Hi Tom, Tom Trauth wrote:
> Given an xz file, is there a way > to determine which version of the xz format it uses. Something like: > > xz-get-version foo.xz --> foo.xz uses XZ format version 1.0.4 Can you say more about the use case? Would "xz --test" work? The xz file format does not have a version number field --- instead, there are reserved fields in various places. This is convenient for implementation: multiple new features can be developed in parallel without knowing in advance which is going to be adopted first. It is also convenient for interoperability: a decoder supporting one feature and not another does not need to lie via its interpretation of a version number field. Hope that helps, Jonathan
