[Webkit-unassigned] [Bug 148879] New: SVGColor css custom text format is different from the CSS color custom text format

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=148879

            Bug ID: 148879
           Summary: SVGColor css custom text format is different from the
                    CSS color custom text format
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com

Created attachment 260669
  --> https://bugs.webkit.org/attachment.cgi?id=260669&action=review
test case

Open the attached test case.

Result: The css custom text format of the <div> tag is different from the css custom text format of the SVG <rect> tag.
Expected: Colors should always have the same format.

Notes: The problem is Color::serialized() function uses the hex format if the color is opaque. This function is used by SVGColor::customCSSText(). The CSS color itself does not use this function, but instead CSSPrimitiveValue::formatNumberForCustomCSSText() uses different format and code for the cases CSS_RGBCOLOR and CSS_PARSER_HEXCOLOR. This code seems to be the correct format for colors and it used by non SVG colors.

Also in the header file Color.h, this comment is there 

    // Returns the color serialized according to HTML5
    // - http://www.whatwg.org/specs/web-apps/current-work/#serialization-of-a-color
    WEBCORE_EXPORT String serialized() const;

The above link is broken and I could not find CSS specs for serialization of a color.

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