X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Ftar;a=blobdiff_plain;f=doc%2Ftar.texi;h=6323d2181f3c981fe9d44b611c193e9f98ca3fd0;hp=979e2427954ef2d199774456a8325cf7608b9c4a;hb=45ccda119355a1087450039a250359c1d0de0d08;hpb=f0a1f78196f75678424712ac36f0a4a46e3e5658

diff --git a/doc/tar.texi b/doc/tar.texi
index 979e242..6323d21 100644
--- a/doc/tar.texi
+++ b/doc/tar.texi
@@ -3086,6 +3086,19 @@ Used when creating an archive.  Prevents @command{tar} from recursing into
 directories that are on different file systems from the current
 directory.
 
+@opsummary{one-top-level}
+@item --one-top-level[=@var{dir}]
+Tells @command{tar} to create a new directory beneath the extraction directory
+(or the one passed to @option{-C}) and use it to guard against
+tarbombs.  In the absence of @var{dir} argument, the name of the new directory
+will be equal to the base name of the archive (file name minus the
+archive suffix, if recognized).  Any member names that do not begin
+with that directory name (after 
+transformations from @option{--transform} and
+@option{--strip-components}) will be prefixed with it.  Recognized
+file name suffixes are @samp{.tar}, and any compression suffixes
+recognizable by @xref{--auto-compress}.
+
 @opsummary{overwrite}
 @item --overwrite
 
@@ -3614,7 +3627,7 @@ successfully.  For example, @w{@samp{tar --version}} might print:
 
 @smallexample
 tar (GNU tar) @value{VERSION}
-Copyright (C) 2013 Free Software Foundation, Inc.
+Copyright (C) 2013-2014 Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
@@ -3975,7 +3988,10 @@ tar: Hit write checkpoint #20
 tar: Hit write checkpoint #30
 @end smallexample
 
-The complete list of available format specifiers follows:
+The complete list of available format specifiers follows.  Some of
+them can take optional arguments.  These arguments, if given, are
+supplied in curly braces between the percent sign and the specifier
+letter.
 
 @table @samp
 @item %s
@@ -3984,17 +4000,18 @@ Print type of the checkpoint (@samp{write} or @samp{read}).
 @item %u
 Print number of the checkpoint.
 
-@item %T
+@item %@{r,w,d@}T
 Print number of bytes transferred so far and approximate transfer
-speed.  The number is preceded by @samp{W:}, when writing and by
-@samp{R:} when reading.  If @command{tar} is performing delete
-operation (@pxref{delete}), three numbers are printed: number of bytes
-read, written and deleted, each of them prefixed by @samp{R:},
-@samp{W:} and @samp{D:} correspondingy.  For example:
+speed.  Optional arguments supply prefixes to be used before number
+of bytes read, written and deleted, correspondingly.  If absent,
+they default to @samp{R}. @samp{W}, @samp{D}.  Any or all of them can
+be omitted, so, that e.g. @samp{%@{@}T} means to print corresponding
+statistics without any prefixes.  Any surplus arguments, if present,
+are silently ignored.
 
 @example
 $ @kbd{tar --delete -f f.tar --checkpoint-action=echo="#%u: %T" main.c}
-tar: #1: R: 0 (0B, ?/s),W: 0 (0B, ?/s),D: 0
+tar: #1: R: 0 (0B, 0B/s),W: 0 (0B, 0B/s),D: 0
 tar: #2: R: 10240 (10KiB, 19MiB/s),W: 0 (0B, 0B/s),D: 10240
 @end example
 
@@ -4012,6 +4029,10 @@ for the current locale.
 Pad output with spaces to the @var{n}th column.  If the
 @samp{@{@var{n}@}} part is omitted, the current screen width
 is assumed.
+
+@item %@var{c}
+This is a shortcut for @samp{%@{%Y-%m-%d %H:%M:%S@}t: %ds, %@{read,wrote@}T%*\r},
+intended mainly for use with @samp{ttyout} action (see below).
 @end table
 
 Aside from format expansion, the message string is subject to