[Lzip-bug] Plzip 1.7-rc1 released

[Antonio Diaz Diaz]

Plzip 1.7-rc1 is ready for testing here
http://download.savannah.gnu.org/releases/lzip/plzip/plzip-1.7-rc1.tar.lz
http://download.savannah.gnu.org/releases/lzip/plzip/plzip-1.7-rc1.tar.gz

The sha256sums are:
8904f707b9220920eb975034485c7ed5d04a57d003bbe5532a82b9d9a7c7e3c5 
plzip-1.7-rc1.tar.lz
297ed48e4fc06295f3732fc9745099bf1d8ae4ae8b2528e05ddd0ad0b64a9ac2 
plzip-1.7-rc1.tar.gz

Please, test it and report any bugs you find.

Plzip is a massively parallel (multi-threaded) lossless data compressor 
based on the lzlib compression library, with a user interface similar to 
the one of lzip, bzip2 or gzip.

Plzip can compress/decompress large files on multiprocessor machines 
much faster than lzip, at the cost of a slightly reduced compression 
ratio (0.4 to 2 percent larger compressed files). Note that the number 
of usable threads is limited by file size; on files larger than a few GB 
plzip can use hundreds of processors, but on files of only a few MB 
plzip is no faster than lzip.

Plzip uses the lzip file format; the files produced by plzip are fully 
compatible with lzip-1.4 or newer, and can be rescued with lziprecover.

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

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

Changes in this version:

  * When compressing on a 32 bit system, plzip now tries to limit the 
memory use to under 3 GiB by reducing the number of threads below the 
system's default.

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

  * The test used by plzip to discriminate trailing data from a corrupt 
header in multimember regular (seekable) 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.
Lzlib 1.10-rc1 or newer is required for this test to work on 
non-seekable files.
Lziprecover can be used to remove conflicting trailing data from a file.

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

  * The progress of decompression is now shown at verbosity level 2 
(-vv) or higher.

  * Progress of (de)compression is only shown if stderr is a terminal.

  * A second '.lz' extension is no longer added to the argument of '-o' 
if it already ends in '.lz' or '.tlz'.

  * The dictionary size is now shown at verbosity level 4 (-vvvv) when 
decompressing or testing.

  * The new chapter "Meaning of plzip's output" has been added to the 
manual.


Regards,
Antonio Diaz, plzip co-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