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marquee: Force marquee to have overflow: hidden. #10243

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merged 1 commit into from
Apr 2, 2024
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@emilio emilio commented Apr 2, 2024

This matches Blink and WebKit, and I want to match it in Gecko as part of bug 306344.

(See WHATWG Working Mode: Changes for more details.)


💥 Error: Wattsi server error 💥

PR Preview failed to build. (Last tried on Apr 2, 2024, 4:42 PM UTC).

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PR Preview relies on a number of web services to run. There seems to be an issue with the following one:

🚨 Wattsi Server - Wattsi Server is the web service used to build the WHATWG HTML spec.

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      <!DOCTYPE html>
      <html>
      <head>
          <meta name="viewport" content="width=device-width, initial-scale=1">
          <meta name="robots" content="noindex">
          <style>body,html{height:100%;margin:0}body{display:flex;align-items:center;justify-content:center;flex-direction:column;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}p{text-align:center;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;color:#000;font-size:14px;margin-top:-50px}p.code{font-size:24px;font-weight:500;border-bottom:1px solid #e0e1e2;padding:0 20px 15px}p.text{margin:0}a,a:visited{color:#aaa}</style>
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        Error
      </p>
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        We encountered an error when trying to load your application and your page could not be served. Check the logs for your application in the App Platform dashboard.
      </p>
        <div style="display:none;">
          <h1>
    upstream_reset_before_response_started{connection_termination} (503 UC)      </h1>
          <p data-translate="connection_timed_out">App Platform failed to forward this request to the application.</p>
      </div>
      </body>
      </html>
    

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This matches Blink and WebKit, and I want to match it in Gecko as part
of bug 306344.
@emilio emilio requested review from zcorpan, annevk and mfreed7 April 2, 2024 15:54
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annevk commented Apr 2, 2024

In https://phabricator.services.mozilla.com/D206357 I only see a change to testing/web-platform/tests/html/rendering/non-replaced-elements/form-controls/resets.html where it's not marked as !important. How is that aspect tested then?

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emilio commented Apr 2, 2024

Good point. I'll make sure to cover that.

@annevk annevk merged commit 70f12d7 into whatwg:main Apr 2, 2024
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@emilio emilio deleted the marquee branch April 2, 2024 20:59
zcorpan added a commit that referenced this pull request Apr 4, 2024
zcorpan added a commit that referenced this pull request Apr 5, 2024
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Apr 8, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <d@domenic.me>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Apr 8, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <d@domenic.me>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
moz-wptsync-bot pushed a commit to web-platform-tests/wpt that referenced this pull request Apr 8, 2024
This matches what chromium does, and is both simpler and prettier.

The overflow: hidden enforcement also matches chromium / WebKit via:

  https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/core/css/resolver/style_adjuster.cc;l=482;drc=88c8510c16d44e0dc8c07426db31aa5bb3c90a2b
  https://searchfox.org/wubkat/rev/473ca5f8512b88edd7e82c8783e7e09158f17ba1/Source/WebCore/style/StyleAdjuster.cpp#581-596

See also whatwg/html#10243 and the resets.html
change.

Adding white-space: nowrap isn't strictly necessary, but also matches
other implementations:

  https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/core/html/html_marquee_element.cc;l=66;drc=4aba604f0aae6fb93eab830b68765604e9a2cca0
  (and same link as above on WebKit)

Differential Revision: https://phabricator.services.mozilla.com/D206357

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=306344
gecko-commit: 0506d9964b321a47ffbbdbde6b3321c741322816
gecko-reviewers: smaug, firefox-animation-reviewers, boris
moz-v2v-gh pushed a commit to mozilla/gecko-dev that referenced this pull request Apr 9, 2024
moz-wptsync-bot pushed a commit to web-platform-tests/wpt that referenced this pull request Apr 9, 2024
This matches what chromium does, and is both simpler and prettier.

The overflow: hidden enforcement also matches chromium / WebKit via:

  https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/core/css/resolver/style_adjuster.cc;l=482;drc=88c8510c16d44e0dc8c07426db31aa5bb3c90a2b
  https://searchfox.org/wubkat/rev/473ca5f8512b88edd7e82c8783e7e09158f17ba1/Source/WebCore/style/StyleAdjuster.cpp#581-596

See also whatwg/html#10243 and the resets.html
change.

Adding white-space: nowrap isn't strictly necessary, but also matches
other implementations:

  https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/core/html/html_marquee_element.cc;l=66;drc=4aba604f0aae6fb93eab830b68765604e9a2cca0
  (and same link as above on WebKit)

Differential Revision: https://phabricator.services.mozilla.com/D206357

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=306344
gecko-commit: c5dcab43fa407e2d919a8f79ed4403447c391cbd
gecko-reviewers: smaug, firefox-animation-reviewers, boris
moz-v2v-gh pushed a commit to mozilla/gecko-dev that referenced this pull request Apr 9, 2024
moz-wptsync-bot pushed a commit to web-platform-tests/wpt that referenced this pull request Apr 9, 2024
This matches what chromium does, and is both simpler and prettier.

The overflow: hidden enforcement also matches chromium / WebKit via:

  https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/core/css/resolver/style_adjuster.cc;l=482;drc=88c8510c16d44e0dc8c07426db31aa5bb3c90a2b
  https://searchfox.org/wubkat/rev/473ca5f8512b88edd7e82c8783e7e09158f17ba1/Source/WebCore/style/StyleAdjuster.cpp#581-596

See also whatwg/html#10243 and the resets.html
change.

Adding white-space: nowrap isn't strictly necessary, but also matches
other implementations:

  https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/core/html/html_marquee_element.cc;l=66;drc=4aba604f0aae6fb93eab830b68765604e9a2cca0
  (and same link as above on WebKit)

Differential Revision: https://phabricator.services.mozilla.com/D206357

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=306344
gecko-commit: c5dcab43fa407e2d919a8f79ed4403447c391cbd
gecko-reviewers: smaug, firefox-animation-reviewers, boris
ErichDonGubler pushed a commit to erichdongubler-mozilla/firefox that referenced this pull request Apr 15, 2024
ErichDonGubler pushed a commit to erichdongubler-mozilla/firefox that referenced this pull request Apr 15, 2024
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request May 13, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <d@domenic.me>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request May 20, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <d@domenic.me>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Jun 17, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <d@domenic.me>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Jun 25, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <d@domenic.me>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Aug 20, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <d@domenic.me>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Aug 27, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <d@domenic.me>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
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