1667719 - Add preferences, warnings and telemetry for the scriptminsize and scriptsizemultiplier attributes

Status: RESOLVED FIXED

(Core :: MathML, enhancement)

Description

[Frédéric Wang (:fredw)]

This is to prepare bug 1548471.

Note that the pref won't disable scriptminsize's default effect on cascade.rs's handle_mathml_scriptlevel_if_needed

Comment 1

[Frédéric Wang (:fredw)]

Attachment: request-scriptminsize-scriptsizemultiplier.txt

Comment 2

[Frédéric Wang (:fredw)]

Attachment: Bug 1667719: Add preferences, warnings and telemetry for the scriptminsize and scriptsizemultiplier attributes. r=emilio

These attributes have been removed from MathML Core and their use case
could be handled by other ways:

1. Rely on font.minimum-size.x-math and/or improve CSS math-depth to avoid
   that the font-size due to math-depth change becomes very small.
2. Implement support for the OpenType MATH parameters to customize the
   scaling factor and/or improve math-depth to accept float values, so that
   people can customize the automatic scaling down.

This patch is a tentative to remove these attributes. They will be disabled
under a preference flag on nightly and have warning/telemetry on other
channels. Note that the effect of the default scriptminsize (8pt) is not
disabled from cascade.rs's handle_mathml_scriptlevel_if_needed yet. This
part will require more care (see bug 1548471).

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/77d293ef9571
Add preferences, warnings and telemetry for the scriptminsize and scriptsizemultiplier attributes. r=emilio

Comment 4

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

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/25817 for changes under testing/web-platform/tests

Comment 5

[Bogdan Tara[:bogdan_tara | bogdant]]

https://hg.mozilla.org/mozilla-central/rev/77d293ef9571

Comment 6

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

Upstream PR merged by moz-wptsync-bot

Comment 7

[Megan McCorquodale]

Comment on attachment 9178162 [details]
request-scriptminsize-scriptsizemultiplier.txt

1. Is there or will there be documentation that describes the schema for the ultimate data set in a public, complete, and accurate way?
   Yes, this will be documented in the probe dictionary.

2. Is there a control mechanism that allows the user to turn the data collection on and off?
   Yes, users can opt out of telemetry collection.

3. If the request is for permanent data collection, is there someone who will monitor the data over time?
   Not permanent data collection.

4. Using the category system of data types on the Mozilla wiki, what collection type of data do the requested measurements fall under?
   Category 1, technical data.

5. Is the data collection request for default-on or default-off?
   Default on.

6. Does the instrumentation include the addition of any new identifiers?
   No new identifiers.

7. Is the data collection covered by the existing Firefox privacy notice?
   Yes.

8. Does there need to be a check-in in the future to determine whether to renew the data?
   Check in in 6 months.

9. Does the data collection use a third-party collection tool?
   No.

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data-review +