Merging upstream version 1.0.

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 35 insertions, 28 deletions

diff --git a/doc/plzip.texinfo b/doc/plzip.texinfo
index 5e62234..b832884 100644
--- a/doc/plzip.texinfo
+++ b/doc/plzip.texinfo
@@ -6,8 +6,8 @@
 @finalout
 @c %**end of header
 
-@set UPDATED 8 March 2013
-@set VERSION 1.0-rc1
+@set UPDATED 29 May 2013
+@set VERSION 1.0
 
 @dircategory Data Compression
 @direntry
@@ -35,12 +35,12 @@
 This manual is for Plzip (version @value{VERSION}, @value{UPDATED}).
 
 @menu
-* Introduction::          Purpose and features of plzip
-* Program Design::        Internal structure of plzip
-* Invoking Plzip::        Command line interface
-* File Format::           Detailed format of the compressed file
-* Problems::              Reporting bugs
-* Concept Index::         Index of concepts
+* Introduction::           Purpose and features of plzip
+* Program Design::         Internal structure of plzip
+* Invoking Plzip::         Command line interface
+* File Format::            Detailed format of the compressed file
+* Problems::               Reporting bugs
+* Concept Index::          Index of concepts
 @end menu
 
 @sp 1
@@ -57,13 +57,18 @@ to copy, distribute and modify it.
 Plzip is a massively parallel (multi-threaded), lossless data compressor
 based on the lzlib compression library, with very safe integrity
 checking and a user interface similar to the one of bzip2, gzip or 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.
 
 Plzip is intended for faster compression/decompression of big files on
 multiprocessor machines, which makes it specially well suited for
 distribution of big software files and large scale data archiving. On
-files big enough, plzip can use hundreds of processors.
+files big enough (several GB), plzip can use hundreds of processors.
+
+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.
+
+Plzip uses the same well-defined exit status values used by lzip and
+bzip2, which makes it safer when used in pipes or scripts than
+compressors returning ambiguous warning values, like gzip.
 
 Plzip replaces every file given in the command line with a compressed
 version of itself, with the name "original_name.lz". Each compressed
@@ -92,15 +97,16 @@ file from that of the compressed file as follows:
 @end multitable
 
 As a self-check for your protection, plzip stores in the member trailer
-the 32-bit CRC of the original data and the size of the original data,
-to make sure that the decompressed version of the data is identical to
-the original. This guards against corruption of the compressed data, and
-against undetected bugs in plzip (hopefully very unlikely). The chances
-of data corruption going undetected are microscopic, less than one
-chance in 4000 million for each member processed. Be aware, though, that
-the check occurs upon decompression, so it can only tell you that
-something is wrong. It can't help you recover the original uncompressed
-data.
+the 32-bit CRC of the original data, the size of the original data and
+the size of the member. These values, together with the value remaining
+in the range decoder and the end-of-stream marker, provide a very safe 4
+factor integrity checking which guarantees that the decompressed version
+of the data is identical to the original. This guards against corruption
+of the compressed data, and against undetected bugs in plzip (hopefully
+very unlikely). The chances of data corruption going undetected are
+microscopic. Be aware, though, that the check occurs upon decompression,
+so it can only tell you that something is wrong. It can't help you
+recover the original uncompressed data.
 
 WARNING! Even if plzip is bug-free, other causes may result in a corrupt
 compressed file (bugs in the system libraries, memory errors, etc).
@@ -109,11 +115,6 @@ Therefore, if the data you are going to compress is important, give the
 you verify the compressed file with a command like
 @w{@samp{plzip -cd file.lz | cmp file -}}.
 
-Return values: 0 for a normal exit, 1 for environmental problems (file
-not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or
-invalid input file, 3 for an internal consistency error (eg, bug) which
-caused plzip to panic.
-
 
 @node Program Design
 @chapter Program Design
@@ -289,6 +290,12 @@ Table of SI and binary prefixes (unit multipliers):
 @item Y @tab yottabyte (10^24)        @tab | @tab Yi @tab yobibyte (2^80)
 @end multitable
 
+@sp 1
+Exit status: 0 for a normal exit, 1 for environmental problems (file not
+found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or
+invalid input file, 3 for an internal consistency error (eg, bug) which
+caused plzip to panic.
+
 
 @node File Format
 @chapter File Format
@@ -349,7 +356,7 @@ Valid values for dictionary size range from 4KiB to 512MiB.
 
 @item Lzma stream
 The lzma stream, finished by an end of stream marker. Uses default values
-for encoder properties.
+for encoder properties. See the lzip manual for a full description.
 
 @item CRC32 (4 bytes)
 CRC of the uncompressed original data.
@@ -359,8 +366,8 @@ Size of the uncompressed original data.
 
 @item Member size (8 bytes)
 Total size of the member, including header and trailer. This field acts
-as a distributed index, and facilitates safe recovery of undamaged
-members from multi-member files.
+as a distributed index, allows the verification of stream integrity, and
+facilitates safe recovery of undamaged members from multi-member files.
 
 @end table