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This was introduced in
0dd6d007669b946543ca939a44243833c79e08f4 two days ago.
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This is a bit rough but should be useful for basic things.
Ideas (with detailed examples) about the output format are
welcome.
The output of --robot --list is not necessarily stable yet,
although I don't currently have any plans about changing it.
The man page hasn't been updated yet.
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It will be used by --list.
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It is to ensure that floating point numbers
will always have a dot as the decimal separator.
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Thanks to R. Bijker.
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Thanks to Dan Shechter for the patch.
It is likely that windows/Makefile will be removed
completely, because Autotols based build nowadays
works well with both 32-bit and 64-bit MinGW (I
just need to update the docs).
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to a terminal even if --force is specified.
It just seems more reasonable this way.
The new behavior matches bzip2. The old one matched gzip.
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to stdout even if --force is used.
--force will still enable compression of symlinks, but only
in case they point to a regular file.
The new way simply seems more reasonable. It matches gzip's
behavior while the old one matched bzip2's behavior.
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This is untested but it will get tested soon and, if needed,
fixed before 5.0.0.
Thanks to Stuart Shelton.
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This affects lzma_memusage() and lzma_memlimit_get().
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This breaks API and ABI but most apps are not affected
since most apps don't use this part of the API. You will
get a compile error if you are using anything that got
broken.
Summary of changes:
- Ability to store Stream Flags, which are needed
for random-access reading in multi-Stream files.
- Separate function to set size of Stream Padding.
- Iterator structure makes it possible to read the same
lzma_index from multiple threads at the same time.
- A lot faster code to locate Blocks.
- Removed lzma_index_equal() without adding anything
to replace it. I don't know what it should do exactly
with the new features and what actually needs this
function in the first place other than test_index.c,
which now has its own code to compare lzma_indexes.
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It was fixed in the C code earlier.
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Since the *.gmo files are deleted by the maintainer-clean target,
I assume they are not meant to be tracked.
Also add the other files listed in the Makefile’s clean targets
(stamp-poT, xz.po, xz.[12].po, *.new.po, xz.mo) to make sure they
are not accidentally tracked. Most of these are intermediate
files that would not appear unless a build is interrupted or
fails.
Split the list of untracked files by origin to make it easier to
tell if files are missing in the future.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
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I understood that this is nicer, because then people
don't need to worry about the LZMA_API_STATIC macro.
Thanks to Charles Wilson and Keith Marshall.
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The problem was introduced when adding sparse file
support in 465d1b0d6518c5d980f2db4c2d769f9905bdd902.
Thanks to Charles Wilson.
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Thanks to Marek Černocký.
Other people planning to translate xz: Note that the
messages are a little bit in flux still. Translations
are still welcome, just be prepared to some extra work
in case there are changes.
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for translation bugs.
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Thanks to Marek Černocký.
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Fix a missing _() in the error message too.
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Thanks to Jonathan Nieder.
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This was introduced in
bd13b04e202b6f495a68eb0766f97085b7c50a06.
Thanks to Jim Meyering for noticing it.
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With bad luck this could cause a segfault due to
reading (but not writing) past the end of the buffer.
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lzma_index_read() didn't skip over Stream Padding
if it was the first record in the Index.
lzma_index_cat() didn't combine small Indexes correctly.
The test suite was updated to check for these bugs.
These bugs didn't affect the xz command line tool or
most users of liblzma in any way.
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The Index decoder code didn't perfectly match the API docs,
which said that *i will be set to point to the decoded Index
only after decoding has succeeded. The docs were a bit unclear
too.
Now the decoder will initially set *i to NULL. *i will be set
to point to the decoded Index once decoding has succeeded.
This simplifies applications too, since it avoids dangling
pointers.
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a regular file.
Sparse file creation can be disabled with --no-sparse.
I don't promise yet that the name of this option won't
change before 5.0.0. It's possible that the code, that
checks when it is safe to use sparse output on stdout,
is not good enough, and a more flexible command line
option is needed to configure sparse file handling.
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on that operating system.
I'm too lazy to think how to make a good Autoconf test
for this and it's not that important anyway.
No longer define HAVE_ASM_X86 or HAVE_ASM_X86_64.
Inline assembler (if any) is used if a macro like
__i386__ or __x86_64__ is defined.
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when --enable-small has been specified.
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Thanks to Joachim Henke for the original patch.
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which now use AC_CACHE_CHECK. Using the cache variable,
configure now warns if there is no method to detect the amount
of RAM and recommends using --enable-assume-ram.
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Currently --robot works only with --info-memory and
--version. --help and --long-help work too, but --robot
has no effect on them.
Thanks to Jonathan Nieder for the original patches.
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in the text editor.
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I had hoped to keep liblzma as purely a compression
library as possible (e.g. file I/O will go into
a different library), but it seems that applications
linking agaisnt liblzma need some way to determine
the memory usage limit, and knowing the amount of RAM
is one reasonable way to help making such decisions.
Thanks to Jonathan Nieder for the original patch.
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Originally the idea was that using LZMA_FULL_FLUSH
with Stream encoder would read the filter chain
from the same array that was used to intialize the
Stream encoder. Since most apps wouldn't use
LZMA_FULL_FLUSH, most apps wouldn't need to keep
the filter chain available after initializing the
Stream encoder. However, due to my mistake, it
actually required keeping the array always available.
Since setting the new filter chain via the array
used at initialization time is not a nice way to do
it for a couple of reasons, this commit ditches it
and introduces lzma_filters_update(). This new function
replaces also the "persistent" flag used by LZMA2
(and to-be-designed Subblock filter), which was also
an ugly thing to do.
Thanks to Alexey Tourbin for reminding me about the problem
that Stream encoder used to require keeping the filter
chain allocated.
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It was meant to be lzma_filters_copy(), not lzma_filters_dup().
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This will be needed internally by liblzma once I fix
a design mistake in the encoder API. This function may
be useful to applications too so it's good to export it.
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A minus sign is larger, easier to see in a printout, and more
likely to use the same glyph as ASCII hyphen-minus in a terminal
than a hyphen. Since broken manual pagers do not find hyphens
when the user searches for a hyphen-minus, minus signs are also
easier to search for. So use minus signs instead of hyphens to
render sample terminal output.
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the man page though.
Thanks to Jim Meyering for noticing this.
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This replaces bswap.h and integer.h.
The tuklib module uses <byteswap.h> on GNU,
<sys/endian.h> on *BSDs and <sys/byteorder.h>
on Solaris, which may contain optimized code
like inline assembly.
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in lz_encoder_hash.h.
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Seems that it is a problem in some cases if the same
version of XZ Utils produces different output on different
endiannesses, so this commit fixes that problem. The output
will still vary between different XZ Utils versions, but I
cannot avoid that for now.
This commit bloatens the code on big endian systems by 1 KiB,
which should be OK since liblzma is bloated already. ;-)
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Thanks to Markus Duft for the patch.
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Thanks to Jouk Jansen.
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Thanks to Jouk Jansen.
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Thanks to Jouk Jansen.
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Thanks to Charles Wilson.
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Separate a few reusable components from XZ Utils specific
code. The reusable code is now in "tuklib" modules. A few
more could be separated still, e.g. bswap.h.
Fix some bugs in lzmainfo.
Fix physmem and cpucores code on OS/2. Thanks to Elbert Pol
for help.
Add OpenVMS support into physmem. Add a few #ifdefs to ease
building XZ Utils on OpenVMS. Thanks to Jouk Jansen for the
original patch.
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Thanks to Christian Weisgerber for pointing out some of these.
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This fixes "make install" on operating systems using
a suffix for executables.
Cygwin is treated specially. The symlink names won't have
.exe suffix even though the executables themselves have.
Thanks to Charles Wilson.
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Also move DJGPP-specific code near the code meant
for other DOS-like systems.
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the function call succeeded.
NetBSD 4.0 returns positive values on success, but
NetBSD Current and FreeBSD return zero. OpenBSD's
man page doesn't tell what sysctl() returns on
success. All these BSDs return -1 on error.
Thanks to Robert Elz and Thomas Klausner.
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xz used to reject "xz --lzma2=pb=2," while
"xz --lzma2=pb=2,," worked. Now both work.
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and use a fix that works on all systems using
GNU assembler.
Maybe the assembler code is used e.g. on Solaris x86
but let's worry about it if this doesn't work on it.
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Seems that in addition on Windows and DOS, also OpenBSD
lacks support for %'d style printf() format strings.
So far that is the only modern POSIX-like system I know
with this problem, but after this hack, the thousand
separator shouldn't be a problem on any system.
Maybe testing if a format string like %'d produces
reasonable output is invoking undefined behavior on some
systems, but so far all the problematic systems I've tried
just print the raw format string (e.g. %'d prints 'd).
Maybe Autoconf test would have been better, but this
hack works also for cross-compilation, and avoids
recompilation in case the system libc starts to support
the thousand separator.
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This fixes build on *BSDs and Darwin.
Thanks to Jukka Salmi for the patches.
Richard Koch reported the problem too.
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Thanks to Karl Berry.
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6a2eb54092fc625d59921a607ff68cd1a90aa898 and
71f18e8a066a01dda0c8e5508b135ef104e43e4c required
some changes that weren't applied in debug.
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Thanks to Christian von Roques, Peter Lawler,
and Jim Meyering for the fixes.
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It now includes bug reporting instructions/tips.
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Thanks to Jim Meyering.
(From now on, I try to always remember to put
the relevant thanks to commit messages.)
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Added lzma_nothrow for every function. It adds
throw() when the header is used in C++ code.
Some lzma_attrs were added or removed.
Lots of comments were improved.
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Some questions worth answering were removed, because I
currently don't have good up to date answers to them.
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Thanks to Jonathan Stott for the bug report.
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made in --enable-dynamic.
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Some programs will by default be linked against static
liblzma and some against shared liblzma. --enable-dynamic
now allows overriding the default to both directions
(all dynamic or all static) even when building both
shared and static liblzma.
This is quite messy compared to how simple thing it is supposed
to be. The complexity is mostly due to Windows support.
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install-exec-hook -> install-data-hook
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lzmainfo now links against static liblzma. In contrast
to other command line tools in XZ Utils, linking lzmainfo
against static liblzma by default is dumb. This will be
fixed once I have fixed some related issues in configure.ac.
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Make xz error message translation usable outside
xz (at least in upcoming lzmainfo).
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Attempts to compare two compressed files result in no output and
exit status 2.
Instead of going to standard output, ‘diff’ output is being
captured in the xz_status variable along with the exit status from
the decompression commands. Later, when this variable is examined
for nonzero status codes, numerals from dates in the ‘diff’ output
make it appear as though decompression failed.
So let the ‘diff’ output leak to standard output with another file
descriptor. (This trick is used in all similar contexts elsewhere
in xzdiff and in the analogous context in gzip’s zdiff script.)
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It can be somewhat confusing that
less < some_file.txt
works fine, whereas
xzless < some_file.txt.xz
does not. Since version 429, ‘less’ allows a filter specified in
the LESSOPEN environment variable to preprocess its input even if
it comes from standard input, if $LESSOPEN begins with ‘|-’. So
set $LESSOPEN to take advantage of this feature.
Check less’s version at runtime so xzless can continue to work
with older versions.
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lots of comments from Doxygen.
It seems that the Doxygen authors' intent is to not apply
their copyright on generated files, but since it doesn't
matter for XZ Utils at all, better safe than sorry.
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invalid memory access if XZ_OPT was defined.
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Installation and packaging instructions were added.
README and other generic docs were revised.
Some of the documentation files are now installed to $docdir.
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a little.
Fixed a related bug in the toplevel Makefile.am.
Added the build-aux directory to .gitignore.
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This may slightly ease writing scripts that construct
filter-specific option strings dynamically.
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when no custom chain is in use.
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and to conver the man pages to PDF and plain text, which
may be convenient to those who cannot render man pages.
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This is a quick and slightly dirty fix to make the code
conform to the latest file format specification. Without
this patch, it's possible to make corrupt files by
specifying start offset that is not a multiple of the
filter's alignment. Custom start offset is almost never
used, so this was only a minor bug.
The xz command line tool doesn't validate the start offset,
so one will get a bit unclear error message if trying to use
an invalid start offset.
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like "un", "cat", and "lz" when determining if
xz is run as unxz, xzcat, lzma, unlzma, or lzcat.
This is to ensure that if xz is renamed (e.g. via
--program-transform-name), it doesn't so easily
work in wrong mode.
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It was ignored for compatibility with xz, but now that
--decompress --stdout --force copies unrecognized files
as is to stdout, simply ignoring --force in xzdec would
be wrong. xzdec will not support copying unrecognized
data as is to stdout, so it cannot support --force.
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use AC_PROG_SED. We don't do anything fancy with sed,
so this should work OK. libtool 2.2 sets SED but 1.5
doesn't, so $(SED) happened to work when using libtool 2.2.
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the latest versions found from gzip CVS repository.
configure will try to find a POSIX shell to be used by
the scripts. This should ease portability on systems
which have pre-POSIX /bin/sh.
xzgrep and xzdiff support .xz, .lzma, .gz, and .bz2 files.
xzmore and xzless support only .xz and .lzma files.
The name of the xz executable used in these scripts is
now correct even if --program-transform-name has been used.
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files as is to standard output.
This feature is needed to be more compatible with gzip's
behavior. This was more complicated to implement than it
sounds, because the way liblzma is able to return errors with
files of only a few bytes in size. xz now has its own file
type detection code and no longer uses lzma_auto_decoder().
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xz and xzdec.
Use also PACKAGE_NAME instead of hardcoding "XZ Utils".
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Don't use libtool convenience libraries to avoid recently
discovered long-standing subtle but somewhat severe bugs
in libtool (at least 1.5.22 and 2.2.6 are affected). It
was found when porting XZ Utils to Windows
<http://lists.gnu.org/archive/html/libtool/2009-06/msg00070.html>
but the problem is significant also e.g. on GNU/Linux.
Unless --disable-shared is passed to configure, static
library built from a set of convenience libraries will
contain PIC objects. That is, while libtool builds non-PIC
objects too, only PIC objects will be used from the
convenience libraries. On 32-bit x86 (tested on mobile XP2400+),
using PIC instead of non-PIC makes the decompressor 10 % slower
with the default CFLAGS.
So while xz was linked against static liblzma by default,
it got the slower PIC objects unless --disable-shared was
used. I tend develop and benchmark with --disable-shared
due to faster build time, so I hadn't noticed the problem
in benchmarks earlier.
This commit also adds support for building Windows resources
into liblzma and executables.
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to prepare for building them with Autotools.
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--program-{prefix,suffix,transform} is passed to configure.
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Autotools based builds on Windows.
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Charles Wilson's patches).
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to avoid problems on systems with system headers with those
names.
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format character with snprintf() on POSIX systems but not
on non-POSIX systems and still keep xgettext working.
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the Autotools based build system. It's not good yet, more
fixes will follow.
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Fix the ordering of libgnu.a and LTLIBINTL on the linker
command line and added missing LTLIBINTL to tests/Makefile.am.
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minor cleanups.
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Released .xz spec 1.0.2 due to this fix too.
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via lzma_block structure.
This changes ABI but not doesn't break API.
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and --itanium.
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in the xz command line tool.
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Cleaned up the --help message a little.
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Update the memory usage info text in --help to match
the text in xz --long-help.
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--format=lzma. This means that xz emulating lzma
doesn't decompress .xz files, while before this
commit it did. The new way is slightly simpler in
code and especially in upcoming documentation.
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compressing and decompressing. This should be OK now that
xz automatically scales down the compression settings if
they would exceed the memory usage limit (earlier, the limit
for compression was increased to 90 % because low limit broke
scripts that used "xz -9" on systems with low RAM).
Support spcifying the memory usage limit as a percentage
of RAM (e.g. --memory=50%).
Support --threads=0 to reset the thread limit to the default
value (number of available CPU cores). Use UINT32_MAX instead
of SIZE_MAX as the maximum in args.c. hardware.c was already
expecting uint32_t value.
Cleaned up the output of --help and --long-help.
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Don't round the memory usage limit in xzdec --help to avoid
an integer overflow and to not give wrong impression that
the limit is high enough when it may not actually be.
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This adds lzdiff, lzgrep, and lzmore to the list of symlinks to install.
It also installs symlinks for the manual pages and removes the new
symlinks on uninstall.
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-Wno-uninitialized to silence a bogus warning.
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given to --enable-encoders and --enable-decoders to determine
if any encoder or decoder support is wanted.
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(rewrite will be better).
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which is the filename used on the WWW.
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liblzma tries to avoid useless free()/malloc() pairs in
initialization when multiple files are handled using the
same lzma_stream. This didn't work with filter chains
due to comparison of wrong pointers in lzma_next_coder_init(),
making liblzma think that no memory reallocation is needed
even when it actually is.
Easy way to trigger this bug is to decompress two files with
a single xz command. The first file should have e.g. x86+LZMA2
as the filter chain, and the second file just LZMA2.
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On 64-bit system it would have gone into infinite
loop if a single input buffer was over 4 GiB (unlikely).
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Some minor documentation cleanups were made at the same time.
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Fortunately, this bug had no security risk other than accepting
some corrupt files as valid.
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problems detecting a C99 compiler when some standard
headers are missing.
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