[Lzip-bug] Version 1.11 of lzip released

[Antonio Diaz Diaz]

I am pleased to announce the release of lzip 1.11.

Lzip is a lossless data compressor based on the LZMA algorithm, with 
very safe integrity checking and a user interface similar to the one of 
gzip or bzip2. Lzip decompresses almost as fast as gzip and compresses 
better than bzip2, which makes it well suited for software distribution 
and data archiving.

Lziprecover is a data recovery tool for lzip compressed files able to 
repair slightly damaged files, recover badly damaged files from two or 
more copies, and extract undamaged members from multi-member files.

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

The sources can be downloaded from 
http://download.savannah.gnu.org/releases/lzip/.

The md5sums are:
ba9d0a705e47bcd2b73145d238aa7b58  lzip-1.11.tar.gz
c263ada1244c3ee99df78d3e27f73e17  lzip-1.11.tar.lz

This release is also GPG signed. You can download the signature by 
appending ".sig" to the URL.

Changes in version 1.11:

  * The option "-0", which produces a compression speed and ratio 
comparable to those of "gzip -9", has been added to lzip.

  * Match length limit set by options -1 to -8 has been reduced to 
extend range of use towards gzip. Lower numbers now compress less but 
faster. (-1 now takes 43% less time for only 20% larger compressed size).

(Note that the bidimensional parameter space of LZMA can't be mapped to 
a linear scale optimal for all files. If your files are large, very 
repetitive, etc, you may need to use the --match-length and 
--dictionary-size options directly to achieve optimal performance).

  * Compression of option -9 has been slightly increased.

  * The option "--merge", which tries to produce a correct file merging 
the good parts of two or more damaged copies, has been added to lziprecover.

(To give you an idea of --merge's possibilities, when merging two copies 
each of them with one damaged area affecting 1 percent of the copy, the 
probability of obtaining a correct file is about 98 percent. With three 
such copies the probability rises to 99.97 percent. For large files with 
small errors, the probability approaches 100 percent even with only two 
copies).

  * The option "--repair", which repairs any 1-byte error in the lzma 
stream of lzip files, has been added to lziprecover.

  * Decompressor has been modified to detect file errors earlier, 
improving efficiency of lziprecover's new repair capability.

  * The option "--force", which forces overwriting of existing output 
files, has been added to lziprecover.

  * The option "--output", which sets the name of the output file, has 
been added to lziprecover.

  * The option "--split", which selects the until now only operation of 
splitting multimember files, has been added to lziprecover.

  * Lziprecover now needs the operation to be specified. Else it warns 
the user and does nothing.

  * A warning about fchown's return value being ignored has been fixed.

  * "lzip -tvvvv" now also shows file compression ratio.

  * Some new examples have been added to the manual, including one 
showing the combined use of GNU ddrescue and lziprecover.


Please send bug reports and suggestions to address@hidden


Regards,
Antonio Diaz, lzip author and maintainer.