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
  34 ==== External libraries ====
  35 * Update es5-shim from v4.0.0 to v4.1.5.
  36 * Update json2 from revision 2014-02-04 to 2015-05-03.
  37 * Update Sinon.JS from 1.10.3 to 1.15.0.
  38 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  39 * Added mediawiki/at-ease 1.0.0
  40
  41 === Bug fixes in 1.26 ===
  42 * (bug 51283) load.php sometimes sends 304 response without full headers
  43 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  44
  45 === Action API changes in 1.26 ===
  46 * New-style continuation is now the default for action=continue. Clients may
  47   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  48   new style is encouraged as it's harder to implement incorrectly.
  49 * API action=query&list=tags: The displayname can now be boolean false if the
  50   tag is meant to be hidden from user interfaces.
  51 * action=import no longer allows both the namespace= and rootpage= parameters
  52   to be set. If they are both set, the value of rootpage= will be ignored.
  53 * prop=revision output in enum mode is now sorted by timestamp rather than
  54   revision ID. This usually won't make any difference.
  55 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  56   with formatversion=2.
  57 * Various other output from meta=siteinfo will now always be arrays instead of
  58   sometimes being numerically-indexed objects with formatversion=2.
  59 * When errors about users being blocked are returned, they now include
  60   information about the relevant block.
  61
  62 === Action API internal changes in 1.26 ===
  63
  64 === Languages updated in 1.26 ===
  65
  66 MediaWiki supports over 350 languages. Many localisations are updated
  67 regularly. Below only new and removed languages are listed, as well as
  68 changes to languages because of Bugzilla reports.
  69
  70
  71 === Other changes in 1.26 ===
  72 * ChangeTags::tagDescription() will return false if the interface message
  73   for the tag is disabled.
  74 * Added PageHistoryPager::doBatchLookups hook.
  75 * Added ParserCacheSaveComplete to ParserCache
  76 * supportsDirectEditing and supportsDirectApiEditing methods added to
  77   ContentHandler, to provide a way for ApiEditPage and EditPage to check
  78   if direct editing of content is allowed. These methods return false,
  79   by default for the ContentHandler base class and true for TextContentHandler
  80   and it's derivative classes (everything in core). For Content types that
  81   do not support direct editing, an alternative mechanism should be provided
  82   for editing, such as action overrides or specific api modules.
  83 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
  84   one function. The callback can't be called directly any more. The callback
  85   function is replaced with confirmCloseWindow.release().
  86 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
  87   ResourceLoaderModule::getDependencies(). Extension classes that override that
  88   method should be updated. If they aren't updated, PHP Strict standards
  89   warnings will appear when E_STRICT error reporting is enabled. Note: in the
  90   near future, this parameter will probably become non-optional.
  91 * Removed maintenance script deleteImageMemcached.php.
  92 * MWFunction::newObj() was removed (deprecated in 1.25).
  93   ObjectFactory::getObjectFromSpec() should be used instead.
  94 * The parser will no longer randomize the string it uses to mark the place of
  95   items that were stripped during parsing. It will use a fixed string instead.
  96   This causes the parser to re-use the regular expressions it uses to search
  97   and replace markers rather than generate novel expressions on each parse.
  98   Re-using regular expressions will improve performance on HHVM and the
  99   forthcoming PHP 7. The interfaces changes accompanying this change are:
 100   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
 101   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
 102     $prefix argument for StripState::_construct() are deprecated and their
 103     value is ignored.
 104 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
 105   mediawiki/at-ease, and are now deprecated. Callers should use
 106   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
 107 * The Block class constructor now takes an associative array of parameters
 108   instead of many optional positional arguments. Calling the constructor the old
 109   way will issue a deprecation warning.
 110 * The jquery.mwExtension module was deprecated.
 111
 112
 113 == Compatibility ==
 114
 115 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 116 HHVM 3.3.0.
 117
 118 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 119 support for them is somewhat less mature. There is experimental support for
 120 Oracle and Microsoft SQL Server.
 121
 122 The supported versions are:
 123
 124 * MySQL 5.0.3 or later
 125 * PostgreSQL 8.3 or later
 126 * SQLite 3.3.7 or later
 127 * Oracle 9.0.1 or later
 128 * Microsoft SQL Server 2005 (9.00.1399)
 129
 130 == Upgrading ==
 131
 132 1.26 has several database changes since 1.25, and will not work without schema
 133 updates. Note that due to changes to some very large tables like the revision
 134 table, the schema update may take quite long (minutes on a medium sized site,
 135 many hours on a large site).
 136
 137 If upgrading from before 1.11, and you are using a wiki as a commons
 138 repository, make sure that it is updated as well. Otherwise, errors may arise
 139 due to database schema changes.
 140
 141 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 142 new database fields are filled with data.
 143
 144 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 145 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 146 with MediaWiki 1.21.
 147
 148 Don't forget to always back up your database before upgrading!
 149
 150 See the file UPGRADE for more detailed upgrade instructions.
 151
 152 For notes on 1.25.x and older releases, see HISTORY.
 153
 154 == Online documentation ==
 155
 156 Documentation for both end-users and site administrators is available on
 157 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 158 for pages that explicitly state that their contents are in the public domain):
 159
 160         https://www.mediawiki.org/wiki/Documentation
 161
 162 == Mailing list ==
 163
 164 A mailing list is available for MediaWiki user support and discussion:
 165
 166         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 167
 168 A low-traffic announcements-only list is also available:
 169
 170         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 171
 172 It's highly recommended that you sign up for one of these lists if you're
 173 going to run a public MediaWiki, so you can be notified of security fixes.
 174
 175 == IRC help ==
 176
 177 There's usually someone online in #mediawiki on irc.freenode.net.
 178