2026848 - Add preference to disable MathML href on all but `<a>` elements, with deprecation and use counters

Status: RESOLVED FIXED

(Core :: MathML, task)

Description

[Frédéric Wang Nélar]

See https://w3c.github.io/mathml-core/#the-a-element

We do render that element as mrow after bug 1958853.

This bug is about deprecating href on other elements.

Comment 1

[Frédéric Wang Nélar]

https://github.com/w3c/mathml-core/issues/312

Comment 2

[Frédéric Wang Nélar]

Attachment: Bug 2026848 - Update MathML href tests to reflect links are only on <a> tags. r=emilio,eri

In MathML Core, links are only supported on <a> elements.
See https://github.com/w3c/mathml-core/issues/312

Comment 3

[Frédéric Wang Nélar]

Attachment: Bug 2026848 - Add preference to disable MathML href on all but `<a>` elements, with deprecation and use counters. r=emilio,eri,flod

Comment 4

[Frédéric Wang Nélar]

Attachment: Bug 2026848 - Update UI support for MathML links. r=gijs

• XLink href support has been removed:
  https://github.com/w3c/mathml/issues/127
• In the present bug 2026848, href support on all but <a> elements is
  being disabled via the
  mathml.href_link_on_non_anchor_element.disabled runtime preference.
  See https://github.com/w3c/mathml-core/issues/142
• Also make ContextMenuChild.sys.mjs aware of MathML links, so that
  they appear in the context menu (bug 958957).
• MathMLElement is now a thing so use it to handle the MathML case.
  https://github.com/w3c/mathml-core/issues/129
• Also rely on SVGAElement.

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/59d865a4193a
https://hg.mozilla.org/integration/autoland/rev/706153f05cb2
Update MathML href tests to reflect links are only on <a> tags. r=emilio

Comment 6

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/58905 for changes under testing/web-platform/tests

Comment 7

[pstanciu]

https://hg.mozilla.org/mozilla-central/rev/706153f05cb2

Comment 8

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Upstream PR merged by moz-wptsync-bot

Comment 9

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/1e371482e563
https://hg.mozilla.org/integration/autoland/rev/16bc0ed66b3a
Add preference to disable MathML href on all but `<a>` elements, with deprecation and use counters. r=emilio,flod
https://github.com/mozilla-firefox/firefox/commit/5a99e6678a30
https://hg.mozilla.org/integration/autoland/rev/a461d7b4d967
Update UI support for MathML links. r=Gijs

Comment 10

[Frédéric Wang Nélar]

We need to update the documentation here:

• MathML has a new <a> element which behaves like an <mrow> https://w3c.github.io/mathml-core/#the-a-element (it's render as an mrow since bug 1958853)
• The href attribute is deprecated on all MathML elements but <a>.

Comment 11

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/16bc0ed66b3a
https://hg.mozilla.org/mozilla-central/rev/a461d7b4d967

Comment 12

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/16bc0ed66b3a
https://hg.mozilla.org/mozilla-central/rev/a461d7b4d967