[Lzip-bug] Lzip 1.20-rc1 released

[Antonio Diaz Diaz]

Lzip 1.20-rc1 is ready for testing here
http://download.savannah.gnu.org/releases/lzip/lzip-1.20-rc1.tar.lz
http://download.savannah.gnu.org/releases/lzip/lzip-1.20-rc1.tar.gz

The sha256sums are:
89f282f9f9060351996c898b9ca2bdd7bcc9c51a6999bfc45b36cf3834cb67ad 
lzip-1.20-rc1.tar.lz
6156a37cd553f4d143f8690bb0322505308632467624d7461fce72865bfe38ea 
lzip-1.20-rc1.tar.gz

Please, test it and report any bugs you find.

Lzip is a lossless data compressor with a user interface similar to the 
one of gzip or bzip2. Lzip can compress about as fast as gzip (lzip -0), 
or compress most files more than bzip2 (lzip -9). Decompression speed is 
intermediate between gzip and bzip2. Lzip is better than gzip and bzip2 
from a data recovery perspective.

The lzip file format is designed for data sharing and long-term 
archiving, taking into account both data integrity and decoder availability:

  * The lzip format provides very safe integrity checking and some data
    recovery means. The lziprecover program can repair bit flip errors
    (one of the most common forms of data corruption) in lzip files,
    and provides data recovery capabilities, including error-checked
    merging of damaged copies of a file.

  * The lzip format is as simple as possible (but not simpler). The
    lzip manual provides the source code of a simple decompressor along
    with a detailed explanation of how it works, so that with the only
    help of the lzip manual it would be possible for a digital
    archaeologist to extract the data from a lzip file long after
    quantum computers eventually render LZMA obsolete.

  * Additionally the lzip reference implementation is copylefted, which
    guarantees that it will remain free forever.

The homepage is at http://www.nongnu.org/lzip/lzip.html

Changes in this version:

  * The option '--loose-trailing', has been added.

  * The test used by lzip to discriminate trailing data from a corrupt 
header in multimember or concatenated files has been improved to a 
Hamming distance (HD) of 3, and the 3 bit flips must happen in different 
magic bytes for the test to fail. As a consequence some kinds of files 
no longer can be appended to a lzip file as trailing data unless the 
'--loose-trailing' option is used when decompressing. Lziprecover can be 
used to remove conflicting trailing data from a file.

  * The contents of a corrupt or truncated header found in a 
multimember file is now shown, after the error message, in the same 
format as trailing data.

  * Option '-S, --volume-size' now keeps input files unchanged.


Regards,
Antonio Diaz, lzip author and maintainer.

--
If you are distributing software in xz format, please consider using 
lzip instead. See 
http://www.nongnu.org/lzip/xz_inadequate.html#fragmented and 
http://www.nongnu.org/lzip/lzip_benchmark.html#xz1