Note about removing portal-url, currentevents-url and helppage from default Sidebar
[lhc/web/wiklou.git] / RELEASE-NOTES-1.22
1 Security reminder: MediaWiki does not require PHP's register_globals. If you
2 have it on, turn it '''off''' if you can.
3
4 == MediaWiki 1.22 ==
5
6 THIS IS NOT A RELEASE YET
7
8 MediaWiki 1.22 is an alpha-quality branch and is not recommended for use in
9 production.
10
11 === Configuration changes in 1.22 ===
12 * $wgRedirectScript was removed. It was unused.
13 * Removed $wgLocalMessageCacheSerialized, it is now always true.
14 * $wgVectorUseIconWatch is now enabled by default.
15 * $wgCascadingRestrictionLevels was added.
16 * ftps, ssh, sftp, xmpp, sip, sips, tel, sms, bitcoin, magnet, urn, and geo
17 have been whitelisted inside of $wgUrlProtocols.
18 * $wgDocType and $wgDTD have been removed and are no longer used for the DOCTYPE.
19 * $wgHtml5 is no longer used by core. Setting it to false will no longer disable HTML5.
20 It is still set to true for extension compatibility but doing so in extensions is deprecated.
21 * $wgXhtmlDefaultNamespace is no longer used by core. Setting it will no longer change the
22 xmlns used by MediaWiki. Reliance on this variable by extensions is deprecated.
23 * $wgHandheldStyle was removed.
24 * $wgHandheldForIPhone was removed.
25 * $wgJsMimeType is no longer used by core. Most usage has been removed since
26 HTML output is now exclusively HTML5.
27 * $wgDBOracleDRCP added. True enables persistent connection with DRCP on Oracle.
28 * $wgLogAutopatrol added to allow disabling logging of autopatrol edits in the logging table.
29 default for $wgLogAutopatrol is true.
30 * The 'edit' right no longer allows for editing a user's own CSS and JS.
31 * New rights 'editmyusercss', 'editmyuserjs', 'viewmywatchlist',
32 'editmywatchlist', 'viewmyprivateinfo', 'editmyprivateinfo', and
33 'editmyoptions' restrict actions that were formerly allowed by default. They
34 have been added to the default for $wgGroupPermissions['*'].
35 * The 'editprotected' right no longer allows bypassing of all page protection
36 restrictions. Any group using it for this purpose will now need to have all
37 the individual rights listed in $wgRestrictionTypes for the same effect.
38 * The 'protect' and 'autoconfirmed' rights are no longer used for the default
39 page protection levels. The rights 'editprotected' and 'editsemiprotected'
40 are now used for this purpose instead.
41 * (bug 40866) wgOldChangeTagsIndex removed.
42 * $wgNoFollowDomainExceptions now only matches entire domains. For example,
43 an entry for 'bar.com' will still match 'foo.bar.com' but not 'foobar.com'.
44 * $wgCopyUploadTimeout and $wgCopyUploadAsyncTimeout added to change the timeout times for
45 fetching the file during upload by url.
46 * New key added to $wgGalleryOptions - $wgGalleryOptions['mode'] to set
47 default gallery mode.
48 * New hook 'GalleryGetModes' to allow extensions to make new gallery modes.
49 * The checkbox for staying in HTTPS displayed on the login form when $wgSecureLogin is
50 enabled has been removed. Instead, whether the user stays in HTTPS will be determined
51 based on the user's preferences, and whether they came from HTTPS or not.
52 * $wgRC2UDPAddress, $wgRC2UDPInterwikiPrefix, $wgRC2UDPOmitBots, $wgRC2UDPPort,
53 and $wgRC2UDPPrefix configuration options have been deprecated in favor of a
54 $wgRCFeeds configuration array. $wgRCFeeds makes both the format and
55 destination of recent change notifications customizable, and allows for
56 multiple destinations to be specified.
57 * (bug 53862) portal-url, currentevents-url and helppage have been removed from the
58 default Sidebar.
59
60 === New features in 1.22 ===
61 * (bug 44525) mediawiki.jqueryMsg can now parse (whitelisted) HTML elements and attributes.
62 * (bug 33454) Language::sprintfDate now has a timezone parameter, and supports
63 the "eIOPTZ" formatting characters.
64 * EditWarning: A warning is shown when an editor leaves the edit form without
65 saving (enabled by default, users can opt-out via the 'useeditwarning'
66 preference). This feature was moved from the Vector extension, and is now part
67 of core for all skins. Take care when upgrading that you don't use an older
68 version of the Vector extension as this feature may conflict.
69 * New 'mediawiki.ui' CSS module providing mw-ui-* styles for buttons and a
70 compact vertical form layout.
71 * New versions of login (Special:UserLogin) and create account
72 (Special:UserLogin/signup) forms using the "vform" compact vertical form layout.
73 These forms use new messages that assume a "Help logging in" link, see
74 https://www.mediawiki.org/wiki/Manual:Page_customizations;
75 https://www.mediawiki.org/wiki/Account_creation_user_experience/Strings lists the
76 message key changes.
77 * (bug 23343) Implemented ability to apply IP blocks to the contents of X-Forwarded-For headers
78 by adding a new configuration variable $wgApplyIpBlocksToXff (disabled by default).
79 * The new hook 'APIGetPossibleErrors' to modify the list of possible errors was
80 added.
81 * (bug 25592) LogEventsList::showLogExtract() will now ignore various
82 Pager-related WebRequest parameters by default, as this is overwhelmingly
83 likely to be what was intended by users of the method. If any caller wishes
84 to use these parameters, the new param 'useRequestParams' may be set to true.
85 * mw.util.addPortletLink: Tooltip is no longer required to be plain (without
86 an accesskey in it already). As such it now rountrips. Creating a link with a
87 message as tooltip, grabbing the title attribute and using it to create
88 another portlet will work as expected.
89 * (bug 6747) {{ROOTPAGENAME}} introduced, contains the name of the topmost
90 page without namespace.
91 * BREAKING CHANGE: (bug 41729) Display editsection links next to headings. Also
92 change their class name from .editsection to .mw-editsection and place them at
93 the end of the heading element instead of the beginning. Client-side code and
94 screen-scrapers will have to be adjusted to handle both cases (old HTML will
95 still be visible on cached page renders until they are purged); extensions
96 using the DoEditSectionLink or EditSectionLink hooks might need adjustments as
97 well.
98 * (bug 45535) introduced the new 'LanguageLinks' hook for manipulating the
99 language links associated with a page before display.
100 * Chosen (http://harvesthq.github.io/chosen/) was added as module 'jquery.chosen'
101 * HTMLForm will turn multiselect checkboxes into a Chosen interface when setting cssclass 'mw-chosen'
102 * rebuildLocalisationCache learned --lang option. Let you rebuild l10n caches
103 of the specified languages instead of all of them.
104 * New GetNewMessagesAlert hook allowing extensions to disable or modify the new
105 messages alert
106 * New wgUserNewMsgRevisionId JS global for logged in users. This will be null
107 if the user has no new talk page messages. Otherwise it will be set to the
108 revision ID of the oldest new talk page message. This will allow gadgets and
109 extensions to create their own new message alerts on the client side.
110 * mediawiki.log: Added log.warn wrapper (uses console.warn and console.trace).
111 * mediawiki.log: Implemented log.deprecate. This method defines a property and
112 uses ES5 getter/setter to emit a warning when they are used.
113 * $wgCascadingRestrictionLevels was added, allowing one to specify restriction levels
114 which can be cascading (previously 'sysop' was hard-coded as the only one).
115 * XHTML5 support has been improved. If you set $wgMimeType = 'application/xhtml+xml'
116 MediaWiki will try outputting markup acording to XHTML5 rules.
117 * Altered hook 'ProtectionForm::save', adding the reason page protection is
118 changed as third parameter.
119 * New hook 'TitleSquidURLs' for manipulating the list of URLs to be purged from
120 HTTP caches when a page is changed.
121 * Changed the patrolling system to always show the link for patrolling in case the
122 current revision is patrollable. This also removed the usage of the rcid URI parameters.
123 * Oracle DB backend now supports Database Resident Connection Pooling (DRCP).
124 Can be enabled by setting $wgDBOracleDRCP=true.
125 Requires Oracle DB 11gR1 or above, enabled DRCP inside the DB itself and a
126 propper connect string.
127 More about DRCP can be found at:
128 http://www.oracle-base.com/articles/11g/database-resident-connection-pool-11gr1.php
129 * Add a new parameter $patrolFooterShown to hook ArticleViewFooter so the hook
130 handlers can take further action based on the status of the patrol footer
131 * A new hook TitleQuickPermissions was added to allow overriding of quick
132 permissions in the Title class.
133 * LinkCache singleton can now be altered or cleared, letting one to specify
134 another instance that does not rely on a database backend.
135 * MediaWiki's PHPUnit tests can now use PHPUnit installed using composer --dev.
136 * (bug 43689) The lists of templates used on the page and hidden categories it
137 is a member of, shown below the edit form, are now collapsible (and collapsed
138 by default).
139 * Parser profiling data, formerly only available in the "NewPP limit report"
140 HTML comment, is now also displayed at the bottom of page previews.
141 * Added ParserLimitReportPrepare and ParserLimitReportFormat hooks, deprecated
142 ParserLimitReport hook.
143 * New user rights have been added to increase granularity in rights management
144 for extensions such as OAuth:
145 ** editmyusercss controls whether a user may edit their own CSS subpages.
146 ** editmyuserjs controls whether a user may edit their own JS subpages.
147 ** viewmywatchlist controls whether a user may view their watchlist.
148 ** editmywatchlist controls whether a user may edit their watchlist.
149 ** viewmyprivateinfo controls whether a user may access their private
150 information (e.g. registered email address, real name).
151 ** editmyprivateinfo controls whether a user may change their private
152 information.
153 ** editmyoptions controls whether a user may change their preferences.
154 * Add new hook AbortTalkPageEmailNotification, this will be used to determine
155 whether to send the regular talk page email notification
156 * Action classes registered in $wgActions are now also supported in the form of
157 a callback (which returns an instance of Action) instead of providing the name
158 of a subclass of Action.
159 * (bug 46513) Vector: Add the collapsibleTabs script from the Vector extension.
160 * Added $wgRecentChangesFlags for defining new flags for RecentChanges and
161 watchlists.
162 * (bug 40518) mw.toolbar: Implemented mw.toolbar.addButtons for adding multiple
163 button objects in one call.
164 * Rights used for the default protection levels ('sysop' and 'autoconfirmed')
165 are now used just for that purpose, instead of overloading other rights. This
166 allows easy granting of the ability to edit sysop-protected pages without
167 also granting the ability to protect and unprotect.
168 * (bug 48256) Make brackets in section edit links accessible to CSS.
169 They are now wrapped in <span class="mw-editsection-bracket" />.
170 * (bug 8480) Allow handler specific parameters in galleries (like page number)
171 * jquery.client: Add detection for Opera 15 and Internet Explorer 11.
172 * Change tags (used by the AbuseFilter extension) are now shown on diff pages.
173 * Change tag lists (shown on recent changes, watchlist, user contributions,
174 history pages, diff pages) now include a link to Special:Tags to distinguish
175 them from edit summaries.
176 * Added a new method and hook, User::isEveryoneAllowed() and
177 UserIsEveryoneAllowed, for use in situations where a "does everyone have this
178 right?" check is used to avoid more expensive checks.
179 * (bug 14431) Display "(No difference)" instead of an empty diff (when comparing
180 revisions in the history or when previewing changes while editing).
181 * New hook 'IsUploadAllowedFromUrl' is added which can be used to intercept uploads by
182 URL, useful for blacklisting specific URLs
183 * (bug 21912) Watchlist token implementation has been refactored and
184 Special:ResetTokens was added to allow users to reset their tokens
185 instead of presenting them in Preferences.
186 * Special:PrefixIndex now lets you strip the searched prefix from the displayed
187 titles. Given a list of articles named Bug1, Bug2, you can now transclude the
188 list of bug numbers using: {{Special:PrefixIndex/Bug|stripprefix=1}}.
189 The special page form received a new checkbox matching that option.
190 * (bug 23580) Implement javascript callback interface "mw.hook".
191 * (bug 30713) New mw.hook "wikipage.content".
192 * (bug 40430) jquery.placeholder gets a new parameter to set the attribute value
193 to be used.
194 * $wgHTCPMulticastRouting renamed $wgHTCPRouting since it accepts unicast.
195 * $wgHTCPRouting rules can now be passed an array of hosts/ports to send purge
196 too. Can be used whenever several multicast group could be interested by a
197 specific purge.
198 * (bug 25931) Add Special:RandomInCategory.
199 * mediawiki.util: addPortletLink now supports passing a jQuery object as nextnode.
200 * <wbr> can now be used inside WikiText.
201 * WebResponse::setcookie is much more featureful. Callers using PHP's
202 setcookie() or setrawcookie() should begin using this instead.
203 * New hook WebResponseSetCookie, called from WebResponse::setcookie().
204 * New hook ResetSessionID, called when the session id is reset.
205 * Add a mode parameter to <gallery> tag with potential options of "traditional",
206 "nolines", "packed", "packed-overlay", or "packed-hover".
207 * (bug 47399) A success message is now displayed after changing the password.
208 * Make thumb.php give HTTP redirects for file redirects
209 * (bug 30607) Special:ListFiles can now show old versions of files. Additionally
210 Special:AllMyUploads was introduced so the user can get a list of all things
211 they have ever uploaded, even if it was subsequently overriden.
212 * Introduced Special:MyFiles and Special:AllMyFiles as an alias for Special:MyUploads
213 and Special:AllMyUploads respectively.
214 * IPv6 addresses in X-Forwarded-For headers are now normalised before checking
215 against allowed proxy lists.
216 * Add deferrable update support for callback/closure
217 * Add TitleMove hook before page renames
218 * Revision deletion backend code is moved out of SpecialRevisiondelete
219
220 === Bug fixes in 1.22 ===
221 * Disable Special:PasswordReset when $wgEnableEmail is false. Previously one
222 could still navigate to the page by entering the URL directly.
223 * (bug 47138) Fixed a fatal error when a blocked user tries to automatically
224 create an account on login due external authentication in some circumstances.
225 * (bug 23393) HTML <hN> headings containing line breaks are now handled
226 correctly.
227 * (bug 45803) Whitespace within == Headline == syntax and within <hN> headings
228 is now non-significant and not preserved in the HTML output.
229 * (bug 47218) Special:BlockList now handles correctly user names with spaces
230 when passed as subpage.
231 * Pager's properly validate which fields are allowed to be sorted on.
232 * mw.util.tooltipAccessKeyRegexp: The regex now matches "option-" as well.
233 Support for Mac "option" was added in 1.16, but the regex was never updated.
234 * (bug 46768) Usernames of blocking users now display correctly, even if numeric.
235 * (bug 39590) {{PAGESIZE}} for the current page and self-transclusions now
236 show the most up to date result always instead of being a revision behind.
237 * A bias in wfRandomString() toward digits 1-7 has been corrected. Generated
238 strings will now start with digits 0 and 8-f as often as they should.
239 * (bug 45371) Removed Parser_LinkHooks and CoreLinkFunctions classes.
240 * (bug 41545) Allow <kbd>, <samp>, and <var> to be nested like allowed in html.
241 * PLURAL magic word no longer causes a PHP notice when no matching form exists.
242 * (bug 36641) Patrol page links no longer show on non-existent revisions.
243 * (bug 35810) Pages not linked from Special:RecentChanges or Special:NewPages
244 are patrollable now.
245 * (bug 30213) JavaScript for search suggestions is now disabled when the API
246 is disabled, and AJAX patrolling and watching are now disabled when use of
247 the write API is not allowed.
248 * (bug 48294) API: Fix chunk upload async mode.
249 * (bug 46749) Broken files tracking category removed from pages if an image
250 with that name is uploaded.
251 * (bug 14176) System messages that are empty were previously incorrectly treated
252 as non-existent, causing a fallback to the default. This stopped users from
253 overriding system messages to make them blank.
254 * (bug 48319) action=parse no longer returns an error if passed none of 'oldid',
255 'pageid', 'page', 'title', and 'text' (e.g. if only passed 'summary'). A
256 warning will instead be issued if 'title' is non-default, unless no props are
257 requested.
258 * Special:Recentchangeslinked will now include upload log entries
259 * (bug 41281) Fixed ugly output if file size could not be extracted for multi-page media.
260 * (bug 50315) list=logevents API module will now output log entries by anonymous users.
261 * (bug 38911) Handle headers with rowspan in jquery.tablesorter
262 * (bug 658) Converted the table of contents on wiki pages from <table> to <div>
263 and adjusted skin CSS accordingly. The CSS was carefully crafted to be
264 backwards-compatible in all reasonable cases (uses of the __TOC__ magic word,
265 the #toc CSS id and the .toc CSS class). However, particularly bad abuse of
266 the id or the class can possibly break.
267 * CSSJanus now supports rgb, hsl, rgba, and hsla color syntaxes.
268 * Special:Listfiles can no longer be sorted by image name when filtering
269 by user in miser mode.
270 * (bug 49074) CSSJanus: Handle values of border-radius correctly.
271 * Handle relative inclusions ({{../name}}) in main namespace with subpages
272 enabled correctly (previously MediaWiki tried to include Template:Parent/name
273 instead of just Parent/name).
274 * Added $wgAPIUselessQueryPages to allow extensions to flag their query pages
275 for non-inclusion in ApiQueryQueryPages.
276 * (bug 50870) mediawiki.notification: Notification area should remain visible
277 when scrolled down.
278 * (bug 13438) Special:MIMESearch no longer an expensive special page.
279 * (bug 48342) Fixed a fatal error when $wgValidateAllHtml is set to true and
280 the function apache_request_headers() function is not available.
281 * (bug 33399) LivePreview: Re-run wikipage content handlers
282 (jquery.makeCollapsible, jquery.tablesorter) after preview content is loaded.
283 * (bug 51891) Fixed PHP notice on Special:PagesWithProp when no properties
284 are defined.
285 * (bug 52006) Corrected documentation of $wgTranscludeCacheExpiry.
286 * (bug 52077) The APIEditBeforeSave hook is giving the content of the whole
287 revision as second argument now, rather than just the current section.
288 * (bug 49694) $wgSpamRegex is now also applied on the new section headline text
289 adding a new topic on a page
290 * (bug 41756) Improve treatment of multiple comments on a blank line.
291 * (bug 51064) Purge upstream caches when deleting file assets.
292 * (bug 39012) File types with a mime that we do not know the extension for
293 can no longer be uploaded as an extension that we do know the mime type
294 for.
295 * (bug 51742) Add data-sort-value for better sorting of hitcounts Special:Tags
296 * (bug 26811) On DB error pages, server hostnames are now hidden when both
297 $wgShowHostnames and $wgShowSQLErrors are false.
298 * (bug 6200) line breaks in <blockquote> are handled like they are in <div>
299
300 === API changes in 1.22 ===
301 * (bug 25553) The JSON output formatter now leaves forward slashes unescaped
302 to improve human readability of URLs and similar strings. Also, a "utf8"
303 option is now provided to use UTF-8 encoding instead of hex escape codes
304 for most non-ASCII characters.
305 * (bug 46626) xmldoublequote parameter was removed. Because of a bug, the
306 parameter has had no effect since MediaWiki 1.16, and so its removal is
307 unlikely to impact existing clients.
308 * (bug 47216) action=query&meta=siteinfo&siprop=skins will now indicate which
309 skin is the default and which are unusable (e.g. listed in $wgSkipSkins).
310 * (bug 25325) Added support for wlshow filtering (bots/anon/minor/patrolled)
311 to action=feedwatchlist.
312 * WDDX formatted output will actually be formatted (and normal output will no
313 longer be), and will no longer choke on booleans.
314 * action=opensearch no longer silently ignores the format parameter.
315 * action=opensearch now supports format=jsonfm.
316 * list=usercontribs&ucprop=ids will now include the parent revision id.
317 * BREAKING CHANGE: action=parse no longer returns all langlinks for the page
318 with prop=langlinks by default. The new effectivelanglinks parameter will
319 request that the LanguageLinks hook be called to determine the effective
320 language links.
321 * BREAKING CHANGE: list=allpages, list=langbacklinks, and prop=langlinks do not
322 apply the new LanguageLinks hook, and thus only consider language links
323 stored in the database.
324 * (bug 47219) Allow specifying change type of Wikipedia feed items
325 * prop=imageinfo now allows setting iiurlheight without setting iiurlwidth
326 * prop=info now adds the content model and page language of the title.
327 * New upload log entries will now contain information on the relevant
328 image (sha1 and timestamp).
329 * (bug 49239) action=parse now can parse in preview and section preview modes.
330 * (bug 49259) action=patrol now accepts revision ids.
331 * (bug 48129) list=blocks&bkip= now correctly handles IPv6 CIDR ranges and
332 honors $wgBlockCIDRLimit. Note any clients passing invalid values to bkip
333 will now receive an error, rather than the previous behavior listing all
334 user blocks.
335 * (bug 48201) action=parse&text=foo now assumes wikitext if no title is given,
336 rather than using the content model of the page "API".
337 * action=watch may now return errors.
338 * (bug 50785) action=purge with forcelinkupdate=1 no longer queues refreshLinks
339 jobs in the job queue for link table updates of pages that use the given page
340 as a template. Instead, forcerecursivelinkupdate=1 is introduced and should
341 be used if that behaviour is desirable.
342 * The 'debugLog' property (enabled by $wgDebugToolbar) no longer sets the log
343 entry values through ApiResult::content but directly. This changes the JSON
344 output from an array of objects with content in '*' to an array of strings
345 with the content.
346 * (bug 51342) prop=imageinfo iicontinue now contains the dbkey, not the text
347 version of the title.
348 * (bug 52538) action=edit will now use empty text instead of the contents
349 of section 0 when passed prependtext or appendtext with section=new.
350 * Support for the 'gettoken' parameter to action=block and action=unblock,
351 deprecated since 1.20, has been removed.
352 * (bug 49090) Token-getting functions will fail when using jsonp callbacks.
353 * (bug 52699) action=upload returns normalized file name on warning
354 "exists-normalized" instead of filename to be uploaded to.
355
356 === Languages updated in 1.22===
357
358 MediaWiki supports over 350 languages. Many localisations are updated
359 regularly. Below only new and removed languages are listed, as well as
360 changes to languages because of Bugzilla reports.
361
362 * Batak Toba (bbc-latn) added.
363 * (bug 46751) Made Buryat (Russia) (буряад) (bxr) fallback to Russian.
364
365 === Other changes in 1.22 ===
366 * BREAKING CHANGE: Implementation of MediaWiki's JS and JSON value encoding
367 has changed:
368 ** MediaWiki no longer supports PHP installations in which the native JSON
369 extension is missing or disabled.
370 ** XmlJsCode objects can no longer be nested inside objects or arrays.
371 (For Xml::encodeJsCall(), this individually applies to each argument.)
372 ** The sets of characters escaped by default, along with the precise escape
373 sequences used, have changed (except for the Xml::escapeJsString()
374 function, which is now deprecated).
375 * BREAKING CHANGE: The Services_JSON class has been removed. If necessary,
376 be sure to upgrade affected extensions at the same time (e.g. Collection).
377 * redirect.php was removed. It was unused.
378 * ClickTracking integration was dropped from the mediaWiki.user.bucket
379 JavaScript function. The 'tracked' option is now ignored.
380 * BREAKING CHANGE: Legacy skins Simple, MySkin, Chick, Standard and Nostalgia
381 were all removed. (Nostalgia was moved to an extension.) The SkinLegacy and
382 LegacyTemplate classes that supported them were removed as well and are now a
383 part of the Nostalgia extension.
384 * Event namespace used by jquery.makeCollapsible has been changed from
385 'mw-collapse' to 'mw-collapsible' for consistency with the module name.
386 * BREAKING CHANGE: The "ExternalAuth" authentication subsystem was removed, along
387 with its associated globals of $wgExternalAuthType, $wgExternalAuthConf,
388 $wgAutocreatePolicy and $wgAllowPrefChange. Affected users are encouraged to
389 use AuthPlugin for external authentication/authorization needs.
390 * The Quickbar feature of the legacy skin model and the last remnants of it
391 throughout the code base have been removed.
392 * Externaledit/externaldiff preference was removed. Very few users used this
393 feature, and improper configuration can actually prevent a user from editing
394 * Calling Linker methods using a skin will now output deprecation warnings.
395 * (bug 46680) "Return to" links are no longer tagged with rel="next".
396 * BREAKING CHANGE: mw.util.tooltipAccessKeyRegexp: The match group for the
397 accesskey character is now $6 instead of $5.
398 * HipHop compiler (hphpc) support was removed. HipHop VM support (hhvm) was
399 added.
400 * A new Special:Redirect page was added, providing lookup by revision ID,
401 user ID, or file name. The old Special:Filepath page was reimplemented
402 to redirect through Special:Redirect.
403 * Monobook: Removed the old conditional stylesheets for Opera 6, 7 and 9.
404 * Support for XHTML 1.0 has been removed. MediaWiki now only outputs (X)HTML5.
405 * wikibits: User-agent related globals have been deprecated. The following
406 properties now default to false and emit mw.log.warn: is_gecko, is_chrome_mac,
407 is_chrome, webkit_version, is_safari_win, is_safari, webkit_match, is_ff2,
408 ff2_bugs, is_ff2_win, is_ff2_x11, opera95_bugs, opera7_bugs, opera6_bugs,
409 is_opera_95, is_opera_preseven, is_opera, and ie6_bugs.
410 * (bug 48276) MediaWiki will now flash a confirmation message upon successfully
411 editing a page.
412 * (bug 40785) mediawiki.legacy.ajax has been marked as deprecated. The following
413 properties now emit mw.log.warn when accessed: sajax_debug, sajax_init_object,
414 sajax_do_call and wfSupportsAjax.
415 * BREAKING CHANGE: meta keywords are no longer supported. A <meta name="keywords"
416 will no longer be output and OutputPage::addKeyword no longer exists.
417 * Methods Title::userCanEditCssSubpage and Title::userCanEditJsSubpage,
418 deprecated since 1.19, have been removed.
419 * (bug 50134) Hook functions are no longer required to return a value. When a
420 hook function does not return a value (or when it returns an explicit null),
421 processing continues. To abort the hook, a hook function must return an
422 explicit, boolean false or a string error message. Other falsey values are
423 tantamount to a 'return true' in earlier versions of MediaWiki.
424 * BREAKING CHANGE: The EditSectionLink hook was removed after being
425 deprecated since MediaWiki 1.14. Use DoEditSectionLink instead.
426 * (bug 48256) The 'editsection-brackets' optional message was removed.
427 Section edit links' brackets can now be customized using CSS by
428 styling span.mw-editsection-bracket.
429 * The usePatrol function in ChangesList has been marked as deprecated.
430 * (bug 50785) A "null edit", that is, a save action in which no changes to the
431 page text are made and no revision recorded, will no longer send refreshLinks
432 jobs to the job table to update pages which use the edited page as a template.
433 * The LivePreviewPrepare and LivePreviewDone events triggered on "jQuery( mw )"
434 have been deprecated in favour of using mw.hook.
435 * The 'showjumplinks' user preference has been removed, jump links are now
436 always included.
437 * Methods RecentChange::notifyRC2UDP, RecentChange::sendToUDP, and
438 RecentChange::cleanupForIRC have been deprecated, as it is now the
439 responsibility of classes implementing the RCFeedFormatter and RCFeedEngine
440 interfaces to implement the formatting and delivery for recent change
441 notifications.
442 * SpecialPrefixindex methods namespacePrefixForm() and showPrefixChunk() have
443 been made protected. They were accepting form variance arguments, this is now
444 using properties in the SpecialPrefixindex class.
445 * (bug 50310) BREAKING CHANGE: wikibits: Drop support for mwCustomEditButtons.
446 It defaults to an empty array and emits mw.log.warn when accessed.
447 * BREAKING CHANGE: Special:Disambiguations has been removed from MediaWiki core.
448 Functions related to disambiguation pages are now handled by the Disambiguator
449 extension (https://www.mediawiki.org/wiki/Extension:Disambiguator) (bug
450 35981).
451 * BREAKING CHANGE: The 'mediawiki.legacy.wikiprintable' module has been removed.
452 The skins/common/wikiprintable.css file no longer exists. Return value of
453 Skin#commonPrintStylesheet is ignored. Please use the 'mediawiki.legacy.commonPrint'
454 module instead or base your skin on SkinTemplate.
455
456 == Compatibility ==
457
458 MediaWiki 1.22 requires PHP 5.3.2 or later.
459
460 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
461 support for them is somewhat less mature. There is experimental support for
462 Oracle.
463
464 The supported versions are:
465
466 * MySQL 5.0.2 or later
467 * PostgreSQL 8.3 or later
468 * SQLite 3.3.7 or later
469 * Oracle 9.0.1 or later
470
471 == Upgrading ==
472
473 1.22 has several database changes since 1.21, and will not work without schema
474 updates. Note that due to changes to some very large tables like the revision
475 table, the schema update may take quite long (minutes on a medium sized site,
476 many hours on a large site).
477
478 If upgrading from before 1.11, and you are using a wiki as a commons
479 repository, make sure that it is updated as well. Otherwise, errors may arise
480 due to database schema changes.
481
482 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
483 new database fields are filled with data.
484
485 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
486 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
487 with MediaWiki 1.21.
488
489 Don't forget to always back up your database before upgrading!
490
491 See the file UPGRADE for more detailed upgrade instructions.
492
493 For notes on 1.21.x and older releases, see HISTORY.
494
495 == Online documentation ==
496
497 Documentation for both end-users and site administrators is available on
498 MediaWiki.org, and is covered under the GNU Free Documentation License (except
499 for pages that explicitly state that their contents are in the public domain):
500
501 https://www.mediawiki.org/wiki/Documentation
502
503 == Mailing list ==
504
505 A mailing list is available for MediaWiki user support and discussion:
506
507 https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
508
509 A low-traffic announcements-only list is also available:
510
511 https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
512
513 It's highly recommended that you sign up for one of these lists if you're
514 going to run a public MediaWiki, so you can be notified of security fixes.
515
516 == IRC help ==
517
518 There's usually someone online in #mediawiki on irc.freenode.net.