[Webkit-unassigned] [Bug 184027] New: Allow mathematical expressions in image sizes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=184027

            Bug ID: 184027
           Summary: Allow mathematical expressions in image sizes
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: musgravejw at gmail.com
                CC: cdumez at apple.com

Currently `calc()` is supported as a CSS mathematical function. The CSS Values and Units Level 4 Specification describes a list of math functions [1] consisting of `calc()` in addition to `min()` and `max()`.  Suggest implementing recent specification changes.

The motivation for opening this bug is the reference to the aforementioned mathematical functions in the HTML Standard [2], which supports the appearance of mathematical functions in the `sizes` attribute on <img> elements.

[1]: https://drafts.csswg.org/css-values/#math-function
[2]: https://github.com/whatwg/html/pull/3084 & https://github.com/w3c/web-platform-tests/pull/10167

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