decompose_blocksub cannot handle REF properly

[Fohlen]

Hello Adrian
Apparently the decompose_blocksub tool does not produce proper VCF's in respect to REF types. You can see this demonstrated here. The filtered.vcf has been produced by processing multiple samples from a control DNA korell with freebayes, breaking them with breakmulti and filtering them. However decompose_blocksub will attempt to break REF fields further, which they should not (a R type should always contain 2 elements).

Further it will throw an exception on MISSING samples, which might or might not be desired behaviour depending on your implementation.

Thanks a lot.
Fohlen