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
  15 === New features in 1.26 ===
  16 * Change tags can now be hidden in the interface by disabling the associated
  17   "tag-<id>" interface message.
  18 * ':' (colon) is now invalid in usernames for new accounts. Existing accounts
  19   are not affected.
  20 * Added a new hook, 'LogException', to log exceptions in nonstandard ways.
  21 * Revive the 'SpecialSearchResultsAppend' hook which occurs after the list of
  22   search results are rendered. The initial use case is to append a "give us
  23   feedback" link beneath the search results.
  24 * Added a new hook, 'RejectParserCacheValue', which allows extensions to
  25   reject an otherwise-successful parser cache lookup. The intent is to allow
  26   extensions to manage the eviction of archaic HTML output from the cache.
  27
  28
  29 ==== External libraries ====
  30 * Update es5-shim from v4.0.0 to v4.1.5.
  31 * Update json2 from revision 2014-02-04 to 2015-05-03.
  32 * Update Sinon.JS from 1.10.3 to 1.15.0.
  33 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  34 * Added mediawiki/at-ease 1.0.0
  35
  36 === Bug fixes in 1.26 ===
  37 * (bug 51283) load.php sometimes sends 304 response without full headers
  38 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  39
  40 === Action API changes in 1.26 ===
  41 * API action=query&list=tags: The displayname can now be boolean false if the
  42   tag is meant to be hidden from user interfaces.
  43 * action=import no longer allows both the namespace= and rootpage= parameters
  44   to be set. If they are both set, the value of rootpage= will be ignored.
  45 * prop=revision output in enum mode is now sorted by timestamp rather than
  46   revision ID. This usually won't make any difference.
  47 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  48   with formatversion=2.
  49 * Various other output from meta=siteinfo will now always be arrays instead of
  50   sometimes being numerically-indexed objects with formatversion=2.
  51 * When errors about users being blocked are returned, they now include
  52   information about the relevant block.
  53
  54 === Action API internal changes in 1.26 ===
  55
  56 === Languages updated in 1.26 ===
  57
  58 MediaWiki supports over 350 languages. Many localisations are updated
  59 regularly. Below only new and removed languages are listed, as well as
  60 changes to languages because of Bugzilla reports.
  61
  62
  63 === Other changes in 1.26 ===
  64 * ChangeTags::tagDescription() will return false if the interface message
  65   for the tag is disabled.
  66 * Added PageHistoryPager::doBatchLookups hook.
  67 * Added ParserCacheSaveComplete to ParserCache
  68 * supportsDirectEditing and supportsDirectApiEditing methods added to
  69   ContentHandler, to provide a way for ApiEditPage and EditPage to check
  70   if direct editing of content is allowed. These methods return false,
  71   by default for the ContentHandler base class and true for TextContentHandler
  72   and it's derivative classes (everything in core). For Content types that
  73   do not support direct editing, an alternative mechanism should be provided
  74   for editing, such as action overrides or specific api modules.
  75 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
  76   one function. The callback can't be called directly any more. The callback
  77   function is replaced with confirmCloseWindow.release().
  78 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
  79   ResourceLoaderModule::getDependencies(). Extension classes that override that
  80   method should be updated. If they aren't updated, PHP Strict standards
  81   warnings will appear when E_STRICT error reporting is enabled. Note: in the
  82   near future, this parameter will probably become non-optional.
  83 * Removed maintenance script deleteImageMemcached.php.
  84 * MWFunction::newObj() was removed (deprecated in 1.25).
  85   ObjectFactory::getObjectFromSpec() should be used instead.
  86 * The parser will no longer randomize the string it uses to mark the place of
  87   items that were stripped during parsing. It will use a fixed string instead.
  88   This causes the parser to re-use the regular expressions it uses to search
  89   and replace markers rather than generate novel expressions on each parse.
  90   Re-using regular expressions will improve performance on HHVM and the
  91   forthcoming PHP 7. The interfaces changes accompanying this change are:
  92   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
  93   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
  94     $prefix argument for StripState::_construct() are deprecated and their
  95     value is ignored.
  96 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
  97   mediawiki/at-ease, and are now deprecated. Callers should use
  98   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
  99 * The Block class constructor now takes an associative array of parameters
 100   instead of many optional positional arguments. Calling the constructor the old
 101   way will issue a deprecation warning.
 102 * The jquery.mwExtension module was deprecated.
 103
 104
 105 == Compatibility ==
 106
 107 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 108 HHVM 3.3.0.
 109
 110 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 111 support for them is somewhat less mature. There is experimental support for
 112 Oracle and Microsoft SQL Server.
 113
 114 The supported versions are:
 115
 116 * MySQL 5.0.3 or later
 117 * PostgreSQL 8.3 or later
 118 * SQLite 3.3.7 or later
 119 * Oracle 9.0.1 or later
 120 * Microsoft SQL Server 2005 (9.00.1399)
 121
 122 == Upgrading ==
 123
 124 1.26 has several database changes since 1.25, and will not work without schema
 125 updates. Note that due to changes to some very large tables like the revision
 126 table, the schema update may take quite long (minutes on a medium sized site,
 127 many hours on a large site).
 128
 129 If upgrading from before 1.11, and you are using a wiki as a commons
 130 repository, make sure that it is updated as well. Otherwise, errors may arise
 131 due to database schema changes.
 132
 133 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 134 new database fields are filled with data.
 135
 136 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 137 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 138 with MediaWiki 1.21.
 139
 140 Don't forget to always back up your database before upgrading!
 141
 142 See the file UPGRADE for more detailed upgrade instructions.
 143
 144 For notes on 1.25.x and older releases, see HISTORY.
 145
 146 == Online documentation ==
 147
 148 Documentation for both end-users and site administrators is available on
 149 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 150 for pages that explicitly state that their contents are in the public domain):
 151
 152         https://www.mediawiki.org/wiki/Documentation
 153
 154 == Mailing list ==
 155
 156 A mailing list is available for MediaWiki user support and discussion:
 157
 158         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 159
 160 A low-traffic announcements-only list is also available:
 161
 162         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 163
 164 It's highly recommended that you sign up for one of these lists if you're
 165 going to run a public MediaWiki, so you can be notified of security fixes.
 166
 167 == IRC help ==
 168
 169 There's usually someone online in #mediawiki on irc.freenode.net.
 170