On 2014-10-12 23:50:16 [+0200], Kevin Price wrote:
> 
> xz does not understand sparse files, but compresses arbritary amounts of
> 0x00's instead. Currently, tar could serve as a workaround.

The `tar' format has support for sparse files. xz on the other hand does
not. Adding sparse support would change file format and so break support
with older versions. This is a special case here.

BZ2 has a RLE pass which should support the repetitive zero case (and my
guess is that bz2 creates a smaller file here). Overall this RLE pass is
considered as a burden.

I suggest this to close this as there is not much that can be done.

> -- 
> Kevin Price
> http://www.kevin-price.de/

Sebastian

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