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Maniphest T2209

[DO NOT USE] HTML validity (tracking)
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Description

This task is archived, see reasons at T102492.

This is a tracking bug for problems with HTML output compliance and compatibility.

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StatusSubtypeAssignedTask
 ResolvedNoneT12467 Use semantic HTML (tracking)
 ResolvedNoneT2209 [DO NOT USE] HTML validity (tracking)
 Resolved• TrevorParscalT18590 Invalid HTML if both "about" and "disclaimer" are "-"
 ResolvedNoneT4050 Using nonexistent template in table header inserts an extraneous ">" into the rendered page
 ResolvedNoneT2211 Tabbed preferences form not tabbing with XHTML mime type
 Resolved• brookeT2240 Need to perform Unicode normalization
 ResolvedNoneT11338 Need to sanitize sidebar XHTML (identifiers, etc.) when accepting raw titles in sidebar message
 ResolvedNoneT4186 document.write() breaks under application/xhtml+xml in skins/common/wikibits.js
 ResolvedNoneT2460 Table rendering bug : extra </center> tags break table columns
 DeclinedNoneT15016 Anchor encoding is not one-to-one
 ResolvedNoneT4494 in Config/index.php missing opening <p> tag.
 ResolvedNoneT2697 Several XHTML errors on Special:Preferences
 DeclinedNoneT11530 Section heading anchors shouldn't begin with invalid characters
 ResolvedNoneT4567 & should be escaped to &amp; in pages' category titles
 ResolvedNoneT4571 Duplicate anchors and missing form id tag in search form on Cologne Blue skin
 ResolvedNoneT2925 rendering of heading containing <math>
 ResolvedNoneT4663 Missing <p> tag in Special:Contributions header
 ResolvedNoneT2995 Recentchanges "p-tb" toolbox RSS item not valid HTML/XHTML & list looks wrong
 DeclinedNoneT3038 Reflect XHTML trend from "b" and "i" towards "strong" and "em"
 ResolvedNoneT3124 <gallery> syntax is not valid xhtml 1.0
 ResolvedNoneT18891 Id conflicts between headers are possible in obscure circumstances
 ResolvedNoneT4870 PATCH: Fix invalid XHTML ouput generated by includes/EditPage.php
 ResolvedNoneT6515 The Sanitizer doesn't validate the contents of id attributes
 ResolvedNoneT6461 <span id="characters that should be encoded"> and [[#chara...]] breaks
 ResolvedNoneT12009 Sidebar can generate invalid HTML
 DeclinedNoneT6557 <strike> tag is deprecated in HTML5; normalize to <s> in parser/sanitizer
 DeclinedNoneT42579 Update Sanitizer to support replacement of whole elements instead of just attributes.
 ResolvedNoneT11807 Cite should not generate an empty reference list when no references are used on the page
 ResolvedNoneT3483 Centering the output of an extension improperly nests tags
 ResolvedNoneT3487 Special:Ipblocklist not valid XHTML by default
 ResolvedNoneT3480 Classic skins displayed as XML tree in Firefox with XHTML content-type
 InvalidNoneT11880 wfMsgWikiHtml does not ensure XHTML validity
 InvalidNoneT3608 yet more XHTML errors!
 ResolvedNoneT3634 invalid XHTML on VfD page (en.wikipedia)
 ResolvedNoneT5243 & in page titles is not appropriately escaped in various cases
 ResolvedNoneT3830 Some wiki markup for table causes invalid XHTML output
 ResolvedNoneT10264 JavaScript global variables fail in XHTML mode
 ResolvedNoneT5487 Category contents is not shown if the preview is at the bottom
 Resolved• TrevorParscalT13777 Multiple inputboxes make page invalid due to repetitive similar id
 ResolvedNoneT8816 Special chracters in article names are not converted to HTML entities in the h1 section
 ResolvedNoneT8829 zh.wikinews - not valid xhtml
 DeclinedNoneT12218 Sanitizer doesn't validate attribute values according to DTD
 ResolvedNoneT8986 h1 #firstHeading not HTML-escaped
 ResolvedtstarlingT15700 Missing mandatory alt attribute in thumb/preview image
 ResolvedNoneT14077 TOC causes w3c html validation to fail (if Tidy not enabled)
 ResolvedNoneT15909 Trying to 'indent' an input box breaks the formatting on the rest of the page.
 ResolvedNoneT15922 Special:Prefixindex is invalid when empty list
 ResolvedNoneT14166 PATCH - Special:Emailuser - removed invalid attribute
 ResolvedNoneT15913 Special:Whatlinkshere with invalid HTML markup
 ResolvedNoneT15925 PATCH - Special:Search - invalid result list fixing
 ResolvedNoneT15926 Sanitizer should check for duplicated user interface ids
 ResolvedNoneT15924 Special:Search Powersearch form totally invalid
 ResolvedNoneT15949 Special:PrefixIndex/AllPages paging links contain invalid XML
 DeclinedNoneT11095 bad xhtml formation in page rendering when updating a image
 ResolvedNoneT17835 Add meta Content-Style-Type tag
 ResolvedNoneT19650 XHTML validation errors -- some "id" attributes are not unique
 ResolvedNoneT14887 PATCH - Article.php - removed invalid attribute
 Duplicate• TrevorParscalT26500 Do not output empty portlets
 ResolvedNoneT16727 Upgrade to Ploticus 2.41 to fix non-conformant XHTML in EasyTimeline
 DeclinedNoneT26918 Do not allow #, %, [, ], nbsp in fragment identifiers
 DeclinedNoneT37371 Sidebar generates duplicate IDs
 Duplicate• TrevorParscalT25575 Vector is invalid XHTML (empty UL elements)
 ResolvedIznoT46609 Stop adding xml:lang attributes to HTML5 pages
 InvalidNoneT41614 Replace deprecated HTML tags in HTML5
 ResolvedTheDJT41726 WikiEditor builds tables in toolbar using obsolete attribute valign (in HTML5)
 ResolvedNoneT50333 Invalid HTML5: Bad value 100% for attribute width on element img
 ResolvedIoannisKydonisT42215 Special:ValidationStatistics uses align attribute (obsolete in HTML5)
 DeclinedNoneT51337 Well formed XML (tracking)
 DeclinedNoneT10948 Parser: HTML table syntax (e.g. <td>) should not be parsed when inside <pre>
 ResolvedPhysikerweltT21177 Invalid HTML when using some math formulas
 ResolvedJdforrester-WMFT69084 TemplateData: Use <code> rather than <tt> elements in the display table
 ResolvedNoneT74458 [[Special:Search]] should not use obsolete "cellpadding" attribute (use CSS instead)
 ResolvedPhoenix303T74519 LQT should not use obsolete HTML attributes (use CSS instead of valign, align and width)
 ResolvedTptT76284 ProofreadPage should not use obsolete HTML attributes
 ResolvedKrinkleT105436 Link tag generated for modules loading bottom fails HTML validation service
 ResolvedferveoT99025 Duplicate IDs on Special:Version
 DeclinedKrinkleT37914 Wikimedia projects do not pass W3's validation
 ResolvedKrinkleT42385 HTML validation: Bad value edit for attribute rel on element link: Keyword edit is not registered.
 ResolvedNoneT42384 HTML validation: Attribute width/height not allowed on element button at this point
 ResolvedPaladoxT134108 Wikibase should not use obsolete "valign" attribute on diffs
ResolvedPhysikerweltT92812 The <meta> tag is invalid inside the body of the document
 DuplicateNoneT168624 W3C Validator complains about <dd> elements missing <dt> children, and some unknown "language" parameter values
 ResolvedFomafixT169551 Nu Html Checker generates error because of <div> inside of <h3>
 ResolvedNoneT123242 Special:ComparePages fails HTML validation
 DuplicateNoneT152050 "de-formal" is no valid HTML language code
 ResolvedcscottT106367 Generate BCP 47 conform language codes for the HTML attribute `lang`
 ResolvedFomafixT167284 Nu Html Checker generates warning because of <link rel="copyright">
 ResolvedFomafixT171423 Nu Html Checker generates error because of <div> inside of <span>
 ResolvedTheresNoTimeT173375 Special:SkinDistributor fails HTML validation
 ResolvedEugene233T175645 Use CSS to set the width of cells at Special:Newsletters
 ResolveddivadsnT182968 Timeline extension error messages should not use deprecated tag <tt>

Event Timeline

There are a very large number of changes, so older changes are hidden. Show Older Changes
MarkAHershberger added a comment.Dec 2 2010, 10:42 PM

using 1.17, I got only the following from the validator:

Warning Line 27, Column 77: The language attribute on the script element is obsolete. You can safely omit it.

<div id="siteNotice"><script type="text/javascript" language="JavaScript">
• bzimport added a comment.Dec 3 2010, 12:10 AM

ayg wrote:

(In reply to comment #14)

using 1.17, I got only the following from the validator:

Warning Line 27, Column 77: The language attribute on the script element is
obsolete. You can safely omit it.

<div id="siteNotice"><script type="text/javascript" language="JavaScript">

Should be fixed in r77619. It's a problem with DismissableSiteNotice, not MediaWiki itself. (But you aren't supposed to mention bugs in tracking bugs, you're supposed to file a new bug and mark it blocking this.)

siebrand added a comment.Oct 24 2012, 5:32 PM

Should this issue be closed, as from now on, we're aiming to be HTML5-ish compliant?

• Nikerabbit added a comment.Oct 24 2012, 7:02 PM

We are currently supporting both and the html generation APIs are nicely abstracting the details away.

DanielFriesen added a comment.Jun 8 2013, 3:12 PM

Now that we don't support XHTML 1.0 and many of the dependent bugs aren't really XHTML issues I'm making this our HTML validity tracking bug. bug 49337 will also cover things that affect our well formed XML feature.

He7d3r added a subtask: T76284: ProofreadPage should not use obsolete HTML attributes.Nov 30 2014, 11:24 AM
TheDJ closed subtask T46609: Stop adding xml:lang attributes to HTML5 pages as Resolved.Apr 13 2015, 8:08 AM
Paladox closed subtask T74519: LQT should not use obsolete HTML attributes (use CSS instead of valign, align and width) as Resolved.Apr 27 2015, 1:14 PM
Bugreporter mentioned this in T102492: Replace tracking bug T2209 by new project tag "HTML".Jun 15 2015, 4:22 PM
Tpt closed subtask T76284: ProofreadPage should not use obsolete HTML attributes as Resolved.Jul 10 2015, 2:14 AM
GOIII added a parent task: T105436: Link tag generated for modules loading bottom fails HTML validation service.Jul 10 2015, 2:42 AM
GOIII removed a parent task: T105436: Link tag generated for modules loading bottom fails HTML validation service.Jul 10 2015, 2:48 AM
GOIII added a subtask: T105436: Link tag generated for modules loading bottom fails HTML validation service.
Ricordisamoa added a subtask: T99025: Duplicate IDs on Special:Version.Sep 16 2015, 3:07 PM
Ricordisamoa subscribed.
Ricordisamoa added subtasks: T37914: Wikimedia projects do not pass W3's validation, T42385: HTML validation: Bad value edit for attribute rel on element link: Keyword edit is not registered., T42384: HTML validation: Attribute width/height not allowed on element button at this point.Sep 23 2015, 11:39 PM
Krinkle closed subtask T37914: Wikimedia projects do not pass W3's validation as Declined.Sep 23 2015, 11:47 PM
Liuxinyu970226 set Security to None.Sep 28 2015, 9:11 AM
Physikerwelt closed subtask T21177: Invalid HTML when using some math formulas as Resolved.Nov 22 2015, 3:05 PM
He7d3r mentioned this in T12467: Use semantic HTML (tracking).May 1 2016, 12:40 PM
He7d3r updated the task description. (Show Details)
He7d3r added a subtask: T134108: Wikibase should not use obsolete "valign" attribute on diffs .
Danny_B added a subtask: T92812: The <meta> tag is invalid inside the body of the document.May 23 2016, 5:00 PM
Danny_B closed subtask T6557: <strike> tag is deprecated in HTML5; normalize to <s> in parser/sanitizer as Declined.May 23 2016, 6:07 PM
• Phabricator_maintenance removed a parent task: T4007: [DO NOT USE] Tracking bug [superseded by #Tracking].Jul 28 2016, 2:33 AM
Krinkle closed subtask T105436: Link tag generated for modules loading bottom fails HTML validation service as Resolved.Aug 5 2016, 2:43 AM
Physikerwelt closed subtask T92812: The <meta> tag is invalid inside the body of the document as Resolved.Aug 9 2016, 12:44 PM
Redrose64 reopened subtask T46609: Stop adding xml:lang attributes to HTML5 pages as Open.Sep 17 2016, 8:50 AM
thiemowmde closed subtask T134108: Wikibase should not use obsolete "valign" attribute on diffs as Resolved.Oct 17 2016, 9:33 AM
Izno closed subtask T42215: Special:ValidationStatistics uses align attribute (obsolete in HTML5) as Resolved.Nov 11 2016, 12:37 AM
Izno closed subtask T99025: Duplicate IDs on Special:Version as Resolved.Nov 11 2016, 12:42 AM
Liuxinyu970226 moved this task from Tag to Transition suggested on the Tracking-Neverending board.Dec 24 2016, 1:10 AM
Liuxinyu970226 subscribed.

Per T102492

MarkAHershberger unsubscribed.Dec 24 2016, 1:31 AM
Perhelion changed the status of subtask T40487: Remove button for <big> from toolbar from Open to Stalled.Mar 30 2017, 9:11 AM
Nemo_bis closed subtask T40487: Remove button for <big> from toolbar as Declined.Mar 31 2017, 9:43 AM
Jdforrester-WMF reopened subtask T40487: Remove button for <big> from toolbar as Stalled.Apr 1 2017, 3:47 PM
Aklapper added a subtask: T168624: W3C Validator complains about <dd> elements missing <dt> children, and some unknown "language" parameter values.Jun 22 2017, 1:37 PM
Ricordisamoa added a subtask: T169551: Nu Html Checker generates error because of <div> inside of <h3>.Jul 4 2017, 1:21 AM
Ricordisamoa updated the task description. (Show Details)
Ricordisamoa added a subtask: T123242: Special:ComparePages fails HTML validation.
Ricordisamoa added a subtask: T75291: Flow: Make our HTML validate.Jul 4 2017, 1:25 AM
Ricordisamoa added a subtask: T152050: "de-formal" is no valid HTML language code.
Ricordisamoa added a subtask: T58418: Invalid HTML in Echo notification list pop-up.
Fomafix closed subtask T123242: Special:ComparePages fails HTML validation as Resolved.Jul 4 2017, 5:31 AM
Fomafix added a subtask: T106367: Generate BCP 47 conform language codes for the HTML attribute `lang`.Jul 4 2017, 2:47 PM
Fomafix added a subtask: T167284: Nu Html Checker generates warning because of <link rel="copyright">.
Krinkle closed subtask T167284: Nu Html Checker generates warning because of <link rel="copyright"> as Resolved.Jul 11 2017, 4:24 AM
matmarex closed subtask T169551: Nu Html Checker generates error because of <div> inside of <h3> as Resolved.Jul 12 2017, 9:44 PM
Fomafix added a subtask: T171423: Nu Html Checker generates error because of <div> inside of <span>.Jul 24 2017, 5:28 AM
Fomafix closed subtask T171423: Nu Html Checker generates error because of <div> inside of <span> as Resolved.Jul 24 2017, 7:56 AM
Fomafix added a subtask: T173375: Special:SkinDistributor fails HTML validation.Aug 15 2017, 2:59 PM
Fomafix closed subtask T173375: Special:SkinDistributor fails HTML validation as Resolved.Aug 29 2017, 7:53 PM
He7d3r added a subtask: T175645: Use CSS to set the width of cells at Special:Newsletters.Oct 28 2017, 6:28 PM
Dinoguy1000 mentioned this in T21719: [DO NOT USE] HTML5 features (tracking) [superseded by #HTML5].Nov 22 2017, 7:04 PM
• IZoid added a subtask: T49578: Score should output SVG.Dec 9 2017, 6:34 PM
Ebe123 removed a subtask: T49578: Score should output SVG.Dec 9 2017, 6:37 PM
Fomafix added a subtask: T18889: Removal of mo language codes.Dec 13 2017, 5:44 AM
Fomafix mentioned this in T18889: Removal of mo language codes.
He7d3r added a subtask: T182968: Timeline extension error messages should not use deprecated tag <tt>.Dec 15 2017, 10:50 AM
He7d3r added a subtask: T182041: Display math generates div inside of paragraph (HTML5 violation).Dec 26 2017, 10:01 AM
divadsn closed subtask T182968: Timeline extension error messages should not use deprecated tag <tt> as Resolved.Dec 28 2017, 8:35 PM
Fomafix added a subtask: T120847: Use BCP 47 conform language codes for the HTML attribute lang.Feb 7 2018, 4:33 PM
He7d3r added a subtask: T192273: Special:WikiSets should use CSS instead of deprecated width attribute.Apr 16 2018, 12:20 PM
Krinkle removed a subtask: T192273: Special:WikiSets should use CSS instead of deprecated width attribute.Apr 20 2018, 4:14 PM
Krinkle removed a subtask: T120847: Use BCP 47 conform language codes for the HTML attribute lang.
Krinkle closed this task as Resolved.May 2 2018, 5:41 PM
Krinkle subscribed.

Per T102492: Replace tracking bug T2209 by new project tag "HTML".

Krinkle removed a project: MediaWiki-Parser.May 2 2018, 5:42 PM
Liuxinyu970226 unsubscribed.May 3 2018, 2:30 PM
Liuxinyu970226 moved this task from Transition suggested to Transition completed / Archived on the Tracking-Neverending board.May 6 2018, 10:58 AM
Liuxinyu970226 renamed this task from HTML validity (tracking) to [DO NOT USE] HTML validity (tracking).May 6 2018, 11:03 AM
Liuxinyu970226 updated the task description. (Show Details)
Liuxinyu970226 updated the task description. (Show Details)
Jdforrester-WMF closed subtask T106367: Generate BCP 47 conform language codes for the HTML attribute `lang` as Resolved.Jul 14 2018, 1:24 AM
Izno closed subtask T46609: Stop adding xml:lang attributes to HTML5 pages as Resolved.Jul 27 2018, 1:37 PM
Izno removed a subtask: T19486: Parser generates malformed HTML with a list inside a table.Sep 22 2018, 5:41 PM
Izno closed subtask T51337: Well formed XML (tracking) as Declined.Sep 22 2018, 5:55 PM
Fomafix reopened subtask T106367: Generate BCP 47 conform language codes for the HTML attribute `lang` as Open.Oct 5 2018, 11:10 AM
Jdforrester-WMF closed subtask T106367: Generate BCP 47 conform language codes for the HTML attribute `lang` as Resolved.Oct 11 2018, 9:10 PM
Liuxinyu970226 mentioned this in T192655: Replace all "tracking" tasks with tags/projects (if unbounded), relabel them to outcome tasks (if bounded), or kill them entirely (if pointless).Oct 13 2018, 3:52 AM
Liuxinyu970226 removed a subtask: T2212: Some MediaWiki: messages not safe in HTML (tracking).Mar 16 2019, 1:44 PM
Catrope closed subtask T58418: Invalid HTML in Echo notification list pop-up as Resolved.Mar 21 2019, 7:53 PM
Izno removed a subtask: T43917: Table summary should render HTML5.May 8 2019, 5:43 PM
Izno removed a subtask: T182041: Display math generates div inside of paragraph (HTML5 violation).May 8 2019, 5:54 PM
MaxSem closed subtask T26918: Do not allow #, %, [, ], nbsp in fragment identifiers as Declined.Nov 16 2019, 4:05 AM
Aklapper removed a subtask: T40487: Remove button for <big> from toolbar.Nov 1 2020, 11:35 PM
Krinkle closed subtask T37371: Sidebar generates duplicate IDs as Declined.Jan 19 2021, 12:22 AM
Krinkle closed subtask T42385: HTML validation: Bad value edit for attribute rel on element link: Keyword edit is not registered. as Resolved.Mar 25 2021, 6:21 PM
Izno removed a subtask: T18889: Removal of mo language codes.Jun 15 2021, 2:36 PM
Izno removed a subtask: T75291: Flow: Make our HTML validate.
Izno removed a subtask: T26529: Incrementally remove support for HTML elements removed from or deprecated in HTML5.Jun 15 2021, 2:38 PM
Izno removed a subtask: T9356: User-specified HTML IDs can be the same as interface IDs.
matmarex reopened subtask T58418: Invalid HTML in Echo notification list pop-up as Open.Jun 13 2023, 12:02 AM
Izno removed a subtask: T58418: Invalid HTML in Echo notification list pop-up.Jul 3 2026, 11:40 PM
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