[Lzip-bug] Lzip 1.18 released

[Antonio Diaz Diaz]

I am pleased to announce the release of lzip 1.18.

Lzip is a lossless data compressor with a user interface similar to the 
one of gzip or bzip2. Lzip is about as fast as gzip, compresses most 
files more than bzip2, and is better than both 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 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

A benchmark can be found at http://www.nongnu.org/lzip/lzip_benchmark.html

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

The sha1sums are:
9961510b53603adc7547f5173754ed3f7f00bdbd  lzip-1.18.tar.lz
ef42f3209d02c3b3c217a61c8f127bcb8747b128  lzip-1.18.tar.gz

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


Changes in version 1.18:

  * The option "-a, --trailing-error", which makes lzip exit with error 
status 2 if any remaining input is detected after decompressing the last 
member, has been added.

  * Decompression time has been reduced by 2%.

  * The test of the value remaining in the range decoder has been 
removed. (After extensive testing it has been found useless to detect 
corruption in the decompressed data. Eliminating it reduces the number 
of false positives for corruption and makes error detection more accurate).

  * When decompressing, the file specified with the '--output' option 
is now deleted if the input is a terminal.

  * Decompression support for version 0 files has been removed.

  * The new chapter "Trailing data" has been added to the manual.

  * A harmless check failure on Windows, caused by the failed 
comparison of a message in text mode, has been fixed.


Please send bug reports and suggestions to address@hidden


Regards,
Antonio Diaz, lzip author and maintainer.