block counter bug in 1.13.17

[cc-tec]

Hi all, 

we are not used to your project, just using tar, and think we'd find a little 
bug - or is it a feature? 

We run tar with the -W (verify) -v (verbose) and -R (list blocks with action) 
options. In the verify
section, after rewinding, it announces block numbers continued from the last 
written block. I think this is a bug. Also it has only minor effects it might 
confuse users taking the last block number written for calculation of file 
position in an archive. 

If someone is going to change this, perhaps he might do one other little 
modification, for the above position calc there will be errors because one does 
not know the block the archive ends, only the start of the last file. I'd 
suggest to integrate an output line like 'block xxxxx - end-of-archive'. 

As far as it matters our system: SuSE linux 6.3, GNU tar 1.13.17 used without 
compression, /dev/nst0: Compaq DLT 4000, used with compression.

So far many thanks for your very good work, 

Bernhard Samtleben