Weekly github digest (HTML specs)

Issues
------
* w3c/html-aam (+0/-1/💬3)
  3 issues received 3 new comments:
  - #607 Simplify aside mappings (1 by css-meeting-bot)
    https://github.com/w3c/html-aam/issues/607 [Agenda] 
  - #604 li as listitem outside list element (1 by rahimabdi)
    https://github.com/w3c/html-aam/issues/604 
  - #601 New controls attribute for img element (1 by rahimabdi)
    https://github.com/w3c/html-aam/issues/601 [Attribute Mappings] 

  1 issues closed:
  - li as listitem outside list element https://github.com/w3c/html-aam/issues/604 

* w3c/webcomponents (+0/-0/💬3)
  2 issues received 3 new comments:
  - #1111 Reference Target "phase 2": seeking feedback and use cases (1 by Rajdeepc)
    https://github.com/WICG/webcomponents/issues/1111 
  - #1098 Reference Target: How to handle events fired on the reference target by related elements? (2 by annevk, dandclark)
    https://github.com/WICG/webcomponents/issues/1098 

* whatwg/html (+13/-6/💬75)
  13 issues created:
  - Upcoming WHATNOT meeting on 2026-06-04 (by jstenback)
    https://github.com/whatwg/html/issues/12510 [agenda+] 
  - Customizable Select: Updating selected option's content does not clone into selectedcontent (by jnjaeschke)
    https://github.com/whatwg/html/issues/12509 [topic: select] 
  - save lines for browsers (by blueskyusf-code)
    https://github.com/whatwg/html/issues/12507 
  - [canvas] How are context dependent values resolved in canvas colors (by Calme1709)
    https://github.com/whatwg/html/issues/12505 [topic: canvas] 
  - Meeting 44 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls (by mfreed7)
    https://github.com/whatwg/html/issues/12503 
  - frameset/frame style adjustments should be defined in HTML UA stylesheet (by nt1m)
    https://github.com/whatwg/html/issues/12501 [topic: rendering] [interop] [topic: frames/navigables/browsing contexts] 
  - Inconsistent cross-browser behavior for mutating child <source>s of a <video> (by nicolo-ribaudo)
    https://github.com/whatwg/html/issues/12500 [topic: media] 
  - Proposal: Native include attribute for declarative HTML component composition (by tanvirsajibbd-oss)
    https://github.com/whatwg/html/issues/12499 [addition/proposal] [needs implementer interest] 
  - Make it possible to render `details` inline (by locrianz)
    https://github.com/whatwg/html/issues/12498 [addition/proposal] [needs implementer interest] 
  - Make focused area preservation across bfcache reactivation normative (by hjanuschka)
    https://github.com/whatwg/html/issues/12496 
  - Explicitly discuss the adjusted insertion location being a descendant of the node itself (by hsivonen)
    https://github.com/whatwg/html/issues/12494 [topic: parser] 
  - In-flight `MessagePort` behavior (by francovs)
    https://github.com/whatwg/html/issues/12490 
  - Relaxing the "`legend` must be the first child of `fieldset`" requirement (by patrickhlauke)
    https://github.com/whatwg/html/issues/12485 [document conformance] [topic: fieldset] 

  29 issues received 75 new comments:
  - #12509 Customizable Select: Updating selected option's content does not clone into selectedcontent (4 by annevk, emilio)
    https://github.com/whatwg/html/issues/12509 [topic: select] 
  - #12507 save lines for browsers (2 by annevk, blueskyusf-code)
    https://github.com/whatwg/html/issues/12507 
  - #12505 [canvas] How are context dependent values resolved in canvas colors (4 by Calme1709, Kaiido, SaffronDuke, patrron)
    https://github.com/whatwg/html/issues/12505 [topic: canvas] 
  - #12503 Meeting 44 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls (3 by annevk, mfreed7)
    https://github.com/whatwg/html/issues/12503 
  - #12501 frameset/frame style adjustments should be defined in HTML UA stylesheet (3 by josepharhar, nt1m)
    https://github.com/whatwg/html/issues/12501 [topic: rendering] [interop] [topic: frames/navigables/browsing contexts] 
  - #12500 Inconsistent cross-browser behavior for mutating child <source>s of a <video> (3 by andreubotella, nicolo-ribaudo)
    https://github.com/whatwg/html/issues/12500 [topic: media] 
  - #12498 Make it possible to render `details` inline (1 by annevk)
    https://github.com/whatwg/html/issues/12498 [addition/proposal] [needs implementer interest] 
  - #12494 Explicitly discuss the adjusted insertion location being a descendant of the node itself (1 by zcorpan)
    https://github.com/whatwg/html/issues/12494 [topic: parser] 
  - #12485 Relaxing the "`legend` must be the first child of `fieldset`" requirement (8 by annevk, patrickhlauke, zcorpan)
    https://github.com/whatwg/html/issues/12485 [document conformance] [topic: fieldset] 
  - #12479 <textarea> tag reflecting indentation tabs in textarea box. (1 by sc1-moo)
    https://github.com/whatwg/html/issues/12479 
  - #12476 Upcoming WHATNOT meeting on 2026-05-28 (4 by jstenback, scottjehl, thejohnjansen)
    https://github.com/whatwg/html/issues/12476 [agenda+] 
  - #12474 Properly define <select><button> semantics (3 by annevk, josepharhar, keithamus)
    https://github.com/whatwg/html/issues/12474 [topic: rendering] [needs tests] [topic: select] 
  - #12455 Meeting 43 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls (1 by mfreed7)
    https://github.com/whatwg/html/issues/12455 
  - #12445 Request for feedback: user activation design in Attribution (1 by smaug----)
    https://github.com/whatwg/html/issues/12445 [integration] [topic: user activation] 
  - #12378 cachehint attribute of <script> for inline script caching (3 by annevk, hiroshige-g, keithamus)
    https://github.com/whatwg/html/issues/12378 [topic: script] 
  - #12342 Selectedcontent in select multiple (2 by fantasai, lukewarlow)
    https://github.com/whatwg/html/issues/12342 [addition/proposal] [needs implementer interest] [agenda+] [topic: select] 
  - #12274 Passing the scoped custom element registry to the fragment parser has non-obvious side effects (1 by keithamus)
    https://github.com/whatwg/html/issues/12274 [topic: custom elements] [agenda+] 
  - #11729 Menu elements proposal (1 by dbaron)
    https://github.com/whatwg/html/issues/11729 [addition/proposal] [needs implementer interest] [agenda+] [stage: 1] 
  - #11665 Allow out-of-band text tracks to source kind, label, language from the text track format (1 by cookiecrook)
    https://github.com/whatwg/html/issues/11665 [addition/proposal] [topic: media] 
  - #11478 OpaqueRange Interface (8 by annevk, keithamus, stephanieyzhang)
    https://github.com/whatwg/html/issues/11478 [addition/proposal] [agenda+] [stage: 2] 
  - #10988 The topmost popover ancestor algorithm is used for manual popovers (1 by jakearchibald)
    https://github.com/whatwg/html/issues/10988 [topic: popover] 
  - #10911 Specify the ability to scroll to increase/decrease <input type=number> (1 by kirk-loretz-fsn)
    https://github.com/whatwg/html/issues/10911 [topic: forms] 
  - #10831 Detect UA transitions on same-origin cross-document navigations (1 by leifniem)
    https://github.com/whatwg/html/issues/10831 [addition/proposal] [needs implementer interest] 
  - #10650 HTML-in-Canvas (2 by foolip)
    https://github.com/whatwg/html/issues/10650 [addition/proposal] [needs implementer interest] [topic: canvas] [agenda+] [stage: 2] 
  - #8557 ECMAScript Explicit Resource Management proposal integration with web APIs (1 by linusg)
    https://github.com/whatwg/html/issues/8557 
  - #8492 Avoid firing 'load' or 'error' events for <img> when the loaded image didn't change (1 by shannonbooth)
    https://github.com/whatwg/html/issues/8492 [topic: img] [topic: events] [needs compat analysis] 
  - #8445 No load or error event for <video poster> (1 by hjanuschka)
    https://github.com/whatwg/html/issues/8445 [addition/proposal] [needs implementer interest] [topic: media] 
  - #3748 UA shadow roots are observable via inheritance.  (2 by dbaron, emilio)
    https://github.com/whatwg/html/issues/3748 [topic: shadow] [topic: rendering] 
  - #2368 Mouse events & disabled form controls (10 by josepharhar, saschanaz, waterplea)
    https://github.com/whatwg/html/issues/2368 [topic: forms] [topic: events] [interop] 

  6 issues closed:
  - Upcoming WHATNOT meeting on 2026-05-28 https://github.com/whatwg/html/issues/12476 [agenda+] 
  - save lines for browsers https://github.com/whatwg/html/issues/12507 
  - Meeting 43 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls https://github.com/whatwg/html/issues/12455 
  - The topmost popover ancestor algorithm is used for manual popovers https://github.com/whatwg/html/issues/10988 [topic: popover] 
  - Make it possible to render `details` inline https://github.com/whatwg/html/issues/12498 [addition/proposal] [needs implementer interest] 
  - createImageBitmap's note is wrong https://github.com/whatwg/html/issues/3552 [good first issue] [topic: canvas] 

* whatwg/dom (+1/-0/💬0)
  1 issues created:
  - OpaqueRange: cross-post from whatwg/html#11478 for DOM community input (by stephanieyzhang)
    https://github.com/whatwg/dom/issues/1468 [topic: ranges] 



Pull requests
-------------
* w3c/html-aria (+1/-0/💬0)
  1 pull requests submitted:
  - 598  (by scottaohara)
    https://github.com/w3c/html-aria/pull/598 

* whatwg/html (+10/-0/💬18)
  10 pull requests submitted:
  - 12508  (by jmdyck)
    https://github.com/whatwg/html/pull/12508 
  - 12506  (by emilio)
    https://github.com/whatwg/html/pull/12506 
  - 12504  (by dbaron)
    https://github.com/whatwg/html/pull/12504 
  - 12502  (by nicolo-ribaudo)
    https://github.com/whatwg/html/pull/12502 
  - 12497  (by hjanuschka)
    https://github.com/whatwg/html/pull/12497 
  - 12495  (by noamr)
    https://github.com/whatwg/html/pull/12495 
  - 12493  (by jakearchibald)
    https://github.com/whatwg/html/pull/12493 
  - 12492  (by zcorpan)
    https://github.com/whatwg/html/pull/12492 
  - 12491  (by emilio)
    https://github.com/whatwg/html/pull/12491 
  - 12484  (by annevk)
    https://github.com/whatwg/html/pull/12484 

  12 pull requests received 18 new comments:
  - #12506 Define that <video> and <audio> have a shadow tree with no slots. (1 by emilio)
    https://github.com/whatwg/html/pull/12506 
  - #12504 Make select/option content model clearer about children versus descendants (2 by dbaron, mtrootyy)
    https://github.com/whatwg/html/pull/12504 [topic: select] 
  - #12495 Add `runScripts` to `SetHTMLUnsafeOptions` (1 by noamr)
    https://github.com/whatwg/html/pull/12495 
  - #12493 Ensure "topmost popover ancestor" is only called for auto or hint popovers (1 by jakearchibald)
    https://github.com/whatwg/html/pull/12493 
  - #12492 Specify rate limiter for navigation, history traversal, and pushState/replaceState (2 by farre, zcorpan)
    https://github.com/whatwg/html/pull/12492 [topic: navigation] 
  - #12480 Allow activation of a checked radio button to clear it (1 by Jobayer-cloud1)
    https://github.com/whatwg/html/pull/12480 
  - #12263 Clone into all descendant selectedcontent elements (1 by josepharhar)
    https://github.com/whatwg/html/pull/12263 [topic: select] 
  - #12026 Add document policy to the policy container (2 by annevk, domfarolino)
    https://github.com/whatwg/html/pull/12026 
  - #12011 [Draft] Introduce the new menu elements (1 by mtrootyy)
    https://github.com/whatwg/html/pull/12011 [agenda+] 
  - #11687 Declarative CSS Modules (1 by KurtCattiSchmidt)
    https://github.com/whatwg/html/pull/11687 [agenda+] 
  - #11588 Add HTML-in-Canvas APIs (2 by Kaiido, szager-chromium)
    https://github.com/whatwg/html/pull/11588 
  - #10995 Add reference target (3 by annevk, dandclark)
    https://github.com/whatwg/html/pull/10995 

* whatwg/dom (+3/-0/💬0)
  3 pull requests submitted:
  - 1469  (by annevk)
    https://github.com/whatwg/dom/pull/1469 
  - 1467  (by annevk)
    https://github.com/whatwg/dom/pull/1467 
  - 1466  (by dandclark)
    https://github.com/whatwg/dom/pull/1466 


Repositories tracked by this digest:
-----------------------------------
* https://github.com/w3c/html-aam
* https://github.com/w3c/html-aria
* https://github.com/w3c/html-extensions
* https://github.com/w3c/htmlwg
* https://github.com/w3c/webcomponents
* https://github.com/whatwg/html
* https://github.com/whatwg/dom


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Received on Monday, 1 June 2026 17:00:37 UTC