Please use bzip2, which is the successor of this older bzip version.
This port stays for compatibility reasons.  A discussion of the
advantages of bzip2 over bzip 0.21 is given on the homepage.

In short: bzip2 is faster, more reliable and *patent free*

This program may or may not infringe certain US patents pertaining
to arithmetic coding and to the block-sorting transformation itself.
Opinions differ as to the precise legal status of some of the
algorithms used.  Nevertheless, you should be aware that commercial
use of this program could render you liable to unfriendly legal
action.

[This package contains a DECOMPRESS-ONLY version, bunzip, which
provides less legal problems than the full bzip program.]