the value of rootpage= will be ignored.
  91 * prop=revision output in enum mode is now sorted by timestamp rather than
  92   revision ID. This usually won't make any difference.
  93 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  94   with formatversion=2.
  95 * Various other output from meta=siteinfo will now always be arrays instead of
  96   sometimes being numerically-indexed objects with formatversion=2.
  97 * When errors about users being blocked are returned, they now include
  98   information about the relevant block.
  99
 100 === Action API internal changes in 1.26 ===
 101
 102 === Languages updated in 1.26 ===
 103
 104 MediaWiki supports over 350 languages. Many localisations are updated
 105 regularly. Below only new and removed languages are listed, as well as
 106 changes to languages because of Phabricator reports.
 107
 108 * Languages added:
 109 ** ase (American sign language), thanks to translator Icemandeaf
 110 ** dty (डोटेली/Doteli), thanks to translators जनक राज भट्ट, बिप्लब आनन्द,
 111    मेश सिंह बोहरा, and राम प्रसाद जोशी
 112 ** luz (لئری دوٙمینی / Southern Luri)
 113
 114 === Other changes in 1.26 ===
 115 * ChangeTags::tagDescription() will return false if the interface message
 116   for the tag is disabled.
 117 * Added PageHistoryPager::doBatchLookups hook.
 118 * Added ParserCacheSaveComplete to ParserCache
 119 * supportsDirectEditing and supportsDirectApiEditing methods added to
 120   ContentHandler, to provide a way for ApiEditPage and EditPage to check
 121   if direct editing of content is allowed. These methods return false,
 122   by default for the ContentHandler base class and true for TextContentHandler
 123   and it's derivative classes (everything in core). For Content types that
 124   do not support direct editing, an alternative mechanism should be provided
 125   for editing, such as action overrides or specific api modules.
 126 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
 127   one function. The callback can't be called directly any more. The callback
 128   function is replaced with confirmCloseWindow.release().
 129 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
 130   ResourceLoaderModule::getDependencies(). Extension classes that override that
 131   method should be updated. If they aren't updated, PHP Strict standards
 132   warnings will appear when E_STRICT error reporting is enabled. Note: in the
 133   near future, this parameter will probably become non-optional.
 134 * Removed maintenance script deleteImageMemcached.php.
 135 * MWFunction::newObj() was removed (deprecated in 1.25).
 136   ObjectFactory::getObjectFromSpec() should be used instead.
 137 * The parser will no longer randomize the string it uses to mark the place of
 138   items that were stripped during parsing. It will use a fixed string instead.
 139   This causes the parser to re-use the regular expressions it uses to search
 140   and replace markers rather than generate novel expressions on each parse.
 141   Re-using regular expressions will improve performance on HHVM and the
 142   forthcoming PHP 7. The interfaces changes accompanying this change are:
 143   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
 144   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
 145     $prefix argument for StripState::_construct() are deprecated and their
 146     value is ignored.
 147 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
 148   mediawiki/at-ease, and are now deprecated. Callers should use
 149   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
 150 * The Block class constructor now takes an associative array of parameters
 151   instead of many optional positional arguments. Calling the constructor the old
 152   way will issue a deprecation warning.
 153 * The jquery.mwExtension module was deprecated.
 154 * $wgSpecialPageGroups was removed (deprecated in 1.21).
 155 * SpecialPageFactory::setGroup was removed (deprecated in 1.21).
 156 * SpecialPageFactory::getGroup was removed (deprecated in 1.21).
 157 * DatabaseBase::ignoreErrors() is now protected.
 158 * BREAKING CHANGE: mediawiki.legacy.ajax has been removed, following
 159   a lengthy deprecation period.
 160 * The ScopedPHPTimeout class was removed.
 161 * Removed maintenance script fixSlaveDesync.php.
 162
 163 == Compatibility ==
 164
 165 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 166 HHVM 3.3.0.
 167
 168 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 169 support for them is somewhat less mature. There is experimental support for
 170 Oracle and Microsoft SQL Server.
 171
 172 The supported versions are:
 173
 174 * MySQL 5.0.3 or later
 175 * PostgreSQL 8.3 or later
 176 * SQLite 3.3.7 or later
 177 * Oracle 9.0.1 or later
 178 * Microsoft SQL Server 2005 (9.00.1399)
 179
 180 == Upgrading ==
 181
 182 1.26 has several database changes since 1.25, and will not work without schema
 183 updates. Note that due to changes to some very large tables like the revision
 184 table, the schema update may take quite long (minutes on a medium sized site,
 185 many hours on a large site).
 186
 187 If upgrading from before 1.11, and you are using a wiki as a commons
 188 repository, make sure that it is updated as well. Otherwise, errors may arise
 189 due to database schema changes.
 190
 191 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 192 new database fields are filled with data.
 193
 194 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 195 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 196 with MediaWiki 1.21.
 197
 198 Don't forget to always back up your database before upgrading!
 199
 200 See the file UPGRADE for more detailed upgrade instructions.
 201
 202 For notes on 1.25.x and older releases, see HISTORY.
 203
 204 == Online documentation ==
 205
 206 Documentation for both end-users and site administrators is available on
 207 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 208 for pages that explicitly state that their contents are in the public domain):
 209
 210         https://www.mediawiki.org/wiki/Documentation
 211
 212 == Mailing list ==
 213
 214 A mailing list is available for MediaWiki user support and discussion:
 215
 216         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 217
 218 A low-traffic announcements-only list is also available:
 219
 220         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 221
 222 It's highly recommended that you sign up for one of these lists if you're
 223 going to run a public MediaWiki, so you can be notified of security fixes.
 224
 225 == IRC help ==
 226
 227 There's usually someone online in #mediawiki on irc.freenode.net.