[csswg-drafts] [css-images-4] multiple <image-set-option> with the same resolution

• From: Jonathan Neal via GitHub <sysbot+gh@w3.org>
• Date: Mon, 07 May 2018 16:45:07 +0000
• To: public-css-archive@w3.org
• Message-ID: <issues.opened-320874437-1525711506-sysbot+gh@w3.org>

jonathantneal has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-images-4] multiple <image-set-option> with the same resolution ==
The specification describes a scenario where `image-set()` functions are invalidated.

> Every `<image-set-option>` in a given `image-set()` must have a different `<resolution>`, or else the function is invalid.
— https://drafts.csswg.org/css-images-4/#image-set-notation

This does not seem to reflect existing implementations. Neither Safari or Chrome fail to display an image in the following scenario:

```
html {
 background-image: -webkit-image-set(
  url(https://cloudfour.com/examples/image-set/assets/test.png) 1x,
  url(https://cloudfour.com/examples/image-set/assets/test-hires.png) 1x
 );
}
```

Both will use the last applicable `<image>`. Should this be reflected in the specification, or should we file browser bugs?

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/2652 using your GitHub account

Received on Monday, 7 May 2018 16:45:14 UTC