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   1  Security reminder: If you have PHP's register_globals option set, you must
   2  turn it off. MediaWiki will no longer work with it enabled.
   3  
   4  == MediaWiki 1.24 ==
   5  
   6  MediaWiki 1.24.0 is the stable branch and is recommended for use in production.
   7  
   8  MediaWiki 1.24 is a large release that contains many new features and bug
   9  fixes. This is the full list of changes in this version.
  10  
  11  Our thanks go to everyone who helped to improve MediaWiki by testing the beta
  12  release and submitting bug reports.
  13  
  14  === Configuration changes in 1.24 ===
  15  * Setting $wgAllowSiteCSSOnRestrictedPages to true is necessary if you want to
  16    use on-wiki CSS modifications (e.g MediaWiki:Common.css) on
  17    Special:UserLogin or Special:Preferences.
  18  * MediaWiki will no longer run if register_globals is enabled. It has been
  19    deprecated for 5 years now, and was removed in PHP 5.4. For more information
  20    about why, see <https://www.mediawiki.org/wiki/register_globals>.
  21  * MediaWiki now requires PHP's iconv extension. openSUSE users may need to
  22    install the php5-iconv package. Users of other systems may need to add
  23    extension=iconv.so to php.ini or recompile PHP without --without-iconv.
  24  * MediaWiki will no longer function if magic quotes are enabled. It has
  25    been deprecated for 5 years now, and was removed in PHP 5.4.
  26  * The server's canonical hostname is available as $wgServerName, which is
  27    exposed in both mw.config and ApiQuerySiteInfo.
  28  * Introduced $wgPagePropsHaveSortkey as a backwards-compatibility switch,
  29    for using the old schema of the page_props table, in case the respective
  30    schema update was not applied.
  31  * $wgSearchEverythingOnlyLoggedIn was removed as the 'searcheverything'
  32    user option was removed. Use $wgNamespacesToBeSearchedDefault instead or
  33    if you used to have $wgDefaultUserOptions['searcheverything'] = 1.
  34  * $wgMasterWaitTimeout has been deprecated.
  35  * $wgDBClusterTimeout has been removed.
  36  * $wgProxyKey has been removed. It is no longer used by MediaWiki core.
  37    Ensure $wgSecretKey is set in LocalSettings.php.
  38  * $wgExtraInterlanguageLinkPrefixes is a new configuration variable that
  39    contains an array of interwiki prefixes that should be treated as language
  40    prefixes (i.e. turned into interlanguage links when $wgInterwikiMagic is set
  41    to true).
  42  * $wgParserTestRemote has been removed.
  43  * $wgCountTotalSearchHits has been removed. If you're concerned about efficiency
  44    of search, you should use something like CirrusSearch instead of built in
  45    search.
  46  * Users in the 'sysop' group have access to Special:MergeHistory by default.
  47  * $wgFileStore was removed after having been deprecated in 1.17. Alternative
  48    configurations are $wgDeletedDirectory and $wgHashedUploadDirectory.
  49  * The deprecated $wgUseCommaCount variable has been removed.
  50  * $wgEnableSorbs and $wgSorbsUrl have been removed.
  51  * The UserCryptPassword and UserComparePassword hooks are no longer called.
  52    Any extensions using them must be updated to use the Password Hashing API.
  53  * $wgCompiledFiles has been removed.
  54  * $wgSortSpecialPages was removed, the listing on Special:SpecialPages is
  55    now always sorted.
  56  * $wgSpecialPages may now use callback functions as an alternative to plain class names.
  57    This allows more control over constructor parameters.
  58  * $wgHTCPMulticastAddress, $wgHTCPMulticastRouting and $wgHTCPPort were removed.
  59  * $wgRC2UDPAddress, $wgRC2UDPInterwikiPrefix, $wgRC2UDPOmitBots, $wgRC2UDPPort
  60    and $wgRC2UDPPrefix have been removed.
  61  * The default password type for MediaWiki has been changed from MD5 to PBKDF2.
  62    Password hashes will automatically be updated as users log in. If necessary, the
  63    old MD5 hashing can be restored by changing $wgPasswordDefault to 'B'. In addition,
  64    there is a maintenance script wrapOldPassword.php that can wrap all passwords in
  65    PBKDF2 (or the hashing algorithm of your choice) if you don't want to wait for your
  66    users to log in.
  67  * $wgImportSources can now either be a regular array, or an associative map
  68    specifying subprojects on the interwiki map of the target wiki, or a mix of
  69    the two. Existing configurations will still work.
  70  * Users must be able to edit through a page's protection to be able to delete it.
  71  * The default thumb size ($wgDefaultUserOptions['thumbsize']) is now 300px, up from
  72    180px. If you have altered the number of entries in $wgThumbLimits for your wiki, you
  73    may need to adjust your default user settings to compensate for the index change.
  74  * $wgDeferredUpdateList is now deprecated, you should use DeferredUpdates::addUpdate()
  75    instead.
  76  * $wgCanonicalLanguageLinks has been removed. Per Google recommendations, we
  77    will not send a rel=canonical pointing to a variant-neutral page, however
  78    we will send rel=alternate.
  79  * $wgResourceLoaderLESSFunctions has been deprecated and will be removed in the future.
  80  * $wgGoToEdit has been removed. Use the SpecialSearchNogomatch hook for similar
  81    functionality.
  82  * $wgMangleFlashPolicy was added to make MediaWiki's mangling of anything that
  83    might be a flash policy directive configurable.
  84  
  85  === New features in 1.24 ===
  86  * Added new hook WatchlistEditorBeforeFormRender, allowing subscribers to
  87    manipulate the list of pages and/or preload lots of data at once.
  88  * Added new argument &$link in hook WatchlistEditorBuildRemoveLine, allowing the
  89    link to the title to be changed.
  90  * Added a new hook, "WhatLinksHereProps", to allow extensions to annotate
  91    WhatLinksHere entries.
  92  * Added a new hook, "ContentGetParserOutput", to customize parser output for
  93    a given content object.
  94  * Deprecated the hook "ShowRawCssJs", use "ContentGetParserOutput" instead.
  95  * HTMLForm's HTMLTextField now supports the 'url' type.
  96  * HTMLForm fields may now be dynamically hidden based on the values of other
  97    fields in the form.
  98  * HTMLForm now supports multiple copies of an input field or set of input
  99    fields, e.g. the form may request "one or more usernames" without having to
 100    have the user enter delimited list of names into a text field.
 101  * Added a new hook, "SidebarBeforeOutput", to allow to edit the structure of
 102    the sidebar just before its display.
 103  * (bug 49156) Added the mediawiki.cookie ResourceLoader module, which wraps
 104    jquery.cookie so that getting/setting a cookie is syntactically and
 105    functionally similar to using the WebRequest::getCookie() and
 106    WebResponse::setcookie() methods.
 107  * (bug 44740) jQuery upgraded from 1.8.3 to 1.11.1. A new configuration option,
 108    $wgIncludejQueryMigrate, also loads the jQuery Migrate hack to let extensions
 109    and gadgets use the long-deprecated functions that were removed in jQuery 1.9.
 110    This option is turned off by default, and will be removed in MediaWiki 1.25.
 111  * (bug 47076) jQuery UI upgraded from 1.8.24 to 1.9.2.
 112  * Changes to content typography (fonts, etc.). See
 113    https://www.mediawiki.org/wiki/Typography_refresh for further information.
 114  * WikitextContent will now render redirects with the expected "redirect"
 115    header, rather than as an ordered list. Code calling Article::viewRedirect
 116    can probably be changed to no longer special-case redirects.
 117  * Header font set to a serif font stack. See
 118    https://www.mediawiki.org/wiki/Typography_refresh for further information.
 119  * (bug 65567) Added a new hook, "BeforeHttpsRedirect", to allow cancellation of
 120    the HTTP to HTTPS redirect due to forceHTTPS cookie, userRequires, etc. This
 121    is only for page views, since this hook doesn't affect UserLogin, OAuth,
 122    CentralAuth, etc. ATTENTION: This hook is likely to be removed soon due to
 123    overall design of the system.
 124  * (bug 17367) It is now possible to add pages to your watchlist from
 125    Special:UnwatchedPages without reloading the special page.
 126  * New methods setVolatile and isVolatile are added to PPFrame, so that
 127    extensions such as Cite.php can mark that their output is volatile and
 128    shouldn't be cached.
 129  * (bug 52817) Advanced search options are now saved on the search page itself,
 130    rather than in a dedicated pane in the preferences panel.
 131  * (bug 44591) The dropdown actions menu (little triangle next to page tabs) in
 132    the Vector skin has gained a label that should make it more discoverable.
 133  * MWCryptHKDF added for fast, cryptographically secure random number generation
 134    that won't deplete openssl's entropy pool.
 135  * ResourceLoader: File modules can now provide a skip function that uses an
 136    inline feature test to bypass loading of the module.
 137  * (bug 20210) Special pages may now provide autocompletion of their subpage
 138    names in search suggestions. Right now the only useful implementation is in
 139    Special:Log, but more are to come.
 140  * Special:MostLinkedTemplates is no longer limited to transclusions from the
 141    Template namespace.
 142  * Skins can now use 'remoteSkinPath' when defining ResourceLoader modules.
 143    This works the same as 'remoteExtPath' but is relative to the skins/ folder
 144    instead of the extensions/ folder.
 145  * Added the json2.js polyfill for the ES5 JSON.stringify and JSON.parse methods.
 146    Exposed as module "json" with a skip function to optimise loading.
 147  * Extensions and skins may now use 'namemsg' in $wgExtensionCredits in addition
 148    to 'name', to allow for the name to be localizable. 'name' should still be
 149    specified for backwards-compatibility and to define the path Special:Version
 150    uses to find extension license information.
 151  * Browser tests are now included to verify basic wiki functionality in developer
 152    environments. For details on running tests, see tests/browser/README.mediawiki.
 153  * Upgrade jStorage to v0.4.10.
 154  * {{!}} is now a magic word that produces the | character. This removes the need
 155    for Template:! for purposes such as passing pipes inside of parameters.
 156  * (bug 20790) The block log snippet on Special:Contributions and while
 157    editing user and user talk pages now works for IP range blocks.
 158  * (bug 9360) Added ability to change the page language for MediaWiki pages using
 159    Special:PageLanguage. All pages are set to wiki language by default.
 160    The feature needs to be enabled with $wgPageLanguageUseDB=true and
 161    permission needs to be set for 'pagelang'.
 162  * Upgrade Moment.js to v2.8.3.
 163  * (bug 67042) Added support for the HTML5 <rtc> tag for East Asian typography.
 164  * Upgrade Sinon.JS to 1.10.3.
 165  * Added the es5-shim polyfill for older or non-compliant javascript engines.
 166  * Upgrade jQuery Cookie to v1.3.1.
 167  * (bug 20476) Add a "viewsuppressed" user right to be able to view
 168    suppressed content but not suppress it ("suppressrevision" right).
 169  * (bug 66440) The MediaWiki web installer will now allow you to choose the skins
 170    to enable (from the ones included in download tarball) and decide which one
 171    should be the default.
 172  * (bug 68085, 68802) Links like [[localInterwikiPrefix:languageCode:pageTitle]],
 173    where localInterwikiPrefix is a member of the $wgLocalInterwikis array, will
 174    no longer be displayed in the sidebar when $wgInterwikiMagic is true. In a
 175    similar way, links like [[localInterwikiPrefix:File:Image.png]] and
 176    [[localInterwikiPrefix:Category:Hello]] will now render as regular links, and
 177    will not include the file or add the page to the category.
 178  * New special page, MyLanguage, to redirect users to subpages with localised
 179    versions of a page. (Integrated from Extension:Translate)
 180  * MediaWiki now supports multiple password types, including bcrypt and PBKDF2.
 181    The default type can be changed with $wgPasswordDefault and the type
 182    configurations can be changed with $wgPasswordConfig.
 183  * Skins can now define custom styles for default ResourceLoader modules using
 184    the $wgResourceModuleSkinStyles global. See the Vector skin for examples.
 185  * (bug 4488) There is now a preference to watch pages where the user has
 186    rollbacked an edit by default.
 187  * (bug 15484) Users will now be redirected to the login page when they need to
 188    log in, rather than being shown a page asking them to log in and having to click
 189    another link to actually get to the login page.
 190  * A JsonContent and JsonContentHandler were added for extensions to extend.
 191  * (bug 35045) Redirects to sections will now update the URL in browser's address
 192    bar using the HTML5 History API. When [[Dog]] redirects to [[Animals#Dog]],
 193    the user will now see "Animals#Dog" in their browser instead of "Dog#Dog".
 194  * API token handling has been rewritten. Any API module using tokens will need
 195    to be updated. See the entry below under "Action API internal changes".
 196  * Added HTMLAutoCompleteSelectField.
 197  * Added a new hook, "SkinPreloadExistence", to allow extensions to add titles to
 198    link existence cache before the page is rendered.
 199  * Config::set() was moved to its own interface, MutableConfig. GlobalVarConfig::set()
 200    is now deprecated, does not implement MutableConfig.
 201  * A MutableConfig named HashConfig was added, that stores an array of configuration
 202    settings.
 203  * (bug 69418) A MultiConfig implementation was added that supports fallback
 204    to multiple Config instances.
 205  * Update CSSJanus to v1.1.0.
 206  * Added FormatJson::parse() returning status with result or localized error message
 207  
 208  === Bug fixes in 1.24 ===
 209  * (bug 70686) More sensible behavior when special page aliases conflict
 210  * (bug 71040) Add Oracle version of update-keys.sql
 211  * (bug 64912, 64922) mw.Title: Add new static methods `newFromFileName`,
 212    `newFromUserInput`
 213  * MediaWikiVersionFetcher::fetchVersion() now supports semantic versions.
 214  * (bug 50572) MediaWiki:Blockip should support gender
 215  * (bug 49116) Footer copyright notice is now always displayed in user language
 216    rather than content language (same as copyright notice for editing interface).
 217  * (bug 62258) A bug was fixed in File::getUnscaledThumb when a height
 218    restriction was present in the parameters. Images with both the "frame"
 219    option and a size specification set will now always ignore the provided
 220    size and display an unscaled image, as the documentation has always
 221    claimed it would.
 222  * (bug 39035) Improved Vector skin performance by removing collapsibleNav,
 223    which used to collapse some sidebar elements by default.
 224    This removes -list id suffixes like p-lang-list: instead of using things like
 225    #p-lang-list, you can do #p-lang .body ul.
 226  * (bug 890) Links in Special:RecentChanges and Special:Watchlist no longer
 227    follow redirects to their target pages.
 228  * Parser now dies early if called recursively, instead of producing subtle bugs.
 229  * (bug 14323) Redirect pages, when viewed with redirect=no, no longer hide the
 230    remaining page content.
 231  * (bug 52587) Maintenance script deleteBatch.php no longer follows redirects
 232    in the file namespace and delete the file on the target page. It will still
 233    however delete the redirect page.
 234  * (bug 22683) {{msgnw:}} and other uses of PPFrame::RECOVER_ORIG will correctly
 235    recover the original code of extension tags.
 236  * (bug 65757) MSSQL: Update script drops unnamed constraints to be prepared
 237    for future updates. Because it's doing so heuristically, it may fail or drop
 238    wrong constraints.
 239  * (bug 67870) wfShellExec() cuts off stdout at multiples of 8192 bytes.
 240  * $wgRunJobsAsync now works with private wikis (e.g. read requires login).
 241  * (bugs 57238, 65206) Blank pages can now be directly created.
 242  * (bug 69789) Title::getContentModel() now loads from the database when
 243    necessary instead of incorrectly returning the default content model.
 244  * (bug 69249) wfBaseConvert() now works around PHP Bug #50175 when using GMP.
 245  * (bug 57909) URLs in the externallinks table will no longer have certain
 246    characters decoded in the query string.
 247  * (bug 67368) LESS mixins like .background-image() correctly flip image
 248    references for RTL stylesheets now.
 249  * (bugs 66776, 71478) SECURITY:  User PleaseStand reported a way to inject code
 250    into API clients that used format=php to process pages that underwent flash
 251    policy mangling. This was fixed along with improving how the mangling was done
 252    for format=json, and allowing sites to disable the mangling using
 253    $wgMangleFlashPolicy.
 254  * (bug 70901) SECURITY: User Jackmcbarn reported that the ability to update
 255    the content model for a page could allow an unprivileged attacker to edit
 256    another user's common.js under certain circumstances. The user right
 257    "editcontentmodel" was added, and is needed to change a revision's content
 258    model.
 259  * (bug 71111) SECURITY: User PleaseStand reported that on wikis that allow raw
 260    HTML, it is not safe to preview wikitext coming from an untrusted source such
 261    as a cross-site request. Thus add an edit token to the form, and when raw HTML
 262    is allowed, ensure the token is provided before showing the preview. This
 263    check is not performed on wikis that both allow raw HTML and anonymous
 264    editing, since there are easier ways to exploit that scenario.
 265  * (bug 72222) SECURITY: Do not show log action when the entry is revdeleted with
 266    DELETED_ACTION. NOTICE: this may be reverted in a future release pending a
 267    public RFC about the desired functionality. This issue was reported by user
 268    Bawolff.
 269  * (bug 71621) Make allowing site-wide styles on restricted special pages a
 270    config option.
 271  * (bug 42723) Added updated version history from 1.19.2 to 1.22.13
 272  
 273  === Action API changes in 1.24 ===
 274  * action=parse API now supports prop=modules, which provides the list of
 275    ResourceLoader modules that should be used to enhance the parsed content.
 276  * action=query&meta=siteinfo&siprop=interwikimap returns a new "protorel"
 277    field which is true if protocol-relative urls can be used to access
 278    a particular interwiki map entry.
 279  * list=logevents now provides logpage, which is the page ID from the
 280    logging table, if ids are requested and the user has the permissions.
 281  * action=edit now requires that appendtext, prependtext, or section=new be used
 282    when using the 'redirect' parameter, to prevent clients accidentally
 283    overwriting the target page with the content of the redirect.
 284  * list=logevents will now return an error if both letitle and leprefix are
 285    specified.
 286  * list=logevents has a new parameter, lenamespace, to allow filtering by
 287    namespace.
 288  * action=expandtemplates has a new parameter, prop, and a new output format.
 289    The old format is still used if prop isn't provided, but this is deprecated.
 290  * meta=userinfo can now return the count of unread pages on the watchlist.
 291  * list=watchlist can now filter by unread status.
 292  * The deprecated action=parse&prop=languageshtml has been removed.
 293  * (bug 48071) action=setnotificationtimestamp no longer throws PHP or database
 294    errors when no pages are given.
 295  * (bug 60734) Actions that use ApiPageSet (e.g. purge, watch,
 296    setnotificationtimestamp) will now include continuation information when
 297    using a generator.
 298  * Removed 'props' and 'errors' from action=paraminfo, as they have extremely
 299    limited use and are generally inaccurate, unmaintained, and impossible to
 300    properly maintain.
 301  * Formats dbg, dump, txt, wddx, and yaml are now deprecated.
 302  * action=paraminfo now indicates when a parameter is specifying a submodule.
 303  * The iwurl parameter to prop=iwlinks is deprecated in favor of iwprop=url, for
 304    parallelism with prop=langlinks.
 305  * All tokens should be fetched from action=query&meta=tokens; all other methods
 306    of fetching tokens are deprecated. The value needed for meta=tokens's 'type'
 307    parameter for each module is documented in the action=help output and is
 308    returned from action=paraminfo.
 309  * New action ClearHasMsg that can be used to clear HasMsg flag.
 310  * The cmstartsortkey and cmendsortkey parameters to list=categorymembers are
 311    deprecated in favor of cmstarthexsortkey and cmendhexsortkey.
 312  * (bug 63326) Add blockedtimestamp field to output of blockinfo property for
 313    the list=allusers and list=users modules.
 314  * prop=imageinfo no longer requires iiurlwidth to be set when using iiurlparam.
 315  * Added prop=linkshere, prop=fileusage, and prop=transcludedin, which are
 316    roughly equivalent to list=backlinks, list=imageusage, and list=embeddedin
 317    but can work on a list of titles (including titles from a generator).
 318  * prop=redirects can now filter returned redirects by namespace.
 319  
 320  === Action API internal changes in 1.24 ===
 321  * Methods for handling continuation are added to ApiResult, so actions other
 322    than query that use generators can easily support continuation.
 323  * $wgAPIModules (and the related $wgAPIFormatModules, $wgAPIMetaModules,
 324    $wgAPIPropModules, and $wgAPIListModules settings) now allow API modules
 325    to be specified using a "module spec" array instead of a plain class name.
 326    A "module spec" is an associative array containing at least the 'class' key
 327    for the module's class, and optionally a 'factory' key for the factory function
 328    to use for the module. This is intended for extensions that want control over
 329    the instantiation of their API modules, to allow for proper dependency
 330    injection.
 331  * A new param type 'submodule' is available. Parameters of this type will take
 332    the list of valid values from the module's ApiModuleManager for the group
 333    corresponding to the parameter name.
 334  * The 'APIGetPossibleErrors' and 'APIGetResultProperties' hooks are no longer used.
 335  * API token handling has been rewritten. Any API module using tokens will need
 336    to be updated:
 337    * ApiBase::needsToken now returns a token type instead of boolean true when a
 338      token is needed. Returning true will throw an exception. See documentation
 339      of that method for details.
 340    * Information for the 'token' parameter is automatically set by ApiBase
 341      getFinalParams and getFinalParamDescription.
 342    * ApiBase::getTokenSalt has been removed.
 343    * The hooks APIQueryInfoTokens, APIQueryRevisionsTokens,
 344      APIQueryRecentChangesTokens, APIQueryUsersTokens, and
 345      ApiTokensGetTokenTypes are deprecated, but are still called to support
 346      backwards-compatible token access.
 347  * ApiBase::validateLimit and ApiBase::validateTimestamp are now protected.
 348  * ApiQueryRedirects was removed; prop=redirects is now implemented by
 349    ApiQueryBacklinksProp along with the newly-added prop modules.
 350  * The following methods have been deprecated and may be removed in a future
 351    release:
 352    * ApiBase::getResultProperties
 353    * ApiBase::getFinalResultProperties
 354    * ApiBase::addTokenProperties
 355    * ApiBase::getRequireOnlyOneParameterErrorMessages
 356    * ApiBase::getRequireMaxOneParameterErrorMessages
 357    * ApiBase::getRequireAtLeastOneParameterErrorMessages
 358    * ApiBase::getTitleOrPageIdErrorMessage
 359    * ApiBase::getPossibleErrors
 360    * ApiBase::getFinalPossibleErrors
 361    * ApiBase::parseErrors
 362    * ApiQuery::setGeneratorContinue
 363    * ApiQueryBase::checkRowCount
 364    * ApiQueryBase::titleToKey
 365    * ApiQueryBase::keyToTitle
 366    * ApiQueryBase::keyPartToTitle
 367    * ApiQueryInfo::getTokenFunctions
 368    * ApiQueryInfo::resetTokenCache
 369    * ApiQueryInfo::getEditToken
 370    * ApiQueryInfo::getDeleteToken
 371    * ApiQueryInfo::getProtectToken
 372    * ApiQueryInfo::getMoveToken
 373    * ApiQueryInfo::getBlockToken
 374    * ApiQueryInfo::getUnblockToken
 375    * ApiQueryInfo::getEmailToken
 376    * ApiQueryInfo::getImportToken
 377    * ApiQueryInfo::getWatchToken
 378    * ApiQueryInfo::getOptionsToken
 379    * ApiQueryRecentChanges::getTokenFunctions
 380    * ApiQueryRecentChanges::getPatrolToken
 381    * ApiQueryRevisions::getTokenFunctions
 382    * ApiQueryRevisions::getRollbackToken
 383    * ApiQueryUsers::getTokenFunctions
 384    * ApiQueryUsers::getUserrightsToken
 385  * The following classes have been deprecated and may be removed in a future
 386    release:
 387    * ApiFormatDbg
 388    * ApiFormatDump
 389    * ApiFormatTxt
 390    * ApiFormatWddx
 391    * ApiFormatYaml
 392    * ApiTokens
 393  * The following class constants have been deprecated and may be removed in a
 394    future release:
 395    * ApiBase::PROP_ROOT
 396    * ApiBase::PROP_LIST
 397    * ApiBase::PROP_TYPE
 398    * ApiBase::PROP_NULLABLE
 399  
 400  === Languages updated in 1.24 ===
 401  
 402  MediaWiki supports over 350 languages. Many localisations are updated
 403  regularly. Below only new and removed languages are listed, as well as
 404  changes to languages because of Bugzilla reports.
 405  
 406  === Other changes in 1.24 ===
 407  * The deprecated jquery.delayedBind ResourceLoader module was removed.
 408  * The deprecated function mw.util.toggleToc was removed.
 409  * The Special:Search hooks SpecialSearchGo and SpecialSearchResultsAppend
 410    were removed as they were unused.
 411  * (bug 65477) User::pingLimiter() now has an additional profile point varying
 412    by action being used.
 413  * mediawiki.util.$content no longer supports old versions of the Vector,
 414    Monobook, Modern and CologneBlue skins that don't yet implement the "mw-body"
 415    and/or "mw-body-primary" class name in their html.
 416  * Added pp_sortkey column to page_props table, so pages can be efficiently
 417    queried and sorted by property value (bug 58032).
 418    See $wgPagePropsHaveSortkey if you want to postpone the schema change.
 419  * BREAKING CHANGE: All four built-in MediaWiki skins (Vector, MonoBook, Modern
 420    and Cologne Blue) were moved out of MediaWiki core to their own respective
 421    repositories. They will be installed with the release tarball, but you must
 422    install them separately if installing MediaWiki from source code. A warning
 423    message displayed until you do it should guide you through the process. See
 424    also <https://www.mediawiki.org/wiki/Manual:Skin_configuration>.
 425  * BREAKING CHANGE: Skins built for MediaWiki 1.15 and earlier that do not use
 426    the "headelement" template key are no longer supported. Setting
 427    $useHeadElement = false; is no longer supported and will not cause old keys
 428    like "headlinks", "skinnameclass", etc. to be defined.
 429  * BREAKING CHANGE: The files commonElements.css, commonContent.css and
 430    commonInterface.css (in skins/common/) have been removed. Skins may no longer
 431    rely on their presence and include them in their style modules. ResourceLoader
 432    modules introduced in MediaWiki 1.23 should be loaded instead:
 433    - skins/common/commonElements.css  → 'mediawiki.skinning.elements' module
 434    - skins/common/commonContent.css   → 'mediawiki.skinning.content' module
 435    - skins/common/commonInterface.css → 'mediawiki.skinning.interface' module
 436  * The deprecated 'SpecialVersionExtensionTypes' hook was removed.
 437  * (bug 63891) Add 'X-Robots-Tag: noindex' header in action=render pages.
 438  * SpecialPage no longer supports the syntax for invoking wfSpecial*() functions.
 439    Special pages should subclass SpecialPage and implement the execute() method.
 440  * (bug 63755) The deprecated constants RC_MOVE and RC_MOVE_OVER_REDIRECT were
 441    removed.
 442  * Special:MostLinkedTemplates has been renamed to Special:MostTranscludedPages.
 443  * The skin autodiscovery mechanism has been deprecated and will be removed in
 444    MediaWiki 1.25. See https://www.mediawiki.org/wiki/Manual:Skin_autodiscovery
 445    for migration guide for creators and users of custom skins that relied on it.
 446  * ResourceLoaderFileModule#getAllStyleFiles now returns all style files and all
 447    skin style files used by the module.
 448  * Removed getLang() from IContextSource and subclasses. (deprecated since 1.19)
 449  * Removed setLang() from subclasses of IContextSource. (deprecated since 1.19)
 450  * Removed WebRequest::escapeAppendQuery(). (deprecated since 1.20)
 451  * Removed info(), purge(), revert() and rollback() from the Article class; they
 452    have since become subclasses of the Action class. (deprecated since 1.19)
 453  * SearchEngineReplacePrefixesComplete hook was removed.
 454  * The "jquery.json" module has been deprecated. Use the "json" module instead.
 455  * Removed HTMLForm::addJS(). (deprecated since 1.18)
 456  * Removed LogEventsList::showHeader(). (deprecated since 1.19)
 457  * Removed ImageGalleryBase::useSkin(). (deprecated since 1.18)
 458  * Removed DatabaseMysqlBase::getLagFromProcesslist(). (deprecated since 1.19)
 459  * Removed LoadBalancer::closeConnecton(). (deprecated since 1.18)
 460  * Removed ApiBase::createContext(). (deprecated since 1.19)
 461  * BREAKING CHANGE: The undocumented Special{$this->getName()}BeforeFormDisplay
 462    set of hooks has been removed and replaced by a single new hook
 463    SpecialPageBeforeFormDisplay.
 464  * (bug 65781) Removed block warning on included {{Special:Contributions}}
 465  * Removed Skin::makeGlobalVariablesScript(). (deprecated since 1.19)
 466  * Removed MWNamespace::isMain(). (deprecated since 1.19)
 467  * Removed Preferences::loadOldSearchNs(). (deprecated since 1.19)
 468  * Removed OutputPage::getStatusMessage(). (deprecated since 1.18)
 469  * Removed OutputPage::isUserJsAllowed(). (deprecated since 1.18)
 470  * Removed Title::updateTitleProtection(). (deprecated since 1.19)
 471  * Removed ParserOptions::setSkin(). (deprecated since 1.19)
 472  * Removed Title::escapeCanonicalURL(). (deprecated since 1.19)
 473  * Removed Title::escapeLocalURL(). (deprecated since 1.19)
 474  * Removed Title::escapeFullURL(). (deprecated since 1.19)
 475  * Removed User::isValidEmailAddr(). (deprecated since 1.18)
 476  * Removed Title::getEscapedText(). (deprecated since 1.19)
 477  * Removed Language::getFallbackLanguageCode(). (deprecated since 1.19)
 478  * Removed WikiPage::isBigDeletion(). (deprecated since 1.19)
 479  * Removed MWInit class which contained functions related to a now discontinued
 480    PHP compiler called hphpc. (deprecated since 1.22)
 481  * ApiResult::enableSizeCheck() and disableSizeCheck() are now obsolete.
 482  * Removed ResourceLoaderGetStartupModules hook. (deprecated since 1.23)
 483  * Removed getFormFields(), onSubmit() and onSuccess() from FormlessAction, as
 484    these were meant specifically for FormAction instead.
 485  * Removed Action::execute().
 486  * Removed AjaxAddScript which has been obsolete since ResourceLoader and
 487    is unused by any modern extension.
 488  * Removed maintenance/nextJobDB.php; no longer in use.
 489  * Removed global function wfViewPrevNext(). (deprecated since 1.19)
 490  * Removed global function xmlsafe() from Export.php. (moved to OAIRepo extension)
 491  * Removed Title::userCanRead(). (deprecated since 1.19)
 492  * Removed maintenance script importTextFile.php. Use edit.php script instead.
 493  * A _from_namespace field has been added to the templatelinks, pagelinks,
 494    and filelinks tables. Run update.php to apply this change to the schema.
 495  * Removed File::sha1Base36(). (deprecated since 1.19)
 496  * Removed File::getPropsFromPath(). (deprecated since 1.19)
 497  * Removed functions blockedPage(), noCreatePermission(), readOnlyPage() and
 498    userNotLoggedInPage() from EditPage.php. (deprecated since 1.19)
 499  * Removed functions getContent(), getPreloadedText(), mergeChangesInto() and
 500    setPreloadedText() from EditPage.php. (deprecated since 1.21)
 501  * Removed global functions wfArrayLookup(), wfArrayMerge(), wfDebugDieBacktrace()
 502    and wfTime(). (deprecated since 1.22)
 503  * Browser support for Internet Explorer 6 and 7 lowered from Grade A to Grade C,
 504    meaning that JavaScript is no longer executed in these browser versions.
 505  * Browser support for Opera 11 lowered from Grade A to Grade C.
 506  * Removed IEFixes module which existed purely to provide support for MSIE versions
 507  * Deprecated SpecialPageFactory::getList() in favor of
 508    SpecialPageFactory::getNames()
 509    below 7 (conditionally loaded only for those browsers).
 510  * Action::checkCanExecute() no longer has a return value.
 511  * Removed cleanupForIRC(), loadFromCurRow(), newFromCurRow(), notifyRC2UDP()
 512    and sendToUDP() from RecentChange.php. (deprecated since 1.22)
 513  * Removed EnhancedChangesList::arrow(), sideArrow(), downArrow(), spacerArrow().
 514  * Removed Xml::namespaceSelector(). (deprecated since 1.19)
 515  * Removed WikiPage::estimateRevisionCount(). (deprecated since 1.19)
 516  * MYSQL: Enum item added to "major MIME type" columns.
 517    Running update.php on MySQL < v5.1 may result in heavy processing.
 518  * RSS and Atom feeds generated by MediaWiki no longer include a fallback
 519    stylesheet. It was ignored by most browsers these days anyway.
 520  * SpecialSearchNoResults hook has been removed. SpecialSearchResults is now
 521    called unconditionally.
 522  * TablePager::getBody() is now 'final' and can't be overridden in subclasses.
 523  * TablePager::getBody() is deprecated, use getBodyOutput() or getFullOutput().
 524  * Added $outputPage parameter to the SkinTemplateGetLanguageLink hook.
 525  * log_page for move log entries store the original page ID, rather than that
 526    of the new redirect page. This is not retroactive.
 527  * LCStoreAccel was removed. $wgLocalisationCacheConf can no longer be set to
 528    use this store class.
 529  * Html::infoBox() no longer accepts paths relative to skins/common/images/.
 530  * Deprecated defunct Skin::getCommonStylePath().
 531  * Some extensions had their ResourceLoader modules depend on the "mediawiki"
 532    and "jquery" modules. In the past, this behavior was undefined, now it will
 533    throw an error.
 534  * Removed BagOStuff::replace(). (deprecated since 1.23)
 535  * In Linker.php, link(), linkText() and makeBrokenImageLinkObj() now display
 536    warnings if their first parameter is not a Title object. Also makeImageLink()
 537    now requires a Parser as its first parameter.
 538  * (bug 67368) LESS functions embed() and embeddable(), added in MediaWiki 1.23
 539    and broken by design, have been removed. Use appropriate LESS mixins instead.
 540  * Removed cssjanus.py from maintenance directory as it was unused.
 541  * Removed maintenance/purgeOldText.inc and the PurgeRedundantText() function
 542    it contained (superseded by Maintenance::purgeRedundantText() in 1.16).
 543    The purgeOldText.php maintenance script has been retained.
 544  * (Bug 70630) PHPUnit tests can be found by directory discovery, by adding the
 545    directory path from your UnitTestsList callback. Older versions of
 546    MediaWiki core will barf at this usage.
 547  
 548  ==== Renamed classes ====
 549  * CLDRPluralRuleConverter_Expression to CLDRPluralRuleConverterExpression
 550  * CLDRPluralRuleConverter_Fragment to CLDRPluralRuleConverterFragment
 551  * CLDRPluralRuleConverter_Operator to CLDRPluralRuleConverterOperator
 552  * CLDRPluralRuleEvaluator_Range to CLDRPluralRuleEvaluatorRange
 553  * CSSJanus_Tokenizer to CSSJanusTokenizer
 554  * MediaWiki_I18N to MediaWikiI18N
 555  * Parser_DiffTest to ParserDiffTest
 556  * RevDel_ArchiveItem to RevDelArchiveItem
 557  * RevDel_ArchiveList to RevDelArchiveList
 558  * RevDel_ArchivedFileItem to RevDelArchivedFileItem
 559  * RevDel_ArchivedFileList to RevDelArchivedFileList
 560  * RevDel_ArchivedRevisionItem to RevDelArchivedRevisionItem
 561  * RevDel_FileItem to RevDelFileItem
 562  * RevDel_FileList to RevDelFileList
 563  * RevDel_Item to RevDelItem
 564  * RevDel_List to RevDelList
 565  * RevDel_LogItem to RevDelLogItem
 566  * RevDel_LogList to RevDelLogList
 567  * RevDel_RevisionItem to RevDelRevisionItem
 568  * RevDel_RevisionList to RevDelRevisionList
 569  * WebInstaller_Complete to WebInstallerComplete
 570  * WebInstaller_Copying to WebInstallerCopying
 571  * WebInstaller_DBConnect to WebInstallerDBConnect
 572  * WebInstaller_DBSettings to WebInstallerDBSettings
 573  * WebInstaller_Document to WebInstallerDocument
 574  * WebInstaller_ExistingWiki to WebInstallerExistingWiki
 575  * WebInstaller_Install to WebInstallerInstall
 576  * WebInstaller_Language to WebInstallerLanguage
 577  * WebInstaller_Name to WebInstallerName
 578  * WebInstaller_Options to WebInstallerOptions
 579  * WebInstaller_Readme to WebInstallerReadme
 580  * WebInstaller_ReleaseNotes to WebInstallerReleaseNotes
 581  * WebInstaller_Restart to WebInstallerRestart
 582  * WebInstaller_Upgrade to WebInstallerUpgrade
 583  * WebInstaller_UpgradeDoc to WebInstallerUpgradeDoc
 584  * WebInstaller_Welcome to WebInstallerWelcome
 585  
 586  ==== Removed classes ====
 587  * IPBlockForm - Use SpecialBlock directly
 588  * WatchlistEditor - Use SpecialEditWatchlist directly
 589  * FormatExif - Use FormatMetadata directly
 590  * RevertFileAction - Use RevertAction directly
 591  * HistoryPage - Use HistoryAction directly
 592  * RawPage - Use RawAction directly
 593  * StubContLang - Use Language::factory() instead
 594  * XMLReader2 - Use XMLReader directly
 595  * ResourceLoaderLESSFunctions - No longer in use, not intended for public usage
 596  
 597  ==== Removed files ====
 598  The skins/common/ directory, previously containing some assets intended to be
 599  used by skins and a number of legacy styles and scripts, has been removed. Its
 600  contents have been deleted or relocated into the resources/ directory. Full list
 601  of files that are no longer available follows.
 602  
 603  * skins/common/ajax.js
 604  * skins/common/commonContent.css
 605  * skins/common/commonElements.css
 606  * skins/common/commonInterface.css
 607  * skins/common/commonPrint.css
 608  * skins/common/config-cc.css
 609  * skins/common/config.css
 610  * skins/common/config.js
 611  * skins/common/feed.css
 612  * skins/common/IEFixes.js
 613  * skins/common/oldshared.css
 614  * skins/common/protect.js
 615  * skins/common/shared.css
 616  * skins/common/upload.js
 617  * skins/common/wikibits.js
 618  * skins/common/images/add.png
 619  * skins/common/images/ajax-loader.gif
 620  * skins/common/images/arrow_disabled_first_25.png
 621  * skins/common/images/arrow_disabled_last_25.png
 622  * skins/common/images/arrow_disabled_left_25.png
 623  * skins/common/images/arrow_disabled_right_25.png
 624  * skins/common/images/arrow_first_25.png
 625  * skins/common/images/arrow_last_25.png
 626  * skins/common/images/arrow_left_25.png
 627  * skins/common/images/arrow_right_25.png
 628  * skins/common/images/Arr_.png
 629  * skins/common/images/Arr_d.png
 630  * skins/common/images/Arr_l.png
 631  * skins/common/images/Arr_r.png
 632  * skins/common/images/Arr_u.png
 633  * skins/common/images/bullet.gif
 634  * skins/common/images/button_bold.png
 635  * skins/common/images/button_extlink.png
 636  * skins/common/images/button_headline.png
 637  * skins/common/images/button_hr.png
 638  * skins/common/images/button_image.png
 639  * skins/common/images/button_italic.png
 640  * skins/common/images/button_link.png
 641  * skins/common/images/button_media.png
 642  * skins/common/images/button_nowiki.png
 643  * skins/common/images/button_sig.png
 644  * skins/common/images/button_template.png
 645  * skins/common/images/cc-0.png
 646  * skins/common/images/cc-by-nc-sa.png
 647  * skins/common/images/cc-by-sa.png
 648  * skins/common/images/cc-by.png
 649  * skins/common/images/Checker-16x16.png
 650  * skins/common/images/closewindow.png
 651  * skins/common/images/closewindow19x19.png
 652  * skins/common/images/critical-32.png
 653  * skins/common/images/diffunderline.gif
 654  * skins/common/images/download-32.png
 655  * skins/common/images/feed-icon.png
 656  * skins/common/images/feed-icon.svg
 657  * skins/common/images/gnu-fdl.png
 658  * skins/common/images/help-question-hover.gif
 659  * skins/common/images/help-question.gif
 660  * skins/common/images/info-32.png
 661  * skins/common/images/link_icon.gif
 662  * skins/common/images/magnify-clip-rtl.png
 663  * skins/common/images/magnify-clip.png
 664  * skins/common/images/mediawiki.png
 665  * skins/common/images/nextredirectltr.png
 666  * skins/common/images/nextredirectrtl.png
 667  * skins/common/images/poweredby_mediawiki_88x31.png
 668  * skins/common/images/public-domain.png
 669  * skins/common/images/question-small.png
 670  * skins/common/images/question.svg
 671  * skins/common/images/redirectltr.png
 672  * skins/common/images/redirectrtl.png
 673  * skins/common/images/remove.png
 674  * skins/common/images/spinner.gif
 675  * skins/common/images/tick-32.png
 676  * skins/common/images/tipsy-arrow.gif
 677  * skins/common/images/tooltip_icon.png
 678  * skins/common/images/warning-32.png
 679  * skins/common/images/wiki.png
 680  * skins/common/images/Zoom_sans.gif
 681  * skins/common/images/ar/button_bold.png
 682  * skins/common/images/ar/button_headline.png
 683  * skins/common/images/ar/button_italic.png
 684  * skins/common/images/ar/button_link.png
 685  * skins/common/images/ar/button_nowiki.png
 686  * skins/common/images/be-tarask/button_bold.png
 687  * skins/common/images/be-tarask/button_italic.png
 688  * skins/common/images/be-tarask/button_link.png
 689  * skins/common/images/cyrl/button_bold.png
 690  * skins/common/images/cyrl/button_italic.png
 691  * skins/common/images/cyrl/button_link.png
 692  * skins/common/images/de/button_bold.png
 693  * skins/common/images/de/button_italic.png
 694  * skins/common/images/fa/button_bold.png
 695  * skins/common/images/fa/button_headline.png
 696  * skins/common/images/fa/button_italic.png
 697  * skins/common/images/fa/button_link.png
 698  * skins/common/images/fa/button_nowiki.png
 699  * skins/common/images/icons/fileicon-c.png
 700  * skins/common/images/icons/fileicon-cpp.png
 701  * skins/common/images/icons/fileicon-deb.png
 702  * skins/common/images/icons/fileicon-djvu.png
 703  * skins/common/images/icons/fileicon-djvu.xcf
 704  * skins/common/images/icons/fileicon-dvi.png
 705  * skins/common/images/icons/fileicon-exe.png
 706  * skins/common/images/icons/fileicon-h.png
 707  * skins/common/images/icons/fileicon-html.png
 708  * skins/common/images/icons/fileicon-iso.png
 709  * skins/common/images/icons/fileicon-java.png
 710  * skins/common/images/icons/fileicon-mid.png
 711  * skins/common/images/icons/fileicon-mov.png
 712  * skins/common/images/icons/fileicon-o.png
 713  * skins/common/images/icons/fileicon-ogg.png
 714  * skins/common/images/icons/fileicon-ogg.xcf
 715  * skins/common/images/icons/fileicon-pdf.png
 716  * skins/common/images/icons/fileicon-ps.png
 717  * skins/common/images/icons/fileicon-psd.png
 718  * skins/common/images/icons/fileicon-rm.png
 719  * skins/common/images/icons/fileicon-rpm.png
 720  * skins/common/images/icons/fileicon-svg.png
 721  * skins/common/images/icons/fileicon-tar.png
 722  * skins/common/images/icons/fileicon-tex.png
 723  * skins/common/images/icons/fileicon-ttf.png
 724  * skins/common/images/icons/fileicon-txt.png
 725  * skins/common/images/icons/fileicon.png
 726  * skins/common/images/ksh/button_S_italic.png
 727  
 728  == Compatibility ==
 729  
 730  MediaWiki 1.24 requires PHP 5.3.2 or later. There is experimental support for
 731  HHVM 3.3.0.
 732  
 733  MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 734  support for them is somewhat less mature. There is experimental support for
 735  Oracle and Microsoft SQL Server.
 736  
 737  The supported versions are:
 738  
 739  * MySQL 5.0.2 or later
 740  * PostgreSQL 8.3 or later
 741  * SQLite 3.3.7 or later
 742  * Oracle 9.0.1 or later
 743  * Microsoft SQL Server 2005 (9.00.1399)
 744  
 745  == Upgrading ==
 746  
 747  1.24 has several database changes since 1.23, and will not work without schema
 748  updates. Note that due to changes to some very large tables like the revision
 749  table, the schema update may take quite long (minutes on a medium sized site,
 750  many hours on a large site).
 751  
 752  If upgrading from before 1.11, and you are using a wiki as a commons
 753  repository, make sure that it is updated as well. Otherwise, errors may arise
 754  due to database schema changes.
 755  
 756  If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 757  new database fields are filled with data.
 758  
 759  If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 760  1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 761  with MediaWiki 1.21.
 762  
 763  Don't forget to always back up your database before upgrading!
 764  
 765  See the file UPGRADE for more detailed upgrade instructions.
 766  
 767  For notes on 1.23.x and older releases, see HISTORY.
 768  
 769  == Online documentation ==
 770  
 771  Documentation for both end-users and site administrators is available on
 772  MediaWiki.org, and is covered under the GNU Free Documentation License (except
 773  for pages that explicitly state that their contents are in the public domain):
 774  
 775      https://www.mediawiki.org/wiki/Documentation
 776  
 777  == Mailing list ==
 778  
 779  A mailing list is available for MediaWiki user support and discussion:
 780  
 781      https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 782  
 783  A low-traffic announcements-only list is also available:
 784  
 785      https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 786  
 787  It's highly recommended that you sign up for one of these lists if you're
 788  going to run a public MediaWiki, so you can be notified of security fixes.
 789  
 790  == IRC help ==
 791  
 792  There's usually someone online in #mediawiki on irc.freenode.net.