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  26   This experimental feature was never enabled by default and is obsolete as of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 * Fields in ParserOptions are now private. Use the accessors instead.
  30
  31 === New features in 1.26 ===
  32 * (T51506) Now action=info gives estimates of actual watchers for a page.
  33   See $wgRCMaxAge, $wgWatchersMaxAge and $wgUnwatchedPageSecret
  34   to learn how to configure if needed.
  35 * Change tags can now be hidden in the interface by disabling the associated
  36   "tag-<id>" interface message.
  37 * ':' (colon) is now invalid in usernames for new accounts. Existing accounts
  38   are not affected.
  39 * Added a new hook, 'LogException', to log exceptions in nonstandard ways.
  40 * Revive the 'SpecialSearchResultsAppend' hook which occurs after the list of
  41   search results are rendered. The initial use case is to append a "give us
  42   feedback" link beneath the search results.
  43 * Added a new hook, 'RejectParserCacheValue', which allows extensions to
  44   reject an otherwise-successful parser cache lookup. The intent is to allow
  45   extensions to manage the eviction of archaic HTML output from the cache.
  46 * (T68699) The expiration of the UserID and Token login cookies
  47   ($wgExtendedLoginCookieExpiration) can be configured independently of the
  48   expiration of all other cookies ($wgCookieExpiration).
  49 * (T50519) Support for generating JPEG/PNG thumbnails from WebP images added
  50   if ImageMagick is used as image scaler ($wgUseImageMagick = true). Uploading
  51   of WebP images still disabled by default. Add $wgFileExtensions[] =
  52   'webp'; to LocalSettings.php to enable uploading of WebP images.
  53 * Added new hooks 'EnhancedChangesListModifyLineData' &
  54   'EnhancedChangesListModifyBlockLineData', to modify the data used to build
  55   lines in enhanced recentchanges and watchlist.
  56 * Caches that need purging ability now use the WANObjectCache interface.
  57   This corresponds to a new $wgMainWANCache setting, which defaults to using
  58   the $wgMainCacheType settings.
  59 * Callers needing fast light-weight data stores use $wgMainStash to select
  60   the store type from $wgObjectCaches. The default is the local database.
  61 * Interface message overrides in the MediaWiki namespace will now be cached in
  62   memcached and APC (if available), rather than memcached and local files.
  63 * Added a new hook, 'RandomPageQuery', to allow modification of the query used
  64   by Special:Random to select random pages.
  65 * $wgTransactionalTimeLimit was added, which controls the request time limit
  66   for potentially slow POST requests that need to be as atomic as possible.
  67 * ResourceLoader now loads all scripts asynchronously. The top-queue and
  68   startup modules are no longer synchronously loaded.
  69
  70 ==== External libraries ====
  71 * Update es5-shim from v4.0.0 to v4.1.5.
  72 * Update json2 from revision 2014-02-04 to 2015-05-03.
  73 * Update Sinon.JS from 1.10.3 to 1.15.4.
  74 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  75 * Added mediawiki/at-ease 1.0.0.
  76 * Update QUnit from v1.17.1 to v1.18.0.
  77
  78 === Bug fixes in 1.26 ===
  79 * (T53283) load.php sometimes sends 304 response without full headers
  80 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  81 * (T98841) {{msgnw:}} now preserves comments even when subst: is not used.
  82
  83 === Action API changes in 1.26 ===
  84 * New-style continuation is now the default for action=continue. Clients may
  85   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  86   new style is encouraged as it's harder to implement incorrectly.
  87 * Deprecated API formats dump and wddx have been completely removed.
  88 * API action=query&list=tags: The displayname can now be boolean false if the
  89   tag is meant to be hidden from user interfaces.
  90 * action=import no longer allows both the namespace= and rootpage= parameters
  91   to be set. If they are both set, the value of rootpage= will be ignored.
  92 * prop=revision output in enum mode is now sorted by timestamp rather than
  93   revision ID. This usually won't make any difference.
  94 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  95   with formatversion=2.
  96 * Various other output from meta=siteinfo will now always be arrays instead of
  97   sometimes being numerically-indexed objects with formatversion=2.
  98 * When errors about users being blocked are returned, they now include
  99   information about the relevant block.
 100
 101 === Action API internal changes in 1.26 ===
 102 * New metadata item ApiResult::META_KVP_MERGE to allow for merging the KVP key
 103   into the value when the value is an assoc.
 104
 105 === Languages updated in 1.26 ===
 106
 107 MediaWiki supports over 350 languages. Many localisations are updated
 108 regularly. Below only new and removed languages are listed, as well as
 109 changes to languages because of Phabricator reports.
 110
 111 * Languages added:
 112 ** ase (American sign language), thanks to translator Icemandeaf
 113 ** dty (डोटेली/Doteli), thanks to translators जनक राज भट्ट, बिप्लब आनन्द,
 114    मेश सिंह बोहरा, and राम प्रसाद जोशी
 115 ** luz (لئری دوٙمینی / Southern Luri)
 116
 117 === Other changes in 1.26 ===
 118 * ChangeTags::tagDescription() will return false if the interface message
 119   for the tag is disabled.
 120 * Added PageHistoryPager::doBatchLookups hook.
 121 * Added ParserCacheSaveComplete to ParserCache
 122 * supportsDirectEditing and supportsDirectApiEditing methods added to
 123   ContentHandler, to provide a way for ApiEditPage and EditPage to check
 124   if direct editing of content is allowed. These methods return false,
 125   by default for the ContentHandler base class and true for TextContentHandler
 126   and it's derivative classes (everything in core). For Content types that
 127   do not support direct editing, an alternative mechanism should be provided
 128   for editing, such as action overrides or specific api modules.
 129 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
 130   one function. The callback can't be called directly any more. The callback
 131   function is replaced with confirmCloseWindow.release().
 132 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
 133   ResourceLoaderModule::getDependencies(). Extension classes that override that
 134   method should be updated. If they aren't updated, PHP Strict standards
 135   warnings will appear when E_STRICT error reporting is enabled. Note: in the
 136   near future, this parameter will probably become non-optional.
 137 * Removed maintenance script deleteImageMemcached.php.
 138 * MWFunction::newObj() was removed (deprecated in 1.25).
 139   ObjectFactory::getObjectFromSpec() should be used instead.
 140 * The parser will no longer randomize the string it uses to mark the place of
 141   items that were stripped during parsing. It will use a fixed string instead.
 142   This causes the parser to re-use the regular expressions it uses to search
 143   and replace markers rather than generate novel expressions on each parse.
 144   Re-using regular expressions will improve performance on HHVM and the
 145   forthcoming PHP 7. The interfaces changes accompanying this change are:
 146   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
 147   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
 148     $prefix argument for StripState::_construct() are deprecated and their
 149     value is ignored.
 150 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
 151   mediawiki/at-ease, and are now deprecated. Callers should use
 152   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
 153 * The Block class constructor now takes an associative array of parameters
 154   instead of many optional positional arguments. Calling the constructor the old
 155   way will issue a deprecation warning.
 156 * The jquery.mwExtension module was deprecated.
 157 * $wgSpecialPageGroups was removed (deprecated in 1.21).
 158 * SpecialPageFactory::setGroup was removed (deprecated in 1.21).
 159 * SpecialPageFactory::getGroup was removed (deprecated in 1.21).
 160 * DatabaseBase::ignoreErrors() is now protected.
 161 * BREAKING CHANGE: mediawiki.legacy.ajax has been removed, following
 162   a lengthy deprecation period.
 163 * The ScopedPHPTimeout class was removed.
 164 * Removed maintenance script fixSlaveDesync.php.
 165
 166 == Compatibility ==
 167
 168 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 169 HHVM 3.3.0.
 170
 171 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 172 support for them is somewhat less mature. There is experimental support for
 173 Oracle and Microsoft SQL Server.
 174
 175 The supported versions are:
 176
 177 * MySQL 5.0.3 or later
 178 * PostgreSQL 8.3 or later
 179 * SQLite 3.3.7 or later
 180 * Oracle 9.0.1 or later
 181 * Microsoft SQL Server 2005 (9.00.1399)
 182
 183 == Upgrading ==
 184
 185 1.26 has several database changes since 1.25, and will not work without schema
 186 updates. Note that due to changes to some very large tables like the revision
 187 table, the schema update may take quite long (minutes on a medium sized site,
 188 many hours on a large site).
 189
 190 If upgrading from before 1.11, and you are using a wiki as a commons
 191 repository, make sure that it is updated as well. Otherwise, errors may arise
 192 due to database schema changes.
 193
 194 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 195 new database fields are filled with data.
 196
 197 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 198 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 199 with MediaWiki 1.21.
 200
 201 Don't forget to always back up your database before upgrading!
 202
 203 See the file UPGRADE for more detailed upgrade instructions.
 204
 205 For notes on 1.25.x and older releases, see HISTORY.
 206
 207 == Online documentation ==
 208
 209 Documentation for both end-users and site administrators is available on
 210 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 211 for pages that explicitly state that their contents are in the public domain):
 212
 213         https://www.mediawiki.org/wiki/Documentation
 214
 215 == Mailing list ==
 216
 217 A mailing list is available for MediaWiki user support and discussion:
 218
 219         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 220
 221 A low-traffic announcements-only list is also available:
 222
 223         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 224
 225 It's highly recommended that you sign up for one of these lists if you're
 226 going to run a public MediaWiki, so you can be notified of security fixes.
 227
 228 == IRC help ==
 229
 230 There's usually someone online in #mediawiki on irc.freenode.net.