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
  31
  32 ==== External libraries ====
  33 * Update es5-shim from v4.0.0 to v4.1.5.
  34 * Update json2 from revision 2014-02-04 to 2015-05-03.
  35 * Update Sinon.JS from 1.10.3 to 1.15.0.
  36 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  37 * Added mediawiki/at-ease 1.0.0
  38
  39 === Bug fixes in 1.26 ===
  40 * (bug 51283) load.php sometimes sends 304 response without full headers
  41 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  42
  43 === Action API changes in 1.26 ===
  44 * New-style continuation is now the default for action=continue. Clients may
  45   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  46   new style is encouraged as it's harder to implement incorrectly.
  47 * API action=query&list=tags: The displayname can now be boolean false if the
  48   tag is meant to be hidden from user interfaces.
  49 * action=import no longer allows both the namespace= and rootpage= parameters
  50   to be set. If they are both set, the value of rootpage= will be ignored.
  51 * prop=revision output in enum mode is now sorted by timestamp rather than
  52   revision ID. This usually won't make any difference.
  53 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  54   with formatversion=2.
  55 * Various other output from meta=siteinfo will now always be arrays instead of
  56   sometimes being numerically-indexed objects with formatversion=2.
  57 * When errors about users being blocked are returned, they now include
  58   information about the relevant block.
  59
  60 === Action API internal changes in 1.26 ===
  61
  62 === Languages updated in 1.26 ===
  63
  64 MediaWiki supports over 350 languages. Many localisations are updated
  65 regularly. Below only new and removed languages are listed, as well as
  66 changes to languages because of Bugzilla reports.
  67
  68
  69 === Other changes in 1.26 ===
  70 * ChangeTags::tagDescription() will return false if the interface message
  71   for the tag is disabled.
  72 * Added PageHistoryPager::doBatchLookups hook.
  73 * Added ParserCacheSaveComplete to ParserCache
  74 * supportsDirectEditing and supportsDirectApiEditing methods added to
  75   ContentHandler, to provide a way for ApiEditPage and EditPage to check
  76   if direct editing of content is allowed. These methods return false,
  77   by default for the ContentHandler base class and true for TextContentHandler
  78   and it's derivative classes (everything in core). For Content types that
  79   do not support direct editing, an alternative mechanism should be provided
  80   for editing, such as action overrides or specific api modules.
  81 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
  82   one function. The callback can't be called directly any more. The callback
  83   function is replaced with confirmCloseWindow.release().
  84 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
  85   ResourceLoaderModule::getDependencies(). Extension classes that override that
  86   method should be updated. If they aren't updated, PHP Strict standards
  87   warnings will appear when E_STRICT error reporting is enabled. Note: in the
  88   near future, this parameter will probably become non-optional.
  89 * Removed maintenance script deleteImageMemcached.php.
  90 * MWFunction::newObj() was removed (deprecated in 1.25).
  91   ObjectFactory::getObjectFromSpec() should be used instead.
  92 * The parser will no longer randomize the string it uses to mark the place of
  93   items that were stripped during parsing. It will use a fixed string instead.
  94   This causes the parser to re-use the regular expressions it uses to search
  95   and replace markers rather than generate novel expressions on each parse.
  96   Re-using regular expressions will improve performance on HHVM and the
  97   forthcoming PHP 7. The interfaces changes accompanying this change are:
  98   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
  99   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
 100     $prefix argument for StripState::_construct() are deprecated and their
 101     value is ignored.
 102 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
 103   mediawiki/at-ease, and are now deprecated. Callers should use
 104   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
 105 * The Block class constructor now takes an associative array of parameters
 106   instead of many optional positional arguments. Calling the constructor the old
 107   way will issue a deprecation warning.
 108 * The jquery.mwExtension module was deprecated.
 109
 110
 111 == Compatibility ==
 112
 113 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 114 HHVM 3.3.0.
 115
 116 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 117 support for them is somewhat less mature. There is experimental support for
 118 Oracle and Microsoft SQL Server.
 119
 120 The supported versions are:
 121
 122 * MySQL 5.0.3 or later
 123 * PostgreSQL 8.3 or later
 124 * SQLite 3.3.7 or later
 125 * Oracle 9.0.1 or later
 126 * Microsoft SQL Server 2005 (9.00.1399)
 127
 128 == Upgrading ==
 129
 130 1.26 has several database changes since 1.25, and will not work without schema
 131 updates. Note that due to changes to some very large tables like the revision
 132 table, the schema update may take quite long (minutes on a medium sized site,
 133 many hours on a large site).
 134
 135 If upgrading from before 1.11, and you are using a wiki as a commons
 136 repository, make sure that it is updated as well. Otherwise, errors may arise
 137 due to database schema changes.
 138
 139 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 140 new database fields are filled with data.
 141
 142 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 143 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 144 with MediaWiki 1.21.
 145
 146 Don't forget to always back up your database before upgrading!
 147
 148 See the file UPGRADE for more detailed upgrade instructions.
 149
 150 For notes on 1.25.x and older releases, see HISTORY.
 151
 152 == Online documentation ==
 153
 154 Documentation for both end-users and site administrators is available on
 155 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 156 for pages that explicitly state that their contents are in the public domain):
 157
 158         https://www.mediawiki.org/wiki/Documentation
 159
 160 == Mailing list ==
 161
 162 A mailing list is available for MediaWiki user support and discussion:
 163
 164         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 165
 166 A low-traffic announcements-only list is also available:
 167
 168         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 169
 170 It's highly recommended that you sign up for one of these lists if you're
 171 going to run a public MediaWiki, so you can be notified of security fixes.
 172
 173 == IRC help ==
 174
 175 There's usually someone online in #mediawiki on irc.freenode.net.
 176