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In this particular case I don't see this affecting readability
of the code.
Thanks to Pavel Raiskup.
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This should help static analysis tools to see that newg
isn't leaked.
Thanks to Pavel Raiskup.
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In C++11, the `throw()` specifier is deprecated and `noexcept` is
preffered instead.
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In most cases it was harmless but it could affect some
custom build systems.
Thanks to Pippijn van Steenhoven.
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Thanks to Melanie Blower (Intel) for the patch.
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Some paths use slashes instead of backslashes as directory
separators... now it should work (I tested VS2013 version).
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These files match the v5.2 branch (no file info decoder).
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It ended up printing an uninitialized char-array when trying to
print the check names (column 7) on the "totals" line.
This also changes the column 12 (minimum xz version) to
50000002 (xz 5.0.0) instead of 0 when there are no valid
input files.
Thanks to kidmin for the bug report.
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It makes ChangeLog significantly smaller.
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xz --list is random access so POSIX_FADV_SEQUENTIAL was clearly
wrong.
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This is to allow other functions to use it without going
via the public API (lzma_index_decoder()).
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Also mention LZMA_SEEK in xz/message.c to silence a warning.
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The 0 got treated specially in a buggy way and as a result
the function did nothing. The API doc said that 0 was supposed
to return LZMA_PROG_ERROR but it didn't.
Now 0 is treated as if 1 had been specified. This is done because
0 is already used to indicate an error from lzma_memlimit_get()
and lzma_memusage().
In addition, lzma_memlimit_set() no longer checks that the new
limit is at least LZMA_MEMUSAGE_BASE. It's counter-productive
for the Index decoder and was actually needed only by the
auto decoder. Auto decoder has now been modified to check for
LZMA_MEMUSAGE_BASE.
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It returned LZMA_PROG_ERROR, which was done to avoid zero as
the limit (because it's a special value elsewhere), but using
LZMA_PROG_ERROR is simply inconvenient and can cause bugs.
The fix/workaround is to treat 0 as if it were 1 byte. It's
effectively the same thing. The only weird consequence is
that then lzma_memlimit_get() will return 1 even when 0 was
specified as the limit.
This fixes a very rare corner case in xz --list where a specific
memory usage limit and a multi-stream file could print the
error message "Internal error (bug)" instead of saying that
the memory usage limit is too low.
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Only one definition was visible in a translation unit.
It avoided a few casts and temp variables but seems that
this hack doesn't work with link-time optimizations in compilers
as it's not C99/C11 compliant.
Fixes:
http://www.mail-archive.com/xz-devel@tukaani.org/msg00279.html
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It's available in glibc (GNU/Linux, GNU/kFreeBSD). It's better
than sysconf(_SC_NPROCESSORS_ONLN) because sched_getaffinity()
gives the number of cores available to the process instead of
the total number of cores online.
As a side effect, this commit fixes a bug on GNU/kFreeBSD where
configure would detect the FreeBSD-specific cpuset_getaffinity()
but it wouldn't actually work because on GNU/kFreeBSD it requires
using -lfreebsd-glue when linking. Now the glibc-specific function
will be used instead.
Thanks to Sebastian Andrzej Siewior for the original patch
and testing.
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xz used to call utime() on Windows, but its result gets lost
on close(). Using _futime() seems to work.
Thanks to Martok for reporting the bug:
http://www.mail-archive.com/xz-devel@tukaani.org/msg00261.html
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Thanks to Evan Nemerson.
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Thanks to Christian Kujau.
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It silences a few warnings and most people probably have
0.19 even on stable distributions.
Thanks to Christian Kujau.
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This is the sane thing to do. The conflict with OpenSSL
on some OSes and especially that the OS-provided versions
can be significantly slower makes it clear that it was
a mistake to have the external SHA-256 support enabled by
default.
Those who want it can now pass --enable-external-sha256 to
configure. INSTALL was updated with notes about OSes where
this can be a bad idea.
The SHA-256 detection code in configure.ac had some bugs that
could lead to a build failure in some situations. These were
fixed, although it doesn't matter that much now that the
external SHA-256 is disabled by default.
MINIX >= 3.2.0 uses NetBSD's libc and thus has SHA256_Init
in libc instead of libutil. Support for the libutil version
was removed.
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On FreeBSD 10 and older, SHA256_Init from libmd conflicts
with libcrypto from OpenSSL. The OpenSSL version has
different sizeof(SHA256_CTX) and it can cause weird
problems if wrong SHA256_Init gets used.
Looking at the source, MINIX 3 seems to have a similar issue but
I'm not sure. To be safe, I disabled SHA256_Init on MINIX 3 too.
NetBSD has SHA256_Init in libc and they had a similar problem,
but they already fixed it in 2009.
Thanks to Jim Wilcoxson for the bug report that helped
in finding the problem.
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When optimizing, GCC can reorder code so that an uninitialized
value gets used in a comparison, which makes Valgrind unhappy.
It doesn't happen when compiled with -O0, which I tend to use
when running Valgrind.
Thanks to Rich Prohaska. I remember this being mentioned long
ago by someone else but nothing was done back then.
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It would be too annoying to update other build systems
just because of this.
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They all need decoder support and if that isn't available,
there's no point trying to build them.
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The patch is quite long but it's mostly about adding new #ifdefs
to omit code when encoders or decoders have been disabled.
This adds two new #defines to config.h: HAVE_ENCODERS and
HAVE_DECODERS.
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People shouldn't rely on the presets when decoding raw streams,
but xz uses the presets as the starting point for raw decoder
options anyway.
lzma_encocder_presets.c was renamed to lzma_presets.c to
make it clear it's not used solely by the encoder code.
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Now it gives an error if LZMA1 encoder/decoder is missing
when LZMA2 encoder/decoder was requested. Even better would
be LZMA2 implicitly enabling LZMA1 but it would need more code.
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Previously it was omitted if encoders were disabled
with --disable-encoders. It didn't make sense and
it also broke the build.
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If an appropriate header and structure were found by configure,
but a library with a usable SHA-256 functions wasn't, the build
failed.
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unlink() can return EBUSY in errno for open files on some
operating systems and file systems.
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Stream Flags and Stream Padding weren't copied from
empty Streams.
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lzma_index_dup() calls index_dup_stream() which, in case of
an error, calls index_stream_end() to free memory allocated
by index_stream_init(). However, it illogically didn't
actually free the memory. To make it logical, the tree
handling code was modified a bit in addition to changing
index_stream_end().
Thanks to Evan Nemerson for the bug report.
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Provide an update of the German translation.
* A lot of compound words were previously written with spaces, while
German orthography is relatively clear in that the components
should not be separated.
* When referring to the actual process of (de)compression rather than the
concept, replace “(De-)Kompression” with “(De-)Komprimierung”.
Previously, both forms were used in this context and are now used in a
manner consistent with “Komprimierung” being more likely to refer to
a process.
* Consistently translate “standard input”/“output”
* Use “Zeichen” instead of false friend “Charakter” for “character”
* Insert commas around relative clauses (as required in German)
* Some other minor corrections
* Capitalize “ß” as “ẞ”
* Consistently start option descriptions in --help with capital letters
Acked-By: Andre Noll <maan@tuebingen.mpg.de>
* Update after msgmerge
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Some tests used "cygwin*" and some used "cygwin". I changed
them all to use "cygwin". Shouldn't affect anything in practice.
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src/liblzma/common/common.h uses it to set __declspec(dllexport)
for the API symbols.
Thanks to Adam Walling.
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Thanks to Adam Walling for creating these files.
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As pointed out by Robert Pollak, there's a typo in the German
translation of the compression preset option (-0 ... -9) help text.
"The compressor" translates to "der Komprimierer", and the genitive
form is "des Komprimierers". The old word makes no sense at all.
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Thanks to Cristian Rodríguez.
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Thanks to Andy Hochhaus.
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This reverts commit 7a11c4a8e5e15f13d5fa59233b3172e65428efdd.
It is a problem when libc has pipe2() but the kernel is too
old to have pipe2() and thus pipe2() fails. In xz it's pointless
to have a fallback for non-functioning pipe2(); it's better to
avoid pipe2() completely.
Thanks to Michael Fox for the bug report.
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The sandboxing is used conditionally as described in main.c.
This isn't optimal but it was much easier to implement than
a full sandboxing solution and it still covers the most common
use cases where xz is writing to standard output. This should
have practically no effect on performance even with small files
as fork() isn't needed.
C and locale libraries can open files as needed. This has been
fine in the past, but it's a problem with things like Capsicum.
io_sandbox_enter() tries to ensure that various locale-related
files have been loaded before cap_enter() is called, but it's
possible that there are other similar problems which haven't
been seen yet.
Currently Capsicum is available on FreeBSD 10 and later
and there is a port to Linux too.
Thanks to Loganaden Velvindron for help.
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AU_ALIAS was removed because the new version is incompatible
with the old version.
It no longer checks for <sys/capability.h> separately.
It's enough to test for it as part of AC_CHECK_DECL.
The defines HAVE_CAPSICUM_SYS_CAPSICUM_H and
HAVE_CAPSICUM_SYS_CAPABILITY_H were removed as unneeded.
HAVE_SYS_CAPSICUM_H from AC_CHECK_HEADERS is enough.
It no longer does a useless search for the Capsicum library
if the header wasn't found.
Fixed a bug in ACTION-IF-FOUND (the first argument). Specifying
the argument omitted the default action but the given action
wasn't used instead.
AC_DEFINE([HAVE_CAPSICUM]) is now always called when Capsicum
support is found. Previously it was part of the default
ACTION-IF-FOUND which a custom action would override. Now
the default action only prepends ${CAPSICUM_LIB} to LIBS.
The documentation was updated.
Since there as no serial number, "#serial 2" was added.
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The file was loaded from this web page:
https://github.com/google/capsicum-test/blob/dev/autoconf/m4/ax_check_capsicum.m4
Thanks to Loganaden Velvindron for pointing it out for me.
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The idea of 99 is that it looks a bit weird in this context.
For new features there's no API/ABI stability in devel versions.
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The earlier version compiled but didn't actually work
since sysconf(_SC_PHYS_PAGES) always fails (or so I was told).
Thanks to Ole André Vadla Ravnås for the patch and testing.
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It tried to use sysctl() on QNX but
- it broke the build because sysctl() needs -lsocket on QNX;
- sysctl() doesn't work for detecting the core count on QNX
even if it compiled.
sysconf() works. An alternative would have been to use
QNX-specific SYSPAGE_ENTRY(num_cpu) from <sys/syspage.h>.
Thanks to Ole André Vadla Ravnås.
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Actually the value of arg_count cannot exceed INT_MAX
but it's nicer as an unsigned int.
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The bug was added in the commit
f48fce093b07aeda95c18850f5e086d9f2383380 and thus
affected 5.1.4beta and 5.2.0. Luckily the bug cannot
cause data corruption or other nasty things.
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Now it reads the old flags instead of blindly setting O_NONBLOCK.
The old code may have worked correctly, but this is better.
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In FreeBSD, cpuset_getaffinity() is the preferred way to get
the number of available cores.
Thanks to Rui Paulo for the patch. I edited it slightly, but
hopefully I didn't break anything.
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Thanks to Rui Paulo for the fix.
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I heard that Visual Studio 2013 gave warnings without the casts.
Thanks to Gabi Davar.
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Thanks to Torsten Rupp for reporting this. I had
forgotten to run Valgrind before the 5.2.0 release.
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This is similar to the case with stdin.
Thanks to Brad Smith for the bug report and testing
on OpenBSD.
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It's a problem at least on OpenBSD which doesn't support
O_NONBLOCK on e.g. /dev/null. I'm not surprised if it's
a problem on other OSes too since this behavior is allowed
in POSIX-1.2008.
The code relying on this behavior was committed in June 2013
and included in 5.1.3alpha released on 2013-10-26. Clearly
the development releases only get limited testing.
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Hiding them makes no sense since normally there's no error
when testing the "good" files. With "bad" files errors are
expected and then it makes sense to keep the messages hidden.
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Mention the possible "make check" failure on Solaris in the
Solaris-specific section of INSTALL. It was already in
section 4.5 but it is better mention it in the OS-specific
section too.
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I know that soname != app version, but I skip AGE=1
in -version-info to make the soname match the liblzma
version anyway. It doesn't hurt anything as long as
it doesn't conflict with library versioning rules.
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The 32-bit build is now for i686 or newer because the
prebuilt MinGW-w64 toolchains include i686 code in the
executables even if one uses -march=i486.
The build script builds 32-bit SSE2 enabled version too.
Run-time detection of SSE2 support would be nice (on any OS)
but it's not implemented in XZ Utils yet.
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It is to keep all symbols in the lzma_ namespace.
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Four new error messages.
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The following is a copy of a comment inside fr.po:
Note from translator on "file status flags".
The following entry is kept un-translated on purpose. It is difficult to
translate and should only happen in exceptional circumstances which means
that translating would:
- lose some of the meaning
- make it more difficult to look up in search engines; it might happen one
in
a million times, if we dilute the error message in 20 languages, it will be
almost impossible to find an explanation and support for the error.
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Meaning doesn't change at all: it's only for better wording and/or
formatting of a few strings.
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This way an invalid filter chain is detected at the Stream
encoder initialization instead of delaying it to the first
call to lzma_code() which triggers the initialization of
the actual filter encoder(s).
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Thanks to Daniel Richard G. for pointing out that it's
good to sometimes run autoreconf -fi with -Wall.
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This avoids the possibility of "File name too long" when
creating a temp file when the input file name is very long.
This also means that other users on the system can no longer
see the input file names in /tmp (or whatever $TMPDIR is)
since the temporary directory will have a generic name. This
usually doesn't matter since on many systems one can see
the arguments given to all processes anyway.
The number X chars to mktemp where increased from 6 to 10.
Note that with some shells temp files or dirs won't be used at all.
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It read the filter chain from a wrong variable. This is a similar
bug that was fixed in 9494fb6d0ff41c585326f00aa8f7fe58f8106a5e.
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Due to a bug in Automake, subdir-objects won't be enabled
for now.
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17354
Thanks to Daniel Richard G. for the original patches.
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Thanks to Milo Casagrande.
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Thanks to Jakub Bogusz.
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Although the old address is still working, the new one should
be preferred. So this commit changes all three places in de.po
accordingly.
Signed-off-by: Andre Noll <maan@tuebingen.mpg.de>
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Signed-off-by: Andre Noll <maan@systemlinux.org>
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That's a funny one since "schießen" means to shoot :)
Signed-off-by: Andre Noll <maan@systemlinux.org>
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Thanks to Fredrik Wikstrom.
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The behavior of grep -ql varies:
- GNU grep behaves like grep -q.
- OpenBSD grep behaves like grep -l.
POSIX doesn't make it 100 % clear what behavior is expected.
Anyway, using both -q and -l at the same time makes no sense
so both options simply should never be used at the same time.
Thanks to Christian Weisgerber.
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Signed-off-by: Trần Ngọc Quân <vnwildman@gmail.com>
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Clang and nowadays also GCC accept any -Wfoobar option
but then may give a warning that an unknown warning option
was specified. To avoid adding unsupported warning options,
the options are now tested with -Werror.
Thanks to Charles Diza.
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POSIX supports $< only in inference rules (suffix rules).
Using it elsewhere is a GNU make extension and doesn't
work e.g. with OpenBSD make.
Thanks to Christian Weisgerber for the patch.
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Note that this slightly changes how lzma_block_header_decode()
has been documented. Earlier it said that the .version is set
to the lowest required value, but now it says that the .version
field is kept unchanged if possible. In practice this doesn't
affect any old code, because before this commit the only
possible .version was 0.
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I had missed this when writing the commit
5db75054e900fa06ef5ade5f2c21dffdd5d16141.
Thanks to Jun I Jin.
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The Maj macro is used where multiple things are added
together, so making Maj a sum of two expressions allows
some extra freedom for the compiler to schedule the
instructions.
I learned this trick from
<http://www.hackersdelight.org/corres.txt>.
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This looks weird because the rotations become sequential,
but it helps quite a bit on both 32-bit and 64-bit x86:
- It requires fewer instructions on two-operand
instruction sets like x86.
- It requires one register less which matters especially
on 32-bit x86.
I hope this doesn't hurt other archs.
I didn't invent this idea myself, but I don't remember where
I saw it first.
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The unrolling in the previous commit should avoid the
situation where a compiler may think that an uninitialized
variable might be accessed.
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This way a branch isn't needed for each operation
to choose between blk0 and blk2, and still the code
doesn't grow as much as it would with full unrolling.
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Two locations were not changed yet because the simplest change
assumes that the initial "len" may be greater than "limit".
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This doesn't change the match finder output.
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This commit just adds the function. Its uses will be in
separate commits.
This hasn't been tested much yet and it's perhaps a bit early
to commit it but if there are bugs they should get found quite
quickly.
Thanks to Jun I Jin from Intel for help and for pointing out
that string comparison needs to be optimized in liblzma.
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Thanks to Trần Ngọc Quân.
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Updated: --threads, --block-size, and --block-list
Added: --flush-timeout
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This avoids LZMA_PROG_ERROR from lzma_code() with filter chains
that don't support LZMA_SYNC_FLUSH.
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Now it should be close to the functionality of the original
version by Pavel Raiskup.
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This is a simplified version of Pavel Raiskup's
original patch.
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