[Lzip-bug] Lzlib 1.10-rc1 released

[Antonio Diaz Diaz]

Lzlib 1.10-rc1 is ready for testing here
http://download.savannah.gnu.org/releases/lzip/lzlib/lzlib-1.10-rc1.tar.lz
http://download.savannah.gnu.org/releases/lzip/lzlib/lzlib-1.10-rc1.tar.gz

The sha256sums are:
370b58528c93af52ef5116873fd1194982be66b70cfff3bfb339fc14ea5a4b2d 
lzlib-1.10-rc1.tar.lz
f57a4fb7ad2ec1c4f504989bfeb8785bc1f865887cce9f48389330f2156fc2f9 
lzlib-1.10-rc1.tar.gz

Please, test it and report any bugs you find.

Lzlib is a data compression library providing in-memory LZMA compression 
and decompression functions, including integrity checking of the 
decompressed data. The compressed data format used by the library is the 
lzip format. Lzlib is written in C.

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/lzlib.html


Changes in this version:

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

  * The test used by lzlib 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, lzlib now returns a 
data error when some kinds of files are appended to a lzip file as 
trailing data. The '--loose-trailing' option of minilzip can be used to 
ignore such trailing data when decompressing.
Lziprecover can be used to remove conflicting trailing data from a file.

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

  * The 'bits/byte' ratio has been replaced with the inverse 
compression ratio in the output of minilzip.

  * minilzip now shows a final diagnostic at verbosity level 1 (-v) or 
higher if any file fails the test when testing multiple files.

  * minilzip no longer adds a second '.lz' extension to the argument of 
'-o' if it already ends in '.lz' or '.tlz'.

  * minilzip now shows the dictionary size at verbosity level 4 (-vvvv) 
when decompressing or testing.

  * The new chapter 'Invoking minilzip' has been added to the manual.


Regards,
Antonio Diaz, lzlib author and maintainer.

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