bin/47560: tar 'z' option gzip'd output has extra garbage

[Tim Kientzle]

The following reply was made to PR bin/47560; it has been noted by GNATS.

From: Tim Kientzle <tim at kientzle.com>
To: freebsd-gnats-submit at FreeBSD.org, archie at packetdesign.com
Cc:  
Subject: Re: bin/47560: tar 'z' option gzip'd output has extra garbage
Date: Sun, 04 Apr 2004 10:45:45 -0700

 This behavior is by design.
 
 Archives written to tape, floppy, or other block devices
 must be padded to a full block size.  In the case
 of stdout, tar cannot know the final destination, so
 it conservatively assumes the padding is necessary.
 
 When writing directly to a regular file
 
    tar cvzf file.tgz
 
 the padding is not added, as tar can correctly
 determine that it is not necessary.
 
 My 'bsdtar' implementation behaves the same way
 for the same reasons.