[whatwg] [html5] r5307 - [giow] (0) use vendor--feature instead of _vendor-feature since Apple engineers [...]

[Aryeh Gregor]

On Mon, Aug 30, 2010 at 4:19 AM, Simon Pieters <simonp at opera.com> wrote:
> This change clashes with data-*.

How?  Are you missing the fact that *two* consecutive hyphens are needed?