* doc/gzip.texi (Overview): Update RFC URLs.
* gzip.1: Likewise. Don't say "SEE ALSO" to programs that almost
nobody has installed anymore.
* gzip.1, zmore.1: Fix some troff typos.
* zdiff.1: Clarify what happens with input files. Don't talk
about temporary file names, as they're rarely used these days.
---
doc/gzip.texi | 4 ++--
gzip.1 | 51 +++++++++++++++++++++------------------------------
zdiff.1 | 10 ++++++----
zmore.1 | 11 ++++++-----
4 files changed, 35 insertions(+), 41 deletions(-)
diff --git a/doc/gzip.texi b/doc/gzip.texi
index 8220960..106ecdb 100644
--- a/doc/gzip.texi
+++ b/doc/gzip.texi
@@ -171,10 +171,10 @@ ownership and time stamps of files when compressing or
decompressing.
The @command{gzip} file format is specified in P. Deutsch, @sc{gzip} file
format specification version 4.3,
-@uref{ftp://ftp.isi.edu/in-notes/rfc1952.txt, Internet @abbr{RFC} 1952} (May
+@uref{http://www.ietf.org/rfc/rfc1952.txt, Internet @abbr{RFC} 1952} (May
1996). The @command{zip} deflation format is specified in P. Deutsch,
@sc{deflate} Compressed Data Format Specification version 1.3,
-@uref{ftp://ftp.isi.edu/in-notes/rfc1951.txt, Internet @abbr{RFC} 1951} (May
+@uref{http://www.ietf.org/rfc/rfc1951.txt, Internet @abbr{RFC} 1951} (May
1996).
@node Sample
diff --git a/gzip.1 b/gzip.1
index 8db327d..c97aeb1 100644
--- a/gzip.1
+++ b/gzip.1
@@ -28,7 +28,7 @@ gzip, gunzip, zcat \- compress or expand files
reduces the size of the named files using Lempel-Ziv coding (LZ77).
Whenever possible,
each file is replaced by one with the extension
-.B "\&.gz,"
+.BR "\&.gz" ,
while keeping the same ownership modes, access and modification times.
(The default extension is
.B "\-gz"
@@ -65,7 +65,7 @@ Compressed files can be restored to their original form using
or
.I gunzip
or
-.I zcat.
+.IR zcat .
If the original name saved in the compressed file is not suitable for its
file system, a new name is constructed from the original one to make it
legal.
@@ -95,14 +95,19 @@ extension.
.PP
.I gunzip
can currently decompress files created by
-.I gzip, zip, compress, compress -H
+.IR gzip ,
+.IR zip ,
+.IR compress ,
+.I "compress -H"
or
-.I pack.
+.IR pack .
The detection of the input format is automatic. When using
the first two formats,
.I gunzip
checks a 32 bit CRC. For
-.I pack, gunzip
+.I pack
+and
+.I gunzip
checks the uncompressed length. The standard
.I compress
format was not designed to allow consistency checks. However
@@ -131,18 +136,18 @@ To extract zip files
with several members, use
.I unzip
instead of
-.I gunzip.
+.IR gunzip .
.PP
.I zcat
is identical to
.I gunzip
-.B \-c.
+.BR \-c .
(On some systems,
.I zcat
may be installed as
.I gzcat
to preserve the original link to
-.I compress.)
+.IR compress .)
.I zcat
uncompresses either a list of files on the command line or its
standard input and writes the uncompressed data on standard output.
@@ -176,17 +181,6 @@ number of used disk blocks almost never increases.
.I gzip
preserves the mode, ownership and timestamps of files when compressing
or decompressing.
-.PP
-The
-.I gzip
-file format is specified in P. Deutsch, \s-1GZIP\s0 file format
-specification version 4.3, <ftp://ftp.isi.edu/in-notes/rfc1952.txt>,
-Internet RFC 1952 (May 1996). The
-.I zip
-deflation format is specified in P. Deutsch, \s-1DEFLATE\s0 Compressed
-Data Format Specification version 1.3,
-<ftp://ftp.isi.edu/in-notes/rfc1951.txt>, Internet RFC 1951 (May 1996).
-
.SH OPTIONS
.TP
.B \-a --ascii
@@ -208,12 +202,12 @@ Force compression or decompression even if the file has
multiple links
or the corresponding file already exists, or if the compressed data
is read from or written to a terminal. If the input data is not in
a format recognized by
-.I gzip,
+.IR gzip ,
and if the option --stdout is also given, copy the input data without change
to the standard output: let
.I zcat
behave as
-.I cat.
+.IR cat .
If
.B \-f
is not given,
@@ -298,8 +292,6 @@ are transferred to other systems.
When decompressing, add .suf to the beginning of the list of
suffixes to try, when deriving an output file name from an input file name.
-
-.IR pack "(1)".
.TP
.B \-t --test
Test. Check the compressed file integrity.
@@ -372,7 +364,7 @@ replacement.
The environment variable
.B GZIP
can hold a set of default options for
-.I gzip.
+.IR gzip .
These options are interpreted first and can be overwritten by
explicit command line parameters. For example:
for sh: GZIP="-8v --name"; export GZIP
@@ -382,20 +374,19 @@ explicit command line parameters. For example:
On Vax/VMS, the name of the environment variable is GZIP_OPT, to
avoid a conflict with the symbol set for invocation of the program.
.SH "SEE ALSO"
-znew(1), zcmp(1), zmore(1), zforce(1), gzexe(1), zip(1), unzip(1), compress(1),
-pack(1), compact(1)
+znew(1), zcmp(1), zmore(1), zforce(1), gzexe(1), zip(1), unzip(1), compress(1)
.PP
The
.I gzip
file format is specified in P. Deutsch, \s-1GZIP\s0 file format
specification version 4.3,
-.BR <ftp://ftp.isi.edu/in-notes/rfc1952.txt> ,
+.BR <http://www.ietf.org/rfc/rfc1952.txt> ,
Internet RFC 1952 (May 1996).
The
.I zip
deflation format is specified in P. Deutsch, \s-1DEFLATE\s0 Compressed
Data Format Specification version 1.3,
-.BR <ftp://ftp.isi.edu/in-notes/rfc1951.txt> ,
+.BR <http://www.ietf.org/rfc/rfc1951.txt> ,
Internet RFC 1951 (May 1996).
.SH "DIAGNOSTICS"
Exit status is normally 0;
@@ -487,9 +478,9 @@ In some rare cases, the --best option gives worse
compression than
the default compression level (-6). On some highly redundant files,
.I compress
compresses better than
-.I gzip.
+.IR gzip .
.SH "COPYRIGHT NOTICE"
-Copyright \(co 1998, 1999, 2001, 2002 Free Software Foundation, Inc.
+Copyright \(co 1998, 1999, 2001, 2002, 2012 Free Software Foundation, Inc.
.br
Copyright \(co 1992, 1993 Jean-loup Gailly
.PP
diff --git a/zdiff.1 b/zdiff.1
index 588974c..0c826c3 100644
--- a/zdiff.1
+++ b/zdiff.1
@@ -23,14 +23,15 @@ All options specified are passed directly to
.I cmp
or
.IR diff "."
-If only 1 file is specified, then the files compared are
+If only
.I file1
-and an uncompressed
+is specified, it is compared to the uncompressed contents of
.IR file1 ".gz."
-If two files are specified, then they are uncompressed if necessary and fed to
+If two files are specified, their contents (uncompressed if necessary) are fed
to
.I cmp
or
.IR diff "."
+The input files are not modified.
The exit status from
.I cmp
or
@@ -43,4 +44,5 @@ Messages from the
.I cmp
or
.I diff
-programs refer to temporary filenames instead of those specified.
+programs may refer to file names such as "\-" instead of to the file
+names specified.
diff --git a/zmore.1 b/zmore.1
index c5be894..e2ff835 100644
--- a/zmore.1
+++ b/zmore.1
@@ -10,9 +10,10 @@ is a filter which allows examination of compressed or plain
text files
one screenful at a time on a soft-copy terminal.
.I zmore
works on files compressed with
-.I compress, pack
+.IR compress ,
+.I pack
or
-.I gzip,
+.IR gzip ,
and also on uncompressed files.
If a file does not exist,
.I zmore
@@ -33,9 +34,9 @@ and to determine the default window size.
On a terminal capable of displaying 24 lines,
the default window size is 22 lines.
To use a pager other than the default
-.I more,
+.IR more ,
set environment variable PAGER to the name of the desired program, such as
-.I less.
+.IR less .
.PP
Other sequences which may be typed when
.I zmore
@@ -120,7 +121,7 @@ commands.
If the standard output is not a teletype, then
.I zmore
acts just like
-.I zcat,
+.IR zcat ,
except that a header is printed before each file
if there is more than one file.
.SH FILES
--
1.7.11.7
