[Webkit-unassigned] [Bug 258948] New: Multiple keywords for tech()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258948

            Bug ID: 258948
           Summary: Multiple keywords for tech()
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: macOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: oliverwilliams345 at gmail.com

The following code works correctly in Safari and loads an OpenType-SVG font:

    @font-face {
            font-family: "ComicColor";
            src: url("ComicColor-SVG.woff2") format(woff2) tech(color-SVG);
        }

However, the following code should load the OpenType-SVG font in Safari but instead it loads the COLRv1 font (which Safari does not support). 

        @font-face {
            font-family: "ComicColor";
            src: url("ComicColor-COLRv1.woff2") format(woff2) tech(variations, color-COLRv1),
                 url("ComicColor-SVG.woff2") format(woff2) tech(color-SVG);
        }


>From reading the spec, it seems that tech() is meant to accept a comma-seperated list of values. Is it this that is confusing Safari and getting it to load the wrong font? When I only use one value for tech() things work as they should: 

        @font-face {
            font-family: "ComicColor";
            src: url("ComicColor-COLRv1.woff2") format(woff2) tech(color-COLRv1),
                 url("ComicColor-SVG.woff2") format(woff2) tech(color-SVG);
        }

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