Merging upstream version 1.5~pre1.

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

3 files changed, 62 insertions, 42 deletions

diff --git a/doc/clzip.1 b/doc/clzip.1
index 02181a7..4fc2a26 100644
--- a/doc/clzip.1
+++ b/doc/clzip.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.37.1.
-.TH CLZIP "1" "February 2013" "Clzip 1.4" "User Commands"
+.TH CLZIP "1" "May 2013" "Clzip 1.5-pre1" "User Commands"
 .SH NAME
 Clzip \- reduces the size of files
 .SH SYNOPSIS
@@ -71,6 +71,11 @@ 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 \fB\-\-match\-length\fR and \fB\-\-dictionary\-size\fR
 options directly to achieve optimal performance.
+.PP
+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 clzip to panic.
 .SH "REPORTING BUGS"
 Report bugs to lzip\-bug@nongnu.org
 .br
diff --git a/doc/clzip.info b/doc/clzip.info
index ccec058..41723f3 100644
--- a/doc/clzip.info
+++ b/doc/clzip.info
@@ -12,7 +12,7 @@ File: clzip.info,  Node: Top,  Next: Introduction,  Up: (dir)
 Clzip Manual
 ************
 
-This manual is for Clzip (version 1.4, 18 February 2013).
+This manual is for Clzip (version 1.5-pre1, 13 May 2013).
 
 * Menu:
 
@@ -42,6 +42,10 @@ gzip or bzip2. Clzip decompresses almost as fast as gzip and compresses
 better than bzip2, which makes it well suited for software distribution
 and data archiving.
 
+   Clzip uses the same well-defined exit status values used by bzip2,
+which makes it safer when used in pipes or scripts than compressors
+returning ambiguous warning values, like gzip.
+
    Clzip uses the lzip file format; the files produced by clzip are
 fully compatible with lzip-1.4 or newer. Clzip is in fact a C language
 version of lzip, intended for embedded devices or systems lacking a C++
@@ -96,20 +100,16 @@ filename.tlz   becomes   filename.tar
 anyothername   becomes   anyothername.out
 
    As a self-check for your protection, clzip 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 clzip (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.
-
-   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 clzip to panic.
+trailer 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 clzip (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.
 
 
 File: clzip.info,  Node: Algorithm,  Next: Invoking Clzip,  Prev: Introduction,  Up: Top
@@ -326,6 +326,12 @@ E        exabyte   (10^18)         |   Ei       exbibyte (2^60)
 Z        zettabyte (10^21)         |   Zi       zebibyte (2^70)
 Y        yottabyte (10^24)         |   Yi       yobibyte (2^80)
 
+
+   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 clzip to panic.
+
 
 File: clzip.info,  Node: File Format,  Next: Examples,  Prev: Invoking Clzip,  Up: Top
 
@@ -378,6 +384,7 @@ additional information before, between, or after them.
      Bits 4-0 contain the base 2 logarithm of the base size (12 to 29).
      Bits 7-5 contain the number of wedges (0 to 7) to substract from
      the base size to obtain the dictionary size.
+     Example: 0xD3 = (2^19 - 6 * 2^15) = (512KiB - 6 * 32KiB) = 320KiB
      Valid values for dictionary size range from 4KiB to 512MiB.
 
 `Lzma stream'
@@ -392,8 +399,9 @@ additional information before, between, or after them.
 
 `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.
+     acts as a distributed index, allows the verification of stream
+     integrity, and facilitates safe recovery of undamaged members from
+     multi-member files.
 
 
 
@@ -509,12 +517,12 @@ Concept Index
 Tag Table:
 Node: Top226
 Node: Introduction920
-Node: Algorithm4755
-Node: Invoking Clzip7279
-Node: File Format12551
-Node: Examples14860
-Node: Problems16821
-Node: Concept Index17347
+Node: Algorithm4811
+Node: Invoking Clzip7335
+Node: File Format12847
+Node: Examples15277
+Node: Problems17238
+Node: Concept Index17764
 
 End Tag Table
 
diff --git a/doc/clzip.texinfo b/doc/clzip.texinfo
index 1d0479f..e372d60 100644
--- a/doc/clzip.texinfo
+++ b/doc/clzip.texinfo
@@ -6,8 +6,8 @@
 @finalout
 @c %**end of header
 
-@set UPDATED 18 February 2013
-@set VERSION 1.4
+@set UPDATED 13 May 2013
+@set VERSION 1.5-pre1
 
 @dircategory Data Compression
 @direntry
@@ -61,6 +61,10 @@ gzip or bzip2. Clzip decompresses almost as fast as gzip and compresses
 better than bzip2, which makes it well suited for software distribution
 and data archiving.
 
+Clzip uses the same well-defined exit status values used by bzip2, which
+makes it safer when used in pipes or scripts than compressors returning
+ambiguous warning values, like gzip.
+
 Clzip uses the lzip file format; the files produced by clzip are fully
 compatible with lzip-1.4 or newer. Clzip is in fact a C language version
 of lzip, intended for embedded devices or systems lacking a C++
@@ -117,20 +121,16 @@ file from that of the compressed file as follows:
 @end multitable
 
 As a self-check for your protection, clzip 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 clzip (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.
-
-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 clzip to panic.
+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 clzip (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.
 
 
 @node Algorithm
@@ -349,6 +349,12 @@ 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 clzip to panic.
+
 
 @node File Format
 @chapter File Format
@@ -404,6 +410,7 @@ wedges between 0 and 7. The size of a wedge is (base_size / 16).@*
 Bits 4-0 contain the base 2 logarithm of the base size (12 to 29).@*
 Bits 7-5 contain the number of wedges (0 to 7) to substract from the
 base size to obtain the dictionary size.@*
+Example: 0xD3 = (2^19 - 6 * 2^15) = (512KiB - 6 * 32KiB) = 320KiB@*
 Valid values for dictionary size range from 4KiB to 512MiB.
 
 @item Lzma stream
@@ -418,8 +425,8 @@ 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