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
  26 === New features in 1.26 ===
  27 * (T9148) Changes to category membership are now shown in watchlists and recent
  28   changes. This can be configured in user preferences.
  29 * (T51506) Now action=info gives estimates of actual watchers for a page.
  30   See $wgRCMaxAge, $wgWatchersMaxAge and $wgUnwatchedPageSecret
  31   to learn how to configure if needed.
  32 * Change tags can now be hidden in the interface by disabling the associated
  33   "tag-<id>" interface message.
  34 * ':' (colon) is now invalid in usernames for new accounts. Existing accounts
  35   are not affected.
  36 * Added a new hook, 'LogException', to log exceptions in nonstandard ways.
  37 * Revive the 'SpecialSearchResultsAppend' hook which occurs after the list of
  38   search results are rendered. The initial use case is to append a "give us
  39   feedback" link beneath the search results.
  40 * Added a new hook, 'RejectParserCacheValue', which allows extensions to
  41   reject an otherwise-successful parser cache lookup. The intent is to allow
  42   extensions to manage the eviction of archaic HTML output from the cache.
  43 * (T68699) The expiration of the UserID and Token login cookies
  44   ($wgExtendedLoginCookieExpiration) can be configured independently of the
  45   expiration of all other cookies ($wgCookieExpiration).
  46 * (T50519) Support for generating JPEG/PNG thumbnails from WebP images added
  47   if ImageMagick is used as image scaler ($wgUseImageMagick = true). Uploading
  48   of WebP images still disabled by default. Add $wgFileExtensions[] =
  49   'webp'; to LocalSettings.php to enable uploading of WebP images.
  50 * Added new hooks 'EnhancedChangesListModifyLineData' &
  51   'EnhancedChangesListModifyBlockLineData', to modify the data used to build
  52   lines in enhanced recentchanges and watchlist.
  53 * Caches that need purging ability now use the WANObjectCache interface.
  54   This corresponds to a new $wgMainWANCache setting, which defaults to using
  55   the $wgMainCacheType settings.
  56 * Callers needing fast light-weight data stores use $wgMainStash to select
  57   the store type from $wgObjectCaches. The default is the local database.
  58 * Interface message overrides in the MediaWiki namespace will now be cached in
  59   memcached and APC (if available), rather than memcached and local files.
  60 * Added a new hook, 'RandomPageQuery', to allow modification of the query used
  61   by Special:Random to select random pages.
  62 * $wgTransactionalTimeLimit was added, which controls the request time limit
  63   for potentially slow POST requests that need to be as atomic as possible.
  64
  65 ==== External libraries ====
  66 * Update es5-shim from v4.0.0 to v4.1.5.
  67 * Update json2 from revision 2014-02-04 to 2015-05-03.
  68 * Update Sinon.JS from 1.10.3 to 1.15.4.
  69 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  70 * Added mediawiki/at-ease 1.0.0.
  71 * Update QUnit from v1.17.1 to v1.18.0.
  72
  73 === Bug fixes in 1.26 ===
  74 * (T53283) load.php sometimes sends 304 response without full headers
  75 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  76 * (T98841) {{msgnw:}} now preserves comments even when subst: is not used.
  77
  78 === Action API changes in 1.26 ===
  79 * New-style continuation is now the default for action=continue. Clients may
  80   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  81   new style is encouraged as it's harder to implement incorrectly.
  82 * Deprecated API formats dump and wddx have been completely removed.
  83 * API action=query&list=tags: The displayname can now be boolean false if the
  84   tag is meant to be hidden from user interfaces.
  85 * action=import no longer allows both the namespace= and rootpage= parameters
  86   to be set. If they are both set, the value of rootpage= will be ignored.
  87 * prop=revision output in enum mode is now sorted by timestamp rather than
  88   revision ID. This usually won't make any difference.
  89 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  90   with formatversion=2.
  91 * Various other output from meta=siteinfo will now always be arrays instead of
  92   sometimes being numerically-indexed objects with formatversion=2.
  93 * When errors about users being blocked are returned, they now include
  94   information about the relevant block.
  95
  96 === Action API internal changes in 1.26 ===
  97
  98 === Languages updated in 1.26 ===
  99
 100 MediaWiki supports over 350 languages. Many localisations are updated
 101 regularly. Below only new and removed languages are listed, as well as
 102 changes to languages because of Phabricator reports.
 103
 104 * Languages added:
 105 ** dty (डोटेली/Doteli), thanks to translators जनक राज भट्ट, बिप्लब आनन्द,
 106    मेश सिंह बोहरा, and राम प्रसाद जोशी
 107 ** luz (لئری دوٙمینی / Southern Luri)
 108
 109 === Other changes in 1.26 ===
 110 * ChangeTags::tagDescription() will return false if the interface message
 111   for the tag is disabled.
 112 * Added PageHistoryPager::doBatchLookups hook.
 113 * Added ParserCacheSaveComplete to ParserCache
 114 * supportsDirectEditing and supportsDirectApiEditing methods added to
 115   ContentHandler, to provide a way for ApiEditPage and EditPage to check
 116   if direct editing of content is allowed. These methods return false,
 117   by default for the ContentHandler base class and true for TextContentHandler
 118   and it's derivative classes (everything in core). For Content types that
 119   do not support direct editing, an alternative mechanism should be provided
 120   for editing, such as action overrides or specific api modules.
 121 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
 122   one function. The callback can't be called directly any more. The callback
 123   function is replaced with confirmCloseWindow.release().
 124 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
 125   ResourceLoaderModule::getDependencies(). Extension classes that override that
 126   method should be updated. If they aren't updated, PHP Strict standards
 127   warnings will appear when E_STRICT error reporting is enabled. Note: in the
 128   near future, this parameter will probably become non-optional.
 129 * Removed maintenance script deleteImageMemcached.php.
 130 * MWFunction::newObj() was removed (deprecated in 1.25).
 131   ObjectFactory::getObjectFromSpec() should be used instead.
 132 * The parser will no longer randomize the string it uses to mark the place of
 133   items that were stripped during parsing. It will use a fixed string instead.
 134   This causes the parser to re-use the regular expressions it uses to search
 135   and replace markers rather than generate novel expressions on each parse.
 136   Re-using regular expressions will improve performance on HHVM and the
 137   forthcoming PHP 7. The interfaces changes accompanying this change are:
 138   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
 139   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
 140     $prefix argument for StripState::_construct() are deprecated and their
 141     value is ignored.
 142 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
 143   mediawiki/at-ease, and are now deprecated. Callers should use
 144   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
 145 * The Block class constructor now takes an associative array of parameters
 146   instead of many optional positional arguments. Calling the constructor the old
 147   way will issue a deprecation warning.
 148 * The jquery.mwExtension module was deprecated.
 149 * $wgSpecialPageGroups was removed (deprecated in 1.21).
 150 * SpecialPageFactory::setGroup was removed (deprecated in 1.21).
 151 * SpecialPageFactory::getGroup was removed (deprecated in 1.21).
 152 * DatabaseBase::ignoreErrors() is now protected.
 153 * BREAKING CHANGE: mediawiki.legacy.ajax has been removed, following
 154   a lengthy deprecation period.
 155 * The ScopedPHPTimeout class was removed.
 156
 157 == Compatibility ==
 158
 159 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 160 HHVM 3.3.0.
 161
 162 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 163 support for them is somewhat less mature. There is experimental support for
 164 Oracle and Microsoft SQL Server.
 165
 166 The supported versions are:
 167
 168 * MySQL 5.0.3 or later
 169 * PostgreSQL 8.3 or later
 170 * SQLite 3.3.7 or later
 171 * Oracle 9.0.1 or later
 172 * Microsoft SQL Server 2005 (9.00.1399)
 173
 174 == Upgrading ==
 175
 176 1.26 has several database changes since 1.25, and will not work without schema
 177 updates. Note that due to changes to some very large tables like the revision
 178 table, the schema update may take quite long (minutes on a medium sized site,
 179 many hours on a large site).
 180
 181 If upgrading from before 1.11, and you are using a wiki as a commons
 182 repository, make sure that it is updated as well. Otherwise, errors may arise
 183 due to database schema changes.
 184
 185 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 186 new database fields are filled with data.
 187
 188 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 189 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 190 with MediaWiki 1.21.
 191
 192 Don't forget to always back up your database before upgrading!
 193
 194 See the file UPGRADE for more detailed upgrade instructions.
 195
 196 For notes on 1.25.x and older releases, see HISTORY.
 197
 198 == Online documentation ==
 199
 200 Documentation for both end-users and site administrators is available on
 201 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 202 for pages that explicitly state that their contents are in the public domain):
 203
 204         https://www.mediawiki.org/wiki/Documentation
 205
 206 == Mailing list ==
 207
 208 A mailing list is available for MediaWiki user support and discussion:
 209
 210         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 211
 212 A low-traffic announcements-only list is also available:
 213
 214         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 215
 216 It's highly recommended that you sign up for one of these lists if you're
 217 going to run a public MediaWiki, so you can be notified of security fixes.
 218
 219 == IRC help ==
 220
 221 There's usually someone online in #mediawiki on irc.freenode.net.