update rsyncable patch, etc

[debian/gzip] / doc / gzip.texi

diff --git a/doc/gzip.texi b/doc/gzip.texi
index 84887c3f0c26fa9fad564d9e26f6bad0f765577f..ffe20b4acfcf811d6edff48382e6bce5e3f7700c 100644 (file)
--- a/doc/gzip.texi
+++ b/doc/gzip.texi
@@ -11,7 +11,7 @@ This manual is for GNU Gzip
 (version @value{VERSION}, @value{UPDATED}),
 and documents commands for compressing and decompressing data.
 
-Copyright @copyright{} 1998-1999, 2001-2002, 2006-2007, 2009-2010 Free Software
+Copyright @copyright{} 1998-1999, 2001-2002, 2006-2007, 2009-2012 Free Software
 Foundation, Inc.
 
 Copyright @copyright{} 1992, 1993 Jean-loup Gailly
@@ -207,6 +207,7 @@ Mandatory arguments to long options are mandatory for short options too.
   -V, --version     display version number
   -1, --fast        compress faster
   -9, --best        compress better
+    --rsyncable   Make rsync-friendly archive
 
 With no FILE, or when FILE is -, read standard input.
 
@@ -228,7 +229,7 @@ stopping on the first failure:
 find . -name '*
 *' -prune -o -name '*.gz' -type f -print |
   sed "
-    s/'/'\\''/g
+    s/'/'\\\\''/g
     s/^\\(.*\\)\\.gz$/gunzip <'\\1.gz' >'\\1'/
   " |
   sh -e
@@ -361,6 +362,22 @@ in the uncompressed input when syncronizing two files compressed with
 this flag.  @code{gunzip} cannot tell the difference between a
 compressed file created with this option, and one created without it.
 
+@item --rsyncable
+While compressing, synchronize the output occasionally based on
+the input.  This increases size by less than 1 percent most
+cases, but means that the @command{rsync} program can much more efficiently
+synchronize files compressed with this flag.  @command{gunzip}
+cannot tell the difference between a compressed file created
+with this option, and one created without it.
+
+@item --rsyncable
+While compressing, synchronize the output occasionally based on the
+input.  This can reduce the compression slightly in some cases, but
+means that the @code{rsync} program can take advantage of similarities
+in the uncompressed input when syncronizing two files compressed with
+this flag.  @code{gunzip} cannot tell the difference between a
+compressed file created with this option, and one created without it.
+
 @item --suffix @var{suf}
 @itemx -S @var{suf}
 Use suffix @var{suf} instead of @samp{.gz}.  Any suffix can be