2016-04-26  Jim Meyering  <meyering@fb.com>

	version 1.8
	* NEWS: Record release date.

	gnulib: update to latest

2016-04-19  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: simplify by closing ourselves
	This simplifies the previous fix, by avoiding the use of the
	closein module.  That module was problematic, as gzip normally
	does not use stdio for output and never uses it for input.
	Also, it is a heavyweight module, as it drags many files into lib
	(c-ctype.c, c-ctype.h, closein.c, closein.h, closeout.c, closeout.h,
	close-stream.c, close-stream.h, config.charset, c-strcasecmp.c,
	c-strcaseeq.h, c-strcase.h, c-strncasecmp.c, fpending.c, fpending.h,
	freadahead.c, freadahead.h, localcharset.c, localcharset.h, mbrtowc.c,
	mbsinit.c, quotearg.c, quotearg.h, quote.h, ref-add.sin, ref-del.sin,
	streq.h, wctype-h.c, wctype.in.h) and into m4 (closein.m4, closeout.m4,
	close-stream.m4, codeset.m4, configmake.m4, fpending.m4, freadahead.m4,
	glibc21.m4, localcharset.m4, locale-fr.m4, locale-ja.m4, locale-zh.m4,
	mbrtowc.m4, mbsinit.m4, mbstate_t.m4, quotearg.m4, wctype_h.m4),
	and these files are thus no longer needed.
	* bootstrap.conf (gnulib_modules): Remove closein.
	* gzip.c: Don't include closein.h.
	(stdin_was_read): New static var.
	(main): Don't use close_stdin.
	Invoke finish_out to exit after outputting via stdio's stdout.
	Close stdin after reading it.
	Restore previous way of closing stdout.
	(treat_stdin): Record that stdin was read.
	(finish_out): New function.

	gzip: fix bug with -l output to pipes
	Problem reported by Christian Franke via Eric Blake in:
	http://bugs.gnu.org/23314
	* NEWS: Mention this.
	* gzip.c (main): Do not close stdout twice when given -l.
	Instead, -l now just fflushes stdout, so that fdatasync
	can synchronize it if --synchronize is also specified.
	* tests/list: New test case.
	* tests/Makefile.am (TESTS): Add it.

2016-03-28  Paul Eggert  <eggert@cs.ucla.edu>

	Port to Oracle Solaris Studio 12.4
	Problem reported by Kiyoshi KANAZAWA in: http://bugs.gnu.org/23133
	* NEWS: Document this.
	* configure.ac (ASMV): Do not define if NO_ASM is
	anywhere in DEFS; it doesn't need to be surrounded by white space.
	* lib/match.c: Do not use x86 version if __x86_64__ is defined.

2016-03-27  Jim Meyering  <meyering@fb.com>

	maint: post-release administrivia
	* NEWS: Add header line for next release.
	* .prev-version: Record previous version.
	* cfg.mk (old_NEWS_hash): Auto-update.

	version 1.7
	* NEWS: Record release date.

2016-03-26  Paul Eggert  <eggert@cs.ucla.edu>

	Port to NetBSD 7.0
	Problem reported by Assaf Gordon in: http://bugs.gnu.org/23107#13
	* gzexe.in, zdiff.in, zgrep.in: Don't rely on mktemp -t,
	as it has a different meaning in NetBSD.

	* tests/init.sh: Sync from Gnulib.

	Port to Alpine Linux which uses Busybox
	* Makefile.am (check-local): Use plain diff rather than

2016-03-24  Jim Meyering  <meyering@fb.com>

	gzip: also honor GZIP=--rsyncable
	* gzip.c (main): Also accept --rsyncable when it is specified
	via the GZIP environment variable.
	I noticed this when gzip's "make dist" failed because maint.mk
	detected that gzip now honors --rsyncable, yet when it set GZIP_ENV
	to include that, and that propagated via automake-generated code
	to the GZIP setting used in the "make dist" rule, there, it was not
	honored, and caused "make dist" to fail.

2016-03-21  Paul Eggert  <eggert@cs.ucla.edu>

	Fix typo in previous patch

	Port to Solaris 11 /bin/sh
	* m4/shell.m4 (AC_PROG_SHELL): Reject Solaris 11 /bin/sh.
	A problem was reported by Nelson H. F. Beebe for OpenIndiana.
	I reproduced a problem with different symptoms on Solaris 11.
	Switching to Bash fixed it, and I hope this fixes it for
	OpenIndiana too, since both problems appear to be shell-related.

2016-03-18  Paul Eggert  <eggert@cs.ucla.edu>

	zgrep: with -f SPECIAL, read SPECIAL just once
	Problem reported by Fulvio Scapin in: http://bugs.gnu.org/22945
	* NEWS: Document this.
	* tests/zgrep-f: Add a test.
	Adjust a test to cover the case of more than one line in -f's input.
	* zgrep.in (with_filename): With -f FILE, if FILE is stdin or not
	a regular file, copy it into a temporary and use the temporary.

2016-03-15  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: port to AIX 7.1 + xlc V12.1
	* inflate.c, unlzw.c, util.c: Include tailor.h after including any
	system include file that might in turn include signal.h for the
	first time, so that SIGPIPE is not #defined to 0 prematurely,
	which clashes with signal.h's SIGPIPE.

2016-03-15  Jim Meyering  <meyering@fb.com>

	gnulib: update to latest

	maint: don't ignore gitlog-to-changelog failure
	* Makefile.am (gen-ChangeLog): Don't ignore failure of
	gitlog-to-changelog. This syncs to coreutils' copy of this rule.

2016-03-06  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: pacify clang
	* gzip.c (do_list): Use 2D array of char for month abbreviations,
	as this is clearer anyway, and it pacifies Clang.  Problem reported
	by Assaf Gordon in: http://bugs.gnu.org/22900#40

2016-03-06  Jim Meyering  <meyering@fb.com>

	tests: port to systems for which ":" is not the PATH separator
	* Makefile.am (new_path): New variable.
	(check-local): Use $(PATH_SEPARATOR) rather than a literal ":",
	to avoid "make syntax-check" failure.

2016-03-06  Paul Eggert  <eggert@cs.ucla.edu>

	doc: minor --rsyncable doc fixes
	* doc/gzip.texi (Sample): Mention --rsyncable.
	* gzip.c (help): Sort and do not capitalize the new --rsyncable
	help string.

	gzip: minor zgrep cleanup
	* zgrep.in: Simplify previous change.

	gzip: port zgrep to Solaris 11.2
	Problem reported by Assaf Gordon in: http://bugs.gnu.org/22900#11
	* zgrep.in: Port to Solaris 11.2 /bin/sh (ksh 93u 2011-02-08),
	where $? is 256+SIG when a process was killed with signal SIG, and
	where 'exit 257' is equivalent to 'exit 1'.  Apparently some other
	sh implementations use 256+128+SIG.  So, instead of using plain
	'exit $?', use the equivalent of 'exit ((128 * (128 <= $?)) + $? %
	128)' within the script, and use the equivalent of 'kill -$($? %
	128)' at the top level if the exit status is 128 or more.

	gzip: remove --__bindir
	* NEWS: Document this.
	* gzexe.in, gunzip.in, zcat.in, zcmp.in, zdiff.in, zegrep.in:
	* zfgrep.in, zforce.in, zgrep.in, zless.in, zmore.in, znew.in:
	Remove support for undocumented --__bindir option.  Callers can
	set PATH instead; that's less error-prone.  This fixes some
	'make check' failures on my Solaris 11 box, which occurred
	because the test scripts were mistakenly testing the installed
	gzip rather than the gzip in the working directory.
	* Makefile.am (.in): Don't replace bindir.
	(check-local): Set PATH instead of using --__bindir.
	* tests/help-version (gunzip_setuphelp, gzexe_setuphelp)
	(zcat_setuphelp, zcmp_setuphelp, zdiff_setuphelp)
	(zegrep_setuphelp, zfgrep_setuphelp, zforce_setuphelp)
	(zgrep_setuphelp, zless_setuphelp, zmore_setuphelp)
	(znew_setuphelp): Remove.  All uses removed.
	(lbracket_setup): Default args to empty.

2016-03-04  Jim Meyering  <meyering@fb.com>

	tests: fix "make check" failure on AIX 7.1
	* tests/Makefile.am (TESTS_ENVIRONMENT): Modernize:
	remove unused shell_or_perl_ function, and use an
	export_with_values function as grep does, to remove
	a lot of duplication.
	Reported by Assaf Gordon in http://debbugs.gnu.org/22900

2016-03-02  Rusty Russell  <rusty@rustcorp.com.au>

	gzip: support the --rsyncable option
	* deflate.c: Include verify.h.
	(RSYNC_WIN, RSYNC_SUM_MATCH): Define.
	(rsync_sum, rsync_chunk_end): Declare file-scoped globals.
	(lm_init): Initialize globals.
	(fill_window): Update rsync_chunk_end.
	(rsync_roll): New function.
	(RSYNC_ROLL): New macro.
	(FLUSH_BLOCK): Update for new "pad" parameter.
	(deflate_fast): Use RSYNC_ROLL and flush/pad.
	(deflate): Likewise.
	* trees.c (flush_block): Add "pad" parameter.
	* gzip.c (rsync): New global.
	(RSYNCABLE_OPTION, longopts, help): Add the option.
	(main): Set the new global.
	* gzip.h (rsync): Declare new global.
	(flush_block): Update prototype.
	* doc/gzip.texi: Document it.
	* gzip.1: Likewise.
	* bootstrap.conf: Use verify module.
	* NEWS (New feature): Mention it.
	* Makefile.am (check-local): Add tests and use AM_V__* command-
	hiding opions. Reported against Debian here:
	https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=118118

2016-02-28  Jim Meyering  <meyering@fb.com>

	maint: dist-check.mk: remove .deps dirs before comparing
	"make distcheck" with automake-from-trunk would fail like this:
	  ...
	  Only in /gz/tests/torture/gzip/test/gzip-1.6.42-9d47.old: .deps
	  Only in /gz/tests/torture/gzip/test/gzip-1.6.42-9d47.old/lib: .deps
	  Only in /gz/tests/torture/gzip/test/gzip-1.6.42-9d47.old/lib/glthread: .deps
	* dist-check.mk (my-distcheck): Remove all .deps directories before
	comparing the two hierarchies.

2016-02-28  Paul Eggert  <eggert@cs.ucla.edu>

	misc: update --version copyright
	* gunzip.in, gzexe.in, zcat.in, zdiff.in, zforce.in, zgrep.in:
	* zless.in, zmore.in, znew.in: Update copyright year in --version
	output to 2016.

	gzip: new option --synchronous
	This follows up on the earlier patch to avoid data loss near the
	system crashes.  It makes the new behavior optional, with the
	default off.  See: http://bugs.gnu.org/22768
	* NEWS, doc/gzip.texi (Sample, Invoking gzip), gunzip.in (usage):
	* gzip.1, zcat.in (usage):
	Document this.
	* gzip.c (synchronous): New static var.
	(SYNCHRONOUS_OPTION): New constant.
	(longopts, help, main, treat_file): Add support for --synchronous.

	gzip: use constants, not fileno
	* gzip.c (main, treat_stdin, treat_file, get_method)
	(check_ofname): Prefer STDIN_FILENO to fileno (stdin),
	and similarly for STDOUT_FILENO.

	gzip: fdatasync output dir before unlinking
	This follows up on the earlier patch to avoid data loss near
	the system crashes.  See: http://bugs.gnu.org/22768
	* bootstrap.conf (gnulib_modules): Add dirname-lgpl, fdatasync,
	openat-safer, unistd-safer, unlinkat.
	* gzip.c: Include stddef.h, dirname.h.
	Include fcntl--.h instead of fcntl-safer.h.
	(RW_USER): Remove; no longer needed.
	(dfname, dfd): New static vars.
	(dot): New static const.
	(atdir_eq, atdir_set): New functions.
	(treat_file): Also fdatasync the output directory, if !keep.
	(treat_file, create_outfile, open_and_stat):
	Use dir fd for unlinkat and openat, if possible.
	(open_and_stat): Omit mode argument, since it was always the
	same.  All callers changed.
	* lib/.gitignore, m4/.gitignore: Add new gnulib files.
	* tailor.h (PROTO, NO_STDIN_FSTAT, OPEN): Remove.  Remove MACOS
	section, as this stuff would not work anyway now, and circa 2001
	Apple stopped supporting Mac OS 9 and earlier.
	* zip.c: Do not include unistd.h and fcntl.h, as this file does
	not directly use any symbols defined by those headers.

2016-02-22  Paul Eggert  <eggert@cs.ucla.edu>

	fsync output file before closing
	Problem reported by Yanyan Jiang 蒋炎岩 in: http://bugs.gnu.org/22768
	* NEWS: Document this.
	* bootstrap.conf (gnulib_modules): Add fsync.
	* gzip.c (treat_file): Call fsync just before closing the output.
	* lib/.gitignore, m4/.gitignore: Add fsync-related gnulib files.

2016-01-22  Jason Leschnik  <jason@leschnik.me>

	doc: correct a diagnostic in man page to match actual
	* gzip.1: s/no change/unchanged/
	This addresses http://debbugs.gnu.org/22413

2016-01-01  Jim Meyering  <meyering@fb.com>

	maint: update copyright year, bootstrap, init.sh
	Run "make update-copyright" and then...

	* gzip.c: Transform the copyright notice via s/2015/2016/.
	* gnulib: Update to latest.
	* tests/init.sh: Update from gnulib.
	* bootstrap: Likewise.

2015-11-01  Jim Meyering  <meyering@fb.com>

	maint: avoid three warnings from the very latest gcc-built-from-git
	* unzip.c (unzip): Correct two format strings to match the types of the corresponding arguments.
	* unlzw.c (unlzw): Cast an "int" to unsigned to match expected type of %x.

2015-08-24  Jim Meyering  <meyering@fb.com>

	maint: adjust copyright notices in *.in files to be consistent
	The copyright year ranges in *.in files were not being updated,
	because of a missing ", Inc." suffix.  Add that, run
	run "make udpate-copyright", and ensure 2010..2015 year
	ranges are covered.
	* gunzip.in: Update copyright notice and year ranges.
	* gzexe.in: Likewise.
	* zcat.in: Likewise.
	* zdiff.in: Likewise.
	* zforce.in: Likewise.
	* zgrep.in: Likewise.
	* zless.in: Likewise.
	* zmore.in: Likewise.
	* znew.in: Likewise.

2015-08-24  Jim Meyering  <meyering@fb.com>

	build: avoid -Wshift-negative-value warning
	Configured with --enable-gcc-warnings, a gcc-6.x build would fail with this:

	  gzip.c:118:32: error: left shift of negative value
	   #define OFF_T_MIN (~ (off_t) 0 << (sizeof (off_t) * CHAR_BIT - 1))

	* gzip.c [OFF_T_MAX]: Define in terms of TYPE_MAXIMUM, not OFF_T_MIN.
	[OFF_T_MIN]: Remove now-unused definition.
	Include "intprops.h" for definiton of TYPE_MAXIMUM.
	* bootstrap.conf (gnulib_modules): Add intprops.

2015-07-30  Jim Meyering  <meyering@fb.com>

	maint: remove dead code
	This package has not been compilable with -DCRYPT
	since commit v1.4-82-g9d1b943.  Remove final vestiges.
	* bits.c (copy_block) [CRYPT]: Remove #ifdef'd code.
	* inflate.c (NEXTBYTE) [CRYPT]: Likewise.
	Prompted by a report from Flávio Medeiros
	that HEADER and T might be used uninitialized.

2015-03-17  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: make the GZIP env var obsolescent
	* NEWS, gzip.1:
	* doc/gzip.texi (Environment, Tapes): Document this.
	* gzip.c (args): Remove static var; no longer needed now that
	'main' frees it.  All uses removed.
	(ENV_OPTION, shortopts): New constants.
	(main): Warn about nontrivial uses of GZIP.  Reject dangerous uses.
	* tests/gzip-env: New test case.
	* tests/Makefile.am (TESTS): Add it.
	* util.c (add_envopt): Create new vector instead of adding to old
	one.  Only use changed.

2015-03-13  Paul Eggert  <eggert@cs.ucla.edu>

	maint: adjust to recent gnulib
	* doc/.gitignore: Add gendocs_template_min.
	* lib/.gitignore: Add assure.h.

2015-02-08  Jim Meyering  <meyering@fb.com>

	maint: ensure that --version's copyright date is current
	* cfg.mk (sc_gzip_copyright_check): Ensure we keep this copyright
	year number up to date.  Reported by Paul Eggert.
	* gzip.c (license_msg): Include only the current year number,
	as is done in nearly every other program.

	gnulib: update to latest

2015-01-01  Jim Meyering  <meyering@fb.com>

	maint: update copyright year ranges to include 2015; update gnulib

2014-11-10  Jim Meyering  <meyering@fb.com>

	maint: move new NEWS entry into block for upcoming release
	* NEWS: Move the latest NEWS entry from the block for gzip-1.6
	into the block for the upcoming release.

2014-11-10  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: adjust -v output when -k is also specified
	Problem reported by Eric Benoit in: http://bugs.gnu.org/16401
	* gzip.c (treat_file): When keeping a file, don't say it's replaced.
	* NEWS: Document this.
	* tests/keep: Test this.

2014-11-10  Jim Meyering  <meyering@fb.com>

	maint: enable more syntax checks
	* cfg.mk (local-checks-to-skip): Remove several rule names from this
	list, thus enabling the corresponding checks.  To fix some, I made
	syntactic changes to source files.  In other cases, I exempted certain
	files from the checks.
	Add exemptions for these:
	  sc_prohibit_atoi_atof = ^(gzip|sample/sub)\.c$$
	  sc_space_tab = ^lib/match\.c$$
	  sc_useless_cpp_parens = ^(lib/match\.c|tailor\.h)$$
	* configure.ac: Add quotes to fix under-quoting.
	* deflate.c: Remove unnecessary cpp parentheses.
	* tests/Makefile.am (TEST_ENVIRONMENT): Remove space-before-TAB.
	* unlzw.c: Change some TABs to spaces.

	maint: avoid false positive match in check for double semicolon
	* cfg.mk (exclude_file_name_regexp--sc_prohibit_double_semicolon):
	Exempt the file, lib/match.c, from gnulib's new double-semicolon
	check.

	gnulib+bootstrap: update to latest
	* gnulib: Update the submodule.
	* bootstrap: Update from gnulib.

2014-10-10  Paul Eggert  <eggert@cs.ucla.edu>

	tests: use local dir for output
	Reported by Kiyoshi KANAZAWA in: http://bugs.gnu.org/18679
	* tests/unpack-invalid: Use local directory, not /tmp, for output.

2014-08-10  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: fix --suffix=z bug (Bug#18239)
	* gzip.c (get_suffix): Put --suffix string at the end
	of the list of suffixes if it is a suffix of one one them.
	* tests/z-suffix: New file.
	* tests/Makefile.am (TESTS): Add it.

2014-06-12  Paul Eggert  <eggert@cs.ucla.edu>

	zgrep: exit with status 0 if a file matches and there's no trouble
	Reported by Pavel Raiskup in: http://bugs.gnu.org/17760
	* zgrep.in (res): Treat exit status 0 to be greater than 1.
	Also, exit immediately on software configuration error.

2014-06-07  Paul Eggert  <eggert@cs.ucla.edu>

	doc: use UTF-8 in the manual
	* doc/gzip.texi: Switch to UTF-8 encoding.  Fix ASCIIisms.
	Don't use @sc; plain caps are fine for GNU manuals.

	maint: update .gitignore files
	* lib/.gitignore, m4/.gitignore: Adjust to match current sources.
	Also, sort.

2014-06-07  Jim Meyering  <meyering@fb.com>

	maint: udpate all copyright notices via "make update-copyright"

	maint: update copyright year range in gzip.texi
	* doc/gzip.texi: Update copyright date.

	maint: update gnulib to latest and adapt streamsavedir usage
	* gnulib: Update module to latest.
	* gzip.c (treat_dir): Gnulib's streamsavedir API has changed:
	call it with a new argument, SAVEDIR_SORT_NONE, to retain the
	preceding behavior.

2014-03-06  Paul Eggert  <eggert@cs.ucla.edu>

	zless: improve gzip failure checking, and port to new -V format
	Problem reported by Jaroslaw Weglinski, and LESSOPEN change
	suggested by Mark Nudelman, in: http://bugs.gnu.org/16951
	This doesn't fix bug 16951 entirely, as 'less' needs to be changed
	too, but it's a start.
	* zless.in (check_exit_status): New var.
	(LESSOPEN): Use it.
	(use_input_pipe_on_stdin): Adjust to output format on Fedora 20,
	where 'less -V' outputs "less 458 (POSIX regular expressions)"
	on the first line.

2013-10-24  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: fix permissions issue on Solaris-like systems
	I.e., on systems that let users give files away.
	* gzip.c (do_chown): New function.
	(copy_stat): Use it, to change the group, then the permissions,
	then the owner.  Idea suggested by Vladimir Marek in
	<http://bugs.gnu.org/15672#11>

2013-10-03  Paul Eggert  <eggert@cs.ucla.edu>

	znew: avoid denial-of-service issue
	Reported by Rich Burridge in <http://bugs.gnu.org/15522>.
	* znew.in: Rewrite to avoid the need for a temporary file in /tmp.
	That way, we avoid the need for set -C
	and worrying about denial of service.
	Use touch -r and chmod --reference rather than cpmod.
	Assume cp -p works, as it's now universal.
	Quote 'echo' args better, while we're at it.
	(warn, tmp, cpmod, cpmodarg): Remove.
	(GZIP): Unset, so that we needn't test for gzip extension.
	(ext): Now always '.gz'.
	* znew.1: Document the change of implementation assumptions.

2013-06-19  Paul Eggert  <eggert@cs.ucla.edu>

	Fix spelling typo in newly-added comment.

	tests: zgrep-signal race condition fix
	* tests/zgrep-signal: Check that Perl supports dup2.
	(exec_with_SIGPIPE_SIGDFL): Remove.
	(write_to_dangling_pipe): Simplify by moving more of it into Perl.
	Fix race condition, where subcommand writes to a pipe before the ":"
	command exits.  Problem reported by Thorsten Glaser in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-06/msg00028.html>.

2013-06-12  Paul Eggert  <eggert@cs.ucla.edu>

	zgrep: usage should say which grep options are not supported
	* zgrep.in (usage): Document which grep options are not supported.
	Problem reported by Liron Paryente in
	<http://lists.gnu.org/archive/html/bug-grep/2013-06/msg00005.html>.

2013-06-11  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: port util.c to Compaq C V6.5-303
	* util.c (crc_32_tab): Move definition to front, since this
	compiler doesn't allow declarations of static arrays with
	incomplete types.  Problem reported by Steven M. Schweda in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-06/msg00010.html>.

	tests: zgrep-context assumes grep knows context
	* tests/Makefile.am (TESTS_ENVIRONMENT): Pass GREP too.
	* tests/zgrep-context: Check that the underlying grep supports
	context options.  Problem reported by Steven M. Schweda in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-06/msg00010.html>.

	doc: zgrep exit status, unsupported options
	* zgrep.1 (EXIT STATUS, BUGS): New sections.
	Problem reported by Bdale Garbee in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-06/msg00007.html>.

	maint: port to platforms lacking SIGPIPE
	* tailor.h (SIGPIPE): Define to 0 if not defined.  This fixes a
	porting bug introduced as part of 2012-11-16 syntax-check cleanup.
	Problem reported by Bdale Garbee in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-06/msg00006.html>.

2013-06-09  Jim Meyering  <meyering@fb.com>

	maint: post-release administrivia
	* NEWS: Add header line for next release.
	* .prev-version: Record previous version.
	* cfg.mk (old_NEWS_hash): Auto-update.

	version 1.6
	* NEWS: Record release date.

	build: avoid automake warning that suggests use of subdir-objects
	* configure.ac (AM_INIT_AUTOMAKE): Use the subdir-objects option.

	build: avoid warning about deprecated use of automake's ACLOCAL_AMFLAGS
	* Makefile.am (ACLOCAL_AMFLAGS): Don't use this deprecated variable.
	* configure.ac: Do this instead: AC_CONFIG_MACRO_DIR([m4]).

	build: use more portable shell syntax in search of working shell
	* m4/shell.m4: Adjust sh/case syntax not to evoke a syntax
	error from Solaris 10's /bin/sh.

	build: update gnulib to latest, and bootstrap

2013-05-28  Jim Meyering  <meyering@fb.com>

	tests: exercise the new --keep option
	* tests/keep: New file.
	* tests/Makefile.am (TESTS): Add it.

2013-05-28  Rodrigo Campos  <rodrigo@sdfg.com.ar>

	gzip: add "--keep" option to retain (don't delete) input files
	gzip now accepts the --keep (-k) option, for consistency with tools
	like xz, lzip and bzip2.  With this option, gzip no longer removes
	named input files when compressing and decompressing.
	* doc/gzip.texi: Document it.
	* gzip.1: Likewise.
	* gunzip.in: Likewise.
	* NEWS: Likewise.
	* gzip.c: Add support for "--keep".

2013-04-15  Paul Eggert  <eggert@cs.ucla.edu>

	tests: redo patch for non-GNU gzip installed in /usr/local/bin
	Problem with previous patch reported by Antonio Diaz Diaz in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-04/msg00011.html>.
	* tests/help-version (gunzip_setuphelp, gzexe_setuphelp)
	(zcat_setuphelp, zcmp_setuphelp, zdiff_setuphelp)
	(zegrep_setuphelp, zfgrep_setuphelp, zforce_setuphelp)
	(zgrep_setuphelp, zless_setuphelp, zmore_setuphelp)
	(znew_setuphelp): New functions, used when testing even --help.
	(zdiff_setup, zcat_setup, znew_setup, zgrep_setup, gzexe_setup):
	Use gzip_setuphelp to set --__bindir.

2013-04-10  Paul Eggert  <eggert@cs.ucla.edu>

	tests: work even if non-GNU gzip is installed in /usr/local/bin
	Problem reported by Antonio Diaz Diaz in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-04/msg00004.html>.
	* tests/help-version (zdiff_setup, zcat_setup, znew_setup, zgrep_setup)
	(gzexe_setup): Pass --__bindir so that subsidiary programs are our
	own's, not /usr/local/bin's.  This requires using 'eval' on the result.
	(zcmp_setup, gunzip_setup, zmore_setup, zless_setup, zforce_setup)
	(zegrep_setup, zfgrep_setup): Invoke one of the other setup functions,
	to make the patterns more obvious and simplify future maintenance.
	* zcmp.in, zegrep.in, zfgrep.in: Pass __bindir to subsidiary program.

	maint: adjust to Gnulib, Automake changes
	* .gitignore: Add *.trs.
	* lib/.gitignore: Add unused-parameter.h.

	tests: port to Solaris 10 /bin/sh
	* tests/Makefile.am (TESTS_ENVIRONMENT):
	Use "FOO=val; export FOO" rather than "export FOO=val",
	as the latter form doesn't work with Solaris /bin/sh.

2013-02-25  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: port to DMF file systems
	* util.c (read_buffer): When reading a file with O_NONBLOCK, if
	the read fails with errno==EAGAIN, clear O_NONBLOCK and try again.
	Problem reported by Vitezslav Cizek in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-02/msg00030.html>.

2013-02-05  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: fix bug where you say "n" and gzip acts as if you said "y"
	Problem reported for GCC 4.7 x86-64 -O2 by Allan McRae in
	<http://lists.gnu.org/archive/html/bug-gzip/2013-02/msg00000.html>.
	* NEWS: Document this.  Use consistent format in earlier note.
	* gzip.c: Include yesno.h.
	* gzip.h (yesno): Remove decl; that's yesno.h's job.

2013-01-06  Paul Eggert  <eggert@cs.ucla.edu>

	maint: adjust to Gnulib changes
	* lib/.gitignore: Add glthread, math.c, unistd.c, wctype-h.c.
	* m4/.gitignore: Remove inline.m4.

2013-01-04  Jim Meyering  <jim@meyering.net>

	maint: update all copyright year number ranges
	Run "make update-copyright".

	build: update gnulib submodule to latest

2012-12-10  Paul Eggert  <eggert@cs.ucla.edu>

	diagnose unexpected EOF and zero lengths in packed data
	Problem reported by Aki Helin.
	* NEWS: Mention Aki's reports.
	* tests/unpack-invalid: New file,
	with test data suggested by Aki.
	* tests/Makefile.am (TESTS): Add it.
	* unpack.c (read_byte): New function.
	(look_bits, read_tree): Use it.
	(read_tree): Check against zero bit length Huffman code.

	gzip: diagnose invalid code in packed data
	* unpack.c (unpack): When encountering a code out of range, report
	it and fail rather than charging ahead with randomish output.
	Problem reported by Aki Helin.

2012-11-16  Jim Meyering  <jim@meyering.net>

	maint: avoid new syntax-check failures
	* cfg.mk (_gl_TS_unmarked_extern_vars): Append nice_match, to avoid
	false-positive syntax-check failure on i686.
	* gzip.c (SIGPIPE): Remove definition.  Now always provided via gnulib.
	* lib/.gitignore: xsize.c, added by gnulib-tool.

2012-11-16  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: fix debugging/porting typo
	* unlzw.c (unlzw) [DEBUG]: Don't assume 'long' can be printed with %d.

	maint: merge build improvements from coreutils
	* configure.ac: Invoke gl_ASSERT_NO_GNULIB_POSIXCHECK.
	(--enable-gcc-warnings): Change help message.
	(gl_GCC_VERSION_IFELSE): New macro.
	Do not omit -Wunused-macros for main code.
	Adjust other -W options as per coreutils.
	* lib/Makefile.am (AM_CFLAGS): Use GNULIB_WARN_CFLAGS, not WARN_CFLAGS.
	* unlzw.c (REGISTERS, REG1, REG2, ..., REG16): Remove.
	All uses removed.  These provoked -Wunused-macros warnings.
	This sort of fiddling with registers hasn't been needed for years.

	build: update gnulib submodule to latest

	maint: port to platforms lacking SIGPIPE
	* gzip.c (SIGPIPE): Define to 0 if not already defined.

	doc: bring up to date and fix troff typos
	* 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.

2012-10-24  Paul Eggert  <eggert@cs.ucla.edu>

	tests: exercise the grep -e portability fix
	Remove workaround for Solaris, since the bug should be fixed now.
	Suggested by Petr Sumbera in
	<http://lists.gnu.org/archive/html/bug-gzip/2012-10/msg00005.html>.
	* tests/zgrep-context, tests/zgrep-f: All uses removed.
	* tests/init.cfg (require_POSIX_grep_): Remove.

2012-10-23  Eric Blake  <eblake@redhat.com>

	build: default to --enable-gcc-warnings in a git tree
	Anyone building from cloned sources can be assumed to have a new
	enough environment, such that enabling gcc warnings by default will
	be useful.  Tarballs still default to no warnings, and the default
	can still be overridden with --disable-gcc-warnings.
	* configure.ac (gl_gcc_warnings): Set default based on environment.

2012-10-20  Paul Eggert  <eggert@cs.ucla.edu>

	zgrep: do not assume standard 'grep' has -e
	On Solaris 11, /usr/bin/grep -e does not work.
	Problem reported by Petr Sumbera in
	<http://lists.gnu.org/archive/html/bug-gzip/2012-10/msg00003.html>.
	* Makefile.am (.in): Substitute @GREP@.
	* configure.ac (AC_PROG_GREP): Invoke.
	* zgrep.in (grep): Use @GREP@.

2012-08-14  Paul Eggert  <eggert@cs.ucla.edu>

	zgrep: do not assume GNU expr
	* zgrep.in: Do not assume '\+' has the GNU behavior in the BRE
	given to 'expr', as POSIX does not guarantee that.  Come to think
	of it, use a shell pattern rather than 'expr', as this is more
	efficient.

2012-08-08  Jim Meyering  <meyering@redhat.com>

	tests: exercise the just-fixed part of zgrep
	* tests/zgrep-context: New file.
	* tests/Makefile.am (TESTS): Add it.

2012-08-08  Jim Meyering  <meyering@redhat.com>

	zgrep: handle a multi-digit context option like -15
	* zgrep.in: Do not malfunction when given an option like -15.
	Before, it could end up treating the pattern as a file name:

	  $ echo x | gzip | zgrep -15 x
	  gzip: x.gz: No such file or directory

	* NEWS (Bug fixes): Mention it.
	Reported by Dan Bloch via Thomas Bushnell in
	https://bugs.launchpad.net/bugs/1032831

2012-08-07  Jim Meyering  <meyering@redhat.com>

	build: update gnulib, bootstrap and init.sh

	maint: fix misspellings in old ChangeLog and NEWS
	* ChangeLog-2007: s/Supress/Suppress/
	* NEWS: Likewise.
	* cfg.mk (old_NEWS_hash): Update to match typo fix.

2012-06-19  Paul Eggert  <eggert@cs.ucla.edu>

	zmore: rewrite to fix bugs and assume POSIX
	Problem reported for Solaris 9 by Daniel in
	<http://lists.gnu.org/archive/html/bug-gzip/2012-06/msg00007.html>.
	Rather than figure out what exactly went wrong in Solaris 9
	it was easier to rip out all the buggy compatibility and stty cruft.
	* zmore.in: Don't use stty or trap; simply pipe the output to 'more'
	and let it deal with signals and terminal control.
	Use printf, not 'echo', to avoid problems with backslashes.
	Don't assume ANS is not 's' in the environment.
	Use a 'more'-style header instead of rolling our own style.
	Paginate the header, too; the old behavior lost the header.
	* NEWS, zmore.1: Document this.

2012-06-17  Jim Meyering  <meyering@redhat.com>

	maint: add .mailmap
	* .mailmap: New file.  Unify two spellings of Paul's name,
	to make git log output slightly cleaner.

	maint: post-release administrivia
	* NEWS: Add header line for next release.
	* .prev-version: Record previous version.
	* cfg.mk (old_NEWS_hash): Auto-update.

	version 1.5
	* NEWS: Record release date.

	build: update gnulib for fixed maint.mk

	build: update gnulib submodule; bootstrap and init.sh, too
	* cfg.mk: Exempt crufty tailor.h from its use of "#define off_t...".
	* .gitignore, m4/.gitignore: Update semi-automatically (via bootstrap).

2012-04-24  Paul Eggert  <eggert@cs.ucla.edu>

	doc: document -rf change
	* NEWS: Document the ZFS fix.

	gzip: remove CLOSEDIR
	* gzip.c (CLOSEDIR): Remove; no longer used.

	gzip: port gzip -rf to ZFS
	Problem reported privately by Rich Burridge.
	* bootstrap.conf: Add savedir.
	* gzip.c: Include <savedir.h>.
	(_D_EXACT_NAMELEN): Remove.
	(treat_dir): Use savedir rather than reading directory entries one
	at a time, to avoid revisiting an already-compressed file when using
	ZFS and the -rf flags are specified.
	* lib/.gitignore, m4/.gitignore: Ignore savedir-related files.

2012-03-18  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: fix nondeterministic compression results
	Reported by Jakub Wilk in <http://bugs.debian.org/647522>.
	* deflate.c (fill_window): Don't let garbage pollute the dictionary.

2012-01-11  Jim Meyering  <meyering@redhat.com>

	tests: make all test scripts executable; work with automake-1.12
	* tests/Makefile.am (TESTS_ENVIRONMENT): Adapt to work with upcoming
	automake-1.12.
	* tests/mixed: Make executable.
	* tests/zgrep-f: Likewise.
	* tests/zgrep-signal: Likewise.
	* tests/znew-k: Likewise.

	build: accommodate newer bootstrap from gnulib
	* bootstrap.conf (gnulib_tool_option_extras): Add both --symlink
	and --makefile-name=gnulib.mk.
	* bootstrap: Update from gnulib.
	* tests/init.sh: Update from gnulib.
	* lib/Makefile.am: Initialize all of the following so that
	generated code in gnulib.mk may use += to append to those variables:
	AM_CFLAGS, BUILT_SOURCES, CLEANFILES, EXTRA_DIST, MOSTLYCLEANDIRS,
	MOSTLYCLEANFILES, SUFFIXES, noinst_LTLIBRARIES.

2012-01-01  Jim Meyering  <meyering@redhat.com>

	maint: update all copyright year number ranges
	Run "make update-copyright".

2011-12-21  Paul Eggert  <eggert@cs.ucla.edu>

	zless: decompress stdin too, if less 429 or later
	* zless.in: Use LESSOPEN |- feature of less 429 or later.
	Problem reported by Jeroen Roovers via Mike Frysinger in
	<http://lists.gnu.org/archive/html/bug-gzip/2011-12/msg00006.html>.

2011-11-29  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest

	build: accommodate gnulib's new warnings with --enable-gcc-warnings
	* configure.ac (WERROR_CFLAGS): Disable two new warnings:
	-Wno-format-nonliteral, -Wno-unsuffixed-float-constants.
	* gzip.h (bi_reverse): Declare with _GL_ATTRIBUTE_CONST.
	(gzip_base_name): Declare with _GL_ATTRIBUTE_PURE.

2011-11-29  Jim Meyering  <meyering@redhat.com>

	tests: use "compare exp out", not "compare out exp"
	Likewise, when an empty file is expected, use "compare /dev/null out",
	not "compare out /dev/null". I.e., specify the expected/desired contents
	via the first file name.  Prompted by a suggestion from Bruno Haible
	in http://thread.gmane.org/gmane.comp.gnu.grep.bugs/4020/focus=29154

	Run these commands:

	    git grep -l -E 'compare [^ ]+ exp' \
	      |xargs perl -pi -e 's/\b(compare) (\S+) (exp\S*)/$1 $3 $2/'
	    git grep -l -E 'compare [^ ]+ /dev/null' \
	      |xargs perl -pi -e 's,\b(compare) (\S+) (/dev/null),$1 $3 $2,'

2011-11-05  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest

2011-11-02  Paul Eggert  <eggert@cs.ucla.edu>

	* tests/zgrep-signal: Don't assume exit status 141 on PIPE signal.
	Problem reported by Eric Blake in
	<http://lists.gnu.org/archive/html/bug-gzip/2011-11/msg00007.html>.

	* tests/zgrep-signal: Use perl instead of a nonportable shell trap.
	Problem reported by Eric Blake in
	<http://lists.gnu.org/archive/html/bug-gzip/2011-11/msg00005.html>.

	* tests/zgrep-signal: Test for Fedora 15 signal bug.
	Also, don't assume that SIGPIPE is SIG_DFL on entry.

2011-11-02  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest

	tests: mixed: correct size-enumeration logic
	* tests/mixed (sizes): Fix misplaced "&& break" that made us test
	only with a size of 0, rather than all sizes in 0..64.

	maint: avoid "make syntax-check" failure
	* gzip.c (treat_stdin): Indent with spaces, not TABs.

2011-11-02  Paul Eggert  <eggert@cs.ucla.edu>

	* gzip.c (treat_stdin): If quiet, be quiet with plain gzip -q.
	Problem reported by Michaël Guitton in
	<http://lists.gnu.org/archive/html/bug-gzip/2011-11/msg00000.html>.

2011-08-10  Jim Meyering  <meyering@redhat.com>

	maint: remove amiga, atari, msdos, nt, os2, vms sub-directories,
	and all files therein.  This was proposed months prior, and no
	one objected.
	* amiga/Makefile.gcc: Remove file.
	* amiga/Makefile.sasc: Likewise.
	* amiga/match.a: Likewise.
	* amiga/tailor.c: Likewise.
	* amiga/utime.h: Likewise.
	* atari/Makefile.st: Likewise.
	* msdos/Makefile.bor: Likewise.
	* msdos/Makefile.djg: Likewise.
	* msdos/Makefile.msc: Likewise.
	* msdos/doturboc.bat: Likewise.
	* msdos/gzip.prj: Likewise.
	* msdos/match.asm: Likewise.
	* msdos/tailor.c: Likewise.
	* nt/Makefile.nt: Likewise.
	* os2/Makefile.os2: Likewise.
	* os2/gzip.def: Likewise.
	* os2/gzip16.def: Likewise.
	* vms/Makefile.gcc: Likewise.
	* vms/Makefile.mms: Likewise.
	* vms/Makefile.vms: Likewise.
	* vms/Readme.vms: Likewise.
	* vms/gzip.hlp: Likewise.
	* vms/makegzip.com: Likewise.
	* vms/vms.c: Likewise.
	* Makefile.am (EXTRA_DIST): Remove those file names.

	build: use largefile module and update to latest gnulib
	* configure.ac: Remove AC_SYS_LARGEFILE, subsumed by ...
	* bootstrap.conf (gnulib_modules): ...this.  Use largefile module.
	* gnulib: Update to latest.

2011-07-12  Jim Meyering  <meyering@redhat.com>

	maint: update init.sh and bootstrap from gnulib
	* bootstrap: Update from gnulib.
	* tests/init.sh: Update from gnulib.

	maint: use gnulib's realloc-gnu and malloc-gnu modules
	* bootstrap.conf (gnulib_modules): Use realloc-gnu and malloc-gnu,
	rather than the now-deprecated realloc and malloc modules.

	build: update gnulib submodule to latest

2011-06-21  Paul Eggert  <eggert@cs.ucla.edu>

	* deflate.c: Export nice_match to assembler.
	(static_unless_ASMV): New macro.
	(nice_match): Use it.

2011-06-08  Jim Meyering  <meyering@redhat.com>

	build: fix "make syntax-check"
	* cfg.mk (_gl_TS_unmarked_extern_vars): Add good_match.

	build: avoid link failure: this time on i686 linux
	* deflate.c (good_match): Must not be static, since it may
	be used from lib/match.c.

2011-05-14  Jim Meyering  <meyering@redhat.com>

	build: avoid link failure on at least i386-FreeBSD7.2
	* deflate.c (match_start, prev_length, max_chain_length): Do not
	declare these as static.  On some types of system/arch, they are
	used via match_.s.
	* cfg.mk (_gl_TS_unmarked_extern_vars): Mark those three variables
	as known-extern: match_start, prev_length, max_chain_length.

2011-05-13  Jim Meyering  <meyering@redhat.com>

	avoid new build failure on a system without <crypt.h>
	* bits.c: Don't include "crypt.h", now that it's deleted.

	maint: use gnulib's new readme-release module
	* bootstrap.conf (gnulib_modules): Add readme-release.
	(bootstrap_epilogue): Add the recommended perl one-liner.
	* README-release: Remove file; it is now generated from gnulib.
	* .gitignore: Add it.

2011-05-09  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest

	maint: prepare for gnulib's new tight-scope syntax-check rule
	* cfg.mk (_gl_TS_dir): Define.
