xz-compressed release tarballs?

[Mike Frysinger]

On Thursday 26 January 2012 16:30:39 Eli Zaretskii wrote:
> > Previous proposal by me:
> > 	xz for the new release tip
> > 	http://sourceware.org/ml/gdb/2009-09/msg00341.html
> 
> Please think a little about those who don't necessarily have a tar
> that knows about xz.  The world doesn't end with GNU/Linux.

why does tar have to know about xz ?  stdin hasn't suddenly stopped working.
	xzcat foo.tar.xz | tar xf -
-mike
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