RE: mask: luminance or alpha

Maybe not breaking the implementation, but be different from the previous default.
Why would there be 2 different defaults for the old mask and the new id-less one?

From: Dirk Schulze
Sent: Monday, July 30, 2012 4:23 PM
To: Rik Cabanier
Cc: www-svg@w3.org
Subject: Re: mask: luminance or alpha

How can it break backwards compatibility if it is not specified in the current specification? :P

Dirk

On Jul 30, 2012, at 4:15 PM, "Rik Cabanier" <cabanier@adobe.com<mailto:cabanier@adobe.com>> wrote:
All,

Last week, there was a decision to have the id-less mask have ‘alpha’ as the default instead of ‘luminance’
Can someone explain the rational for doing this again?
It changes existing default behavior, is not what people want or what products like Illustrator and InkScape currently support.

Rik