[Webkit-unassigned] [Bug 78980] SVG error parsing empty path

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=78980





--- Comment #3 from Joe Thomas <joethomas at motorola.com>  2012-02-23 13:11:30 PST ---
(In reply to comment #2)
> Overall this change looks good to me, though I think there may be a corner case dealing with animated paths that you may want to consider:
> <path d="M700,200 h-150 a150,150 0 1,0 150,-150 z" fill="red" stroke="blue" stroke-width="5">
> <animate attributeName="d" from="" to="" dur="1s" repeatCount="indefinite" />
> </path>
> 
> In this example I think the path should become disabled, but I think an argument could be made the other way. FWIW, Firefox does disable the path in this case but we don't.

I feel that webkit behavior is correct. If 'from' and 'to' values are empty, we should respect the 'path data' value in "path" element for better UX.

FYI, If I apply animation to 'opacity' with 'from' and 'to' empty, then firefox respects the opacity attribute value mentioned in the path element.

<path d="M500,200 h-150 a150,150 0 1,0 150,-150  z" opacity=".5" fill="red" stroke="blue" stroke-width="5" >
<animate attributeName="opacity" from="" to="" dur="1s" repeatCount="indefinite" /> </path>

I am not an expert in this area, please correct me if I am wrong. Also, it might be good to handle this corner case in a different bug.

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