2010-10-23 11:15:35 +00:00
|
|
|
|
|
|
|
|
XZ Utils User-Visible Changes
|
|
|
|
|
=============================
|
|
|
|
|
|
2011-01-28 18:16:57 +00:00
|
|
|
5.0.1 (2011-01-29)
|
|
|
|
|
|
|
|
|
|
* xz --force now (de)compresses files that have setuid, setgid,
|
|
|
|
|
or sticky bit set and files that have multiple hard links.
|
|
|
|
|
The man page had it documented this way already, but the code
|
|
|
|
|
had a bug.
|
|
|
|
|
|
|
|
|
|
* gzip and bzip2 support in xzdiff was fixed.
|
|
|
|
|
|
|
|
|
|
* Portability fixes
|
|
|
|
|
|
|
|
|
|
* Minor fix to Czech translation
|
|
|
|
|
|
|
|
|
|
|
2010-10-23 11:15:35 +00:00
|
|
|
5.0.0 (2010-10-23)
|
|
|
|
|
|
|
|
|
|
Only the most important changes compared to 4.999.9beta are listed
|
|
|
|
|
here. One change is especially important:
|
|
|
|
|
|
|
|
|
|
* The memory usage limit is now disabled by default. Some scripts
|
|
|
|
|
written before this change may have used --memory=max on xz command
|
|
|
|
|
line or in XZ_OPT. THESE USES OF --memory=max SHOULD BE REMOVED
|
|
|
|
|
NOW, because they interfere with user's ability to set the memory
|
|
|
|
|
usage limit himself. If user-specified limit causes problems to
|
|
|
|
|
your script, blame the user.
|
|
|
|
|
|
|
|
|
|
Other significant changes:
|
|
|
|
|
|
|
|
|
|
* Added support for XZ_DEFAULTS environment variable. This variable
|
|
|
|
|
allows users to set default options for xz, e.g. default memory
|
|
|
|
|
usage limit or default compression level. Scripts that use xz
|
|
|
|
|
must never set or unset XZ_DEFAULTS. Scripts should use XZ_OPT
|
|
|
|
|
instead if they need a way to pass options to xz via an
|
|
|
|
|
environment variable.
|
|
|
|
|
|
|
|
|
|
* The compression settings associated with the preset levels
|
|
|
|
|
-0 ... -9 have been changed. --extreme was changed a little too.
|
|
|
|
|
It is now less likely to make compression worse, but with some
|
|
|
|
|
files the new --extreme may compress slightly worse than the old
|
|
|
|
|
--extreme.
|
|
|
|
|
|
|
|
|
|
* If a preset level (-0 ... -9) is specified after a custom filter
|
|
|
|
|
chain options have been used (e.g. --lzma2), the custom filter
|
|
|
|
|
chain will be forgotten. Earlier the preset options were
|
|
|
|
|
completely ignored after custom filter chain options had been
|
|
|
|
|
seen.
|
|
|
|
|
|
|
|
|
|
* xz will create sparse files when decompressing if the uncompressed
|
|
|
|
|
data contains long sequences of binary zeros. This is done even
|
|
|
|
|
when writing to standard output that is connected to a regular
|
|
|
|
|
file and certain additional conditions are met to make it safe.
|
|
|
|
|
|
|
|
|
|
* Support for "xz --list" was added. Combine with --verbose or
|
|
|
|
|
--verbose --verbose (-vv) for detailed output.
|
|
|
|
|
|
|
|
|
|
* I had hoped that liblzma API would have been stable after
|
|
|
|
|
4.999.9beta, but there have been a couple of changes in the
|
|
|
|
|
advanced features, which don't affect most applications:
|
|
|
|
|
|
|
|
|
|
- Index handling code was revised. If you were using the old
|
|
|
|
|
API, you will get a compiler error (so it's easy to notice).
|
|
|
|
|
|
|
|
|
|
- A subtle but important change was made to the Block handling
|
|
|
|
|
API. lzma_block.version has to be initialized even for
|
|
|
|
|
lzma_block_header_decode(). Code that doesn't do it will work
|
|
|
|
|
for now, but might break in the future, which makes this API
|
|
|
|
|
change easy to miss.
|
|
|
|
|
|
|
|
|
|
* The major soname has been bumped to 5.0.0. liblzma API and ABI
|
|
|
|
|
are now stable, so the need to recompile programs linking against
|
|
|
|
|
liblzma shouldn't arise soon.
|
|
|
|
|
|
