LGTM3
/Daniel
On 2023-07-12 17:26, Yoav Weiss wrote:
LGTM2
On Wed, Jul 12, 2023 at 5:21 PM Mike Taylor <miketa...@chromium.org>
wrote:
LGTM1 - seems like an obvious interop win.
On 7/12/23 4:31 AM, Frédéric Wang wrote:
Hello,
This is actually an intent to ship (sorry for sending email with
the wrong title).
To summarize a bit conversations, columnspan/rowspan was
something that was requested by web developers and is used in
existing documents. We cannot just say "use CSS instead" as they
are no equivalent properties.
Initially, we wanted to have this in the initial MathML
implementation but things were postponed because we needed to
decide between "make things more compatible with HTML" (i.e.
colspan/rowspan names) or "make things backward compatible with
MathML3" (i.e. columnspan/rowspan names). Given the latter is
already implemented by Firefox/WebKit and used in existing
documents and tools we decided to go with the latter (Mozilla
also positioned negatively about changing the name).
-------------
Contact emails
fw...@chromium.org
Explainer
None
Specification
https://w3c.github.io/mathml-core/#entry-in-table-or-matrix-mtd
Summary
Implement attributes to specify the number of columns and rows
that a MathML table cell is to span. This is similar to HTML
colspan/rowspan attributes and does not have equivalent CSS
properties.
Blink component
Blink>MathML
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EMathML>
TAG review
None
TAG review status
Not applicable
Risks
Interoperability and Compatibility
/Gecko/: Shipped/Shipping
(https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mtd#browser_compatibility)
Mozilla positioned negatively about renaming
https://github.com/mozilla/standards-positions/issues/74
(Note: this should be
https://github.com/mozilla/standards-positions/issues/743)
/WebKit/: Shipped/Shipping
(https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mtd#browser_compatibility)
/Web developers/: Positive
/Other signals/:
WebView application risks
Does this intent deprecate or change behavior of existing APIs,
such that it has potentially high risk for Android WebView-based
applications?
Debuggability
Will this feature be supported on all six Blink platforms
(Windows, Mac, Linux, Chrome OS, Android, and Android
WebView)?
Yes
Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
Yes
Tests are added in
https://chromium-review.googlesource.com/c/chromium/src/+/4061476
However, advanced parsing such as checking the max limits 1000
and 65534 defined in HTML is a bit tedious as MathML does not
have an IDL for tables yet (
https://github.com/w3c/mathml-core/issues/166#issuecomment-1411721093
<https://github.com/w3c/mathml-core/issues/166#issuecomment-1411721093><https://github.com/w3c/mathml-core/issues/166#issuecomment-1411721093>
) so for now they are written as internal tests.
Flag name on chrome://flags
Finch feature name
Non-finch justification
None
Requires code in //chrome?
False
Estimated milestones
Shipping on desktop 117
Shipping on Android 117
Shipping on WebView 117
Anticipated spec changes
Open questions about a feature may be a source of future web
compat or interop issues. Please list open issues (e.g. links to
known github issues in the project for the feature specification)
whose resolution may introduce web compat/interop risk (e.g.,
changing to naming or structure of the API in a
non-backward-compatible way).
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5157467960377344
Links to previous Intent discussions
Intent to Experiment:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/2603ac64-2367-434f-cee3-42b3d9111639%40igalia.com
This intent message was generated by Chrome Platform Status
<https://chromestatus.com>.
--
Frédéric Wang
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