1484928 - <img style="content: url()"> is not really interoperable

Status: RESOLVED DUPLICATE of bug 1742411

(Core :: Layout, defect, P3)

Description

[Emilio Cobos Álvarez (:emilio)]

I filed https://github.com/w3c/csswg-drafts/issues/2831 when implementing, behavior in WebKit and Blink is really broken, but at least one website does rely on that (https://webcompat.com/issues/17813).

Comment 1

[Karl Dubost💡 :karlcow]

Do you know what Edge is doing currently on these tests?
http://la-grange.net/2018/07/31/content/

Comment 2

[Emilio Cobos Álvarez (:emilio)]

(In reply to Karl Dubost :karlcow from comment #1)
> Do you know what Edge is doing currently on these tests?
> http://la-grange.net/2018/07/31/content/

Edge doesn't support content: url() on elements.

Comment 3

[Karl Dubost💡 :karlcow]

We got another case of this type of issue.

data:text/html,<img style="content: url(https://www.w3.org/2008/site/images/logo-w3c-mobile-lg)" src="https://www.w3.org/2008/site/images/theme-xml.gif">

Comment 4

[Karl Dubost💡 :karlcow]

Emilio, How hard would it be to add telemetry on img src + content url

Comment 5

[Emilio Cobos Álvarez (:emilio)]

(Easy enough)

Comment 6

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1484928 - Add an use counter for when people mix content: url() and <img src>. r=#layout-reviewers

Comment 7

[Emilio Cobos Álvarez (:emilio)]

Attachment: data-r.md

(I'd swear I did this but apparently I didn't)

Comment 8

[Chris H-C :chutten]

Comment on attachment 9180844 [details]
data-r.md

DATA COLLECTION REVIEW RESPONSE:

Is there or will there be documentation that describes the schema for the ultimate data set available publicly, complete and accurate?

Yes.

Is there a control mechanism that allows the user to turn the data collection on and off?

Yes. This collection is Telemetry so can be controlled through Firefox's Preferences.

If the request is for permanent data collection, is there someone who will monitor the data over time?

Yes, Emilio is responsible.

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.

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

Default on for all channels.

Does the instrumentation include the addition of any new identifiers?

No.

Is the data collection covered by the existing Firefox privacy notice?

Yes.

Does there need to be a check-in in the future to determine whether to renew the data?

No. This collection is permanent.

---

Result: datareview+

Comment 9

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/2127a58b2f0d
Add an use counter for when people mix content: url() and <img src>. r=heycam

Comment 10

[Andreea Pavel [:apavel]]

https://hg.mozilla.org/mozilla-central/rev/2127a58b2f0d

Comment 11

[Karl Dubost💡 :karlcow]

https://georgf.github.io/usecounters/#kind=page&group=CONTENTURLONIMAGECONTENT&channel=nightly
So far 0.027% for nightly 84

Comment 12

[Sean Voisen (:svoisen)]

Tracking as a reminder to keep paying attention to the telemetry :)

Comment 15

[BugBot [:suhaib / :marco/ :calixte]]

The leave-open keyword is there and there is no activity for 6 months.
:emilio, maybe it's time to close this bug?
For more information, please visit auto_nag documentation.

Comment 16

[BugBot [:suhaib / :marco/ :calixte]]

The severity field for this bug is relatively low, S3. However, the bug has 6 See Also bugs.
:emilio, could you consider increasing the bug severity?

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