-GNU tar NEWS - User visible changes. 2008-04-14
+GNU tar NEWS - User visible changes. 2009-03-04
Please send GNU tar bug reports to <bug-tar@gnu.org>
\f
+version 1.21.90 (CVS)
+
+* Support for xz compression
+
+Tar uses xz for compression if at least one of the following
+conditions is met:
+
+ 1. The option --xz or -J (see below) is used.
+ 2. The xz binary is set as compressor using --use-compress-program option.
+ 3. The file name of the archive being created ends in `.xz' and
+ auto-compress option (-a) is used.
+
+Xz is used for decompression if at least one of the following
+conditions is met:
+
+ 1. The option --xz or -J is used.
+ 2. The xz binary is set as compressor using --use-compress-program option.
+ 3. The file is recognized as xz compressed stream data.
+
+* Short option -J
+
+The decision to assign -J option was taken just before the XZ format
+has been officially declared stable. Now, that stable xz tools are
+available, the -J option is re-assigned as a short equivalent of --xz.
+
+* New option -I
+
+The -I option is assigned as a short equivalent for
+--use-compress-program.
+
+\f
+version 1.21 - Sergey Poznyakoff, 2008-12-27
+
+* New short option -J
+
+A shortcut for --lzma.
+
+* New option --lzop
+
+* New option --no-auto-compress
+
+Cancels the effect of previous --auto-compress (-a) option.
+
+* New option --no-null
+
+Cancels the effect of previous --null option.
+
+* Compressed format recognition
+
+If tar is unable to determine archive compression format, it falls
+back to using archive suffix to determine it.
+
+* VCS support.
+
+Using --exclude-vcs handles also files used internally by Bazaar,
+Mercurial and Darcs.
+
+* Transformation scope flags
+
+Name transformation expressions understand additional flags that
+control type of archive members affected by them. The flags are:
+
+ - r
+ Apply transformation to regular archive members.
+
+ - s
+ Apply transformation to symbolic link targets.
+
+ - h
+ Apply transformation to hard link targets.
+
+Corresponding upper-case letters negate the meaning, so that
+`H' means ``do not apply transformation to hard link targets.''
+
+The scope flags are listed in the third part of an `s' expression,
+e.g.:
+
+ tar --transform 's|^|/usr/local/|S'
+
+Default is `rsh', which means that transformations are applied to
+both regular archive members and to the targets of symbolic and hard
+links. If several transform expressions are used, the default flags
+can be changed using `flags=' statement before the expressions, e.g.:
+
+ tar --transform 'flags=S;s|^|/usr/local/|S'
+
+* Bugfixes
+
+** The --null option disabled handling of tar options in list files. This
+is fixed.
+** Fixed record size autodetection. If detected record size differs from
+the expected value (either default, or set on the command line), tar
+always prints a warning if verbosity level is set to 1 or greater,
+i.e. if either -t or -v option is given.
+
+\f
+
version 1.20 - Sergey Poznyakoff, 2008-04-14
* New option --auto-compress (-a)
The value of the blocking factor is made available to info and
checkpoint scripts via environment variable TAR_BLOCKING_FACTOR.
+* Incremental archives
+
+Improved (sped up) extracting from incremental archives.
+
* Bugfixes.
** Fix bug introduced in version 1.19: tar refused to update non-existing
archives.
projects / chaz / tar / blobdiff