[Webkit-unassigned] [Bug 203073] New: Inline stylesheet with a non-standard media attribute value is not parsed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=203073

            Bug ID: 203073
           Summary: Inline stylesheet with a non-standard media attribute
                    value is not parsed
           Product: WebKit
           Version: Safari 13
          Hardware: Macintosh
                OS: macOS 10.15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jouni at vaadin.com

The following code works in Chrome and Firefox – a CSSStyleSheet object is printed in the console. In Safari, undefined is printed.


<style media="foobar">
  foo {
    color: red;
  }
</style>


<script>
  console.log(document.styleSheets[0]);
</script>



Using a non-standard media value for the <link> element or for an @import statement works the same in all three browsers, and document.styleSheets contains the parsed stylesheet(s).


<link rel="stylesheet" href="some-stylesheet.css" media="foobar">

<style>
  @import "some-stylesheet.css" foobar;
</style>

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