Re: Features and fixes incompatible with backward compatibility

On 2/19/12 3:15 PM, Robert O'Callahan wrote:
> On Mon, Feb 20, 2012 at 8:32 AM, Boris Zbarsky <bzbarsky@mit.edu 
> <mailto:bzbarsky@mit.edu>> wrote:
>
>     Then again, I don't think "everyone" thinks that the way physical
>     units work right now is worse than the alternative, fwiw.
>
>
> I think that's me :-).
>
> The units we have now are far more useful than "true physical" units 
> would have been, since "true physical" units are mostly useless for 
> Web pages across the range of devices we need to deal with.
>
> Maybe if we had only "px" and "truemm" (with the latter very rarely 
> used), things would be better because I'd be less frequently accused 
> of destroying the metric system :-).

Can we deprecate those others? They really are just a relic.

I'd like em, px and truemm.

The others can just be marked obsolete, and maintained for 
compatibility, as things often are.