Re: [css-shapes][css-images] Ellipse syntax(es) with a single radius

On Sat, Dec 5, 2015 at 10:18 AM, Alan Stearns <stearns@adobe.com> wrote:
> In a bug [1], it’s noted that the ellipse() function is defined to only accept 0 or 2 radius values. If one radius is provided, it’s an invalid shape function. Tab suggested in the bug that we allow a 1-radius ellipse, and just set the second radius to the same as the first.
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> As I recall [2], I defined the ellipse function to match what we have in radial-gradient(), where if an ellipse ending-shape is explicitly used, you can only use 0 or 2 radius values.
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> I don’t much care whether we allow one-radius ellipse syntax or not, but if we do I think we should also change radial-gradient() to match. I don’t think it’s terribly useful to have a one-radius ellipse that devolves to a circle, though. So I’m slightly inclined against the change because I don’t think the limited use warrants mucking around with gradients.

Check radial-gradient() again - it requires 0 or 2 *length/percentage*
values, or 1 keyword.  You have ellipse() accepting 0 or 2 keywords
(along with 0 or 2 len/%).  You're not currently matching
radial-gradient() at all. ^_^

~TJ