2025-04-09  Jim Meyering  <meyering@meta.com>

	version 1.14
	* NEWS: Record release date.

2025-04-06  Jim Meyering  <meyering@meta.com>

	build: avoid test failure on systems lacking "more"
	On such systems, treat "more" as optional, just as we treat "less".
	If the primary program is not available, do not install zmore.
	Reported by Bruno Haible in http://debbugs.gnu.org/77563 and noticed
	on a 2025 x86_64 GNU/Hurd system.
	* configure.ac: Check for more/MORE just like we do for less/LESS.
	* tests/Makefile.am: Use the new variables.
	* NEWS: Mention it.

2025-03-27  Jim Meyering  <meyering@meta.com>

	maint: fix typos spotted by codespell
	Induced by running this:
	  printf '%s\n' Tye tye Ned bu nd > w
	  codespell -w --summary --count -Iw $(git ls-files|grep -v gnulib)
	Summary:
	cvignore      1
	declration    1
	endianess     1
	instad        1
	intall        2
	ouput         1
	reenabled     1
	repoducible   1
	uncompressible1
	* ChangeLog-2007: Fix typos.
	* NEWS: Likewise.
	* inflate.c: Likewise.
	* sample/sub.c: Likewise.
	* tests/reproducible: Likewise.
	Since the above changed NEWS, I must also do this:
	* cfg.mk (old_NEWS_hash): Update, to reflect recent NEWS correction.
	(exclude_file_name_regexp--sc_codespell): Ignore THANKS.
	(codespell_ignore_words_list): Exempt two false-positives.

2025-02-19  Paul Eggert  <eggert@cs.ucla.edu>

	Ignore GZIP envvar except for innocuous flags
	This is slimmed down from the originally proposed patch, which
	ignored GZIP entirely.  Thanks to Lasse Collin for thoughtful comments.
	* gzip.c (ENV_OPTION): Remove.  All uses removed.
	(main): Parse GZIP contents with error diagnostics disabled,
	and simply ignore invalid contents.  Ignore all options
	except -1 thru -9, --rsyncable, --synchronous.  Remove
	unnecessary longind local; all uses removed.
	* tests/gzip-env (GZIP): Adjust to match current behavior.
	Also test --rsyncable, --synchronous.

2025-02-10  Paul Eggert  <eggert@cs.ucla.edu>

	Fix THANKS typo

	gzip: use pclmul if available
	Suggested by Sam Russell (Bug#74192).
	* bootstrap.conf (gnulib_modules): Depend on crc-x86_64, not just crc.
	* NEWS, THANKS, lib/.gitignore, m4/.gitignore:
	Update accordingly.

	maint: update .gitignore
	* m4/.gitignore: Add init-package-version.m4.

2025-02-08  Jim Meyering  <meyering@meta.com>

	maint: continue writing base64-encoded checksums to announcement
	* cfg.mk (announce_gen_args): Set to --cksum-checksums.

2025-02-06  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: prefer static_assert to verify
	* bootstrap.conf (gnulib_modules): Replace verify with assert-h.
	* deflate.c: Do not include verify.h.
	Use C23-style static_assert rather than verify.

	gzip: better fix for s390 buffer flushes
	* dfltcc.c (dfltcc_inflate): The previous patch was incorrect, as
	fill_inbuf (0) will not call flush_outbuf which is needed here.
	Problem and fix reported by Eduard Stefes in
	<https://debbugs.gnu.org/cgi/bugreport.cgi?bug=75924#13>.
	Although this patch causes the hufts test to fail, that might be
	due to a different bug in the s390 code, so let’s leave that test
	alone for now.

2025-02-02  Jim Meyering  <meyering@meta.com>

	maint: fix mistake in preceding change
	* bootstrap.conf (gnulib_modules): The deprecated realloc-gnu module
	cannot be renamed to realloc-gnu-h (which doesn't exist), but rather
	to realloc-posix. Spotted by Collin Funk.

2025-02-01  Jim Meyering  <meyering@meta.com>

	build: update gnulib to latest; and update bootstrap

	maint: reflect gnulib module renamings
	* bootstrap.conf: Some gnulib modules are now deprecated in favor of
	new names with a "-h" suffix.  Induce this change with the following:
	  re='inttypes|realloc-gnu|sys_stat'
	  perl -pi -e 's{^('"$re"')$}{$1-h}' bootstrap.conf

2025-01-29  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: fix problem with s390 buffer flushes
	Problem reported by Eduard Stefes <https://bugs.gnu.org/74651>.
	* dfltcc.c (dfltcc_deflate): Flush output buffer if premature EOF.

2025-01-10  Lasse Collin  <lasse.collin@tukaani.org>

	tests: synchronous: new test
	* tests/synchronous: Test that --synchronous works. This
	failed with musl 1.2.5 before the Gnulib commit 0fb185b7cd5e
	("fcntl-h: port better to musl on GNU/Linux").
	* tests/Makefile.am (TESTS): Add it.

2025-01-10  Paul Eggert  <eggert@cs.ucla.edu>

	maint: update .gitignore
	* lib/.gitignore, m4/.gitignore: Update to match current Gnulib.

	build: update gnulib submodule to latest

2025-01-03  Jim Meyering  <meyering@meta.com>

	build: update gnulib to latest

2025-01-03  Jim Meyering  <meyering@meta.com>

	maint: update --version copyright dates
	* gunzip.in, gzexe.in, gzip.c, zcat.in, zcmp.in, zdiff.in, zforce.in,
	zgrep.in, zless.in, zmore.in, znew.in: Also update the --version copyright
	dates (while updated by update-copyright, those didn't satisfy syntax-check)
	by running this:

	grep -l 2024-2025 *.in gzip.c|xargs perl -pi -e 's/2024-2025/2025/'

2025-01-03  Jim Meyering  <meyering@meta.com>

	maint: update all copyright dates via "make update-copyright"

2024-12-13  Jim Meyering  <meyering@meta.com>

	gnulib: avoid the new gnulib-i18n module
	* bootstrap.conf (avoided_gnulib_modules): New variable.
	Use it to omit the gnulib-i18n module, since this package
	is not internationalized.

	build: update gnulib to latest; also update bootstrap

2024-11-02  Sam Russell  <sam.h.russell@gmail.com>

	maint: initialize MAINTAINERCLEANFILES
	* lib/Makefile.am (MAINTAINERCLEANFILES): Initialize to empty.
	Gnulib expects it to be set as it appends values to it, the recent
	upgrade to lib/crc.c modifies this and building fails if it isn't
	already set before gnulib.mk is included.

2024-10-17  Simon Josefsson  <simon@josefsson.org>

	maint: Drop unused sample/makecrc.c.

2024-09-22  Paul Eggert  <eggert@cs.ucla.edu>

	maint: ‘type’ → ‘command -v’
	POSIX says ‘type’ is an XSI extension, whereas ‘command -v’ is
	part of the base.  Problem reported by Clarence “Sparr” Risher in
	<https://bugs.gnu.org/73402>.
	* gzexe.in, tests/help-version, zdiff.in, zgrep.in:
	Use ‘command -v’, not ‘type’.

2024-09-11  Collin Funk  <collin.funk1@gmail.com>

	maint: update library names used by gnulib
	* Makefile.am (gzip_LDADD): Update library names according to Gnulib
	NEWS 2023-01-07.

2024-09-09  Jim Meyering  <meyering@meta.com>

	tests: reference: don't rely on od's -w option
	* tests/reference: Don't rely on od's -w option.
	Instead, use tr -d '\n' to join the output lines.
	Reported by Bruno Haible in https://bugs.gnu.org/73140

	maint: use gnulib's crc module in place of our own code
	* bootstrap.conf (gnulib_modules): Add crc.
	* util.c: Include "crc.h".
	(crc_32_tab): Delete. No longer used.
	(updcrc): Use gnulib's crc32_update.
	(crc): Initialize the global to 0, not 0xffffffffL.
	(setcrc, getcrc): Stop flipping bits. No longer needed.
	* lib/.gitignore: Add crc.c and crc.h, and sort.

	build: update gnulib to latest, for crc tweak

2024-09-08  Jim Meyering  <meyering@meta.com>

	build: update gnulib to latest
	* lib/.gitignore: add error.h

2024-09-08  Jim Meyering  <meyering@meta.com>

	maint: modernize see...licenses comments
	To accommodate a new syntax-check rule, ...
	Adjust copyright notices that suggested to write to an old
	Franklin Street address to reference the URL instead:

	  git grep -l 'if not, write' |xargs \
	  perl -0777 -pi -e 's{program; if not, write .*? USA\.}{program.  If not, see <https://www.gnu.org/licenses/>.}ms'

	Also, run this:
	  git grep -l 'License along$' | xargs \
	  perl -0777 -pi -e 's{License along\n# with}{License\n# along with}ms'

	to normalize a little more, changing comments like this:
	  You should have received a copy of the GNU General Public License along
	  with this program.  If not, see <https://www.gnu.org/licenses/>.

	to this:
	  You should have received a copy of the GNU General Public License
	  along with this program.  If not, see <https://www.gnu.org/licenses/>.

2024-09-08  Jim Meyering  <meyering@meta.com>

	tests: reference: new test
	* tests/reference: New test. Without this test, there
	was nothing to alert me to an error in the crc computation:
	each new CRC was different, but all newly-compressed files
	decompressed fine and had a valid (by the new check) CRC.
	* tests/Makefile.am (TESTS): Add it.
	Also move the "list-big" test to the front of the list, since
	it is the most costly: start it first. Useful in a parallel test.

	maint: remove duplicate <errno.h> include
	* util.c: Remove duplication inclusion of <errno.h>.

	maint: rename deflate and inflate to gzip_deflate and gzip_inflate
	In experimenting with zlib's CRC code, names like inflate
	and deflate would otherwise conflict.
	* gzip.h (gzip_deflate, deflate): Rename declarations.
	* deflate.c (gzip_deflate): Rename from deflate.
	* inflate.c (gzip_inflate): Rename from inflate. Update comment uses.
	* dfltcc.c (dfltcc_deflate, dfltcc_inflate): Update uses.
	* unzip.c (unzip): Update use.
	* zip.c (zip): Likewise.

2024-08-09  Collin Funk  <collin.funk1@gmail.com>

	maint: depend on Gnulib's limits-h
	* bootstrap.conf (gnulib_modules): Add limits-h.
	* gzip.c (CHAR_BIT): Remove definition.
	* unlzh.c: Include limits.h.
	(CHAR_BIT, UCHAR_MAX): Remove definitions.
	* util.c (CHAR_BIT): Remove definition.

	gzip: simplify printing of offsets using -l and -v
	* bootstrap.conf (gnulib_modules): Add inttypes.
	* gzip.c: Include inttypes.h.
	(do_list): Use printf instead of fprint_off.
	* gzip.h (fprint_off): Remove deceleration.
	* util.c (fprint_off): Remove function.

2024-07-24  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: reject suffixes containing '/'
	Problem reported by Alex Stumpf <https://bugs.gnu.org/72283>.
	* gzip.c (main): Diagnose suffixes containing '/', and exit.

2024-07-04  Jim Meyering  <meyering@meta.com>

	build: avoid GCC warnings from -Wmissing-variable-declarations
	* deflate.h: New file with extern declarations for deflate.c.
	* Makefile.am (noinst_HEADERS): Add it here.
	* deflate.c: Include deflate.h.

	build: avoid GCC warning from -Wmissing-variable-declarations
	* Makefile.am (version.c): Emit the directive to include version.h
	into this file.

	build: update gnulib to latest, and update bootstrap and .gitignore files

2024-07-04  Collin Funk  <collin.funk1@gmail.com>

	maint: import tests/init.sh from Gnulib during bootstrap
	* bootstrap.conf (bootstrap_post_import_hook): Use gnulib-tool
	--copy-file to import tests/init.sh.
	* tests/init.sh: Remove file.
	* .gitignore (/testsuite/init.sh): Add entry.

2024-05-11  Paul Eggert  <eggert@cs.ucla.edu>

	maint: update bootstrap and m4/.gitignore to latest Gnulib

	build: update gnulib to latest

2024-05-11  Bruno Haible  <bruno@clisp.org>  (tiny change)

	tests: Fix test failure on NetBSD when run as root.
	* tests/write-error: Also test whether the process is running under uid 0.

2024-02-19  Jim Meyering  <meyering@meta.com>

	maint: avoid syntax-check failure: use <>, not "" for system headers
	* gzip.c: Spell as <getopt.h> and hoist it to be with other system
	header includes.  Also remove duplicate inclusion of <errno.h>.

2024-01-15  Jim Meyering  <meyering@meta.com>

	build: update gnulib to latest

2024-01-08  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: fix -l bug with multimember files
	Problem reported by Antonio Diaz Diaz in:
	https://lists.gnu.org/r/bug-gzip/2024-01/msg00000.html
	* NEWS: Mention this.
	* gzip.c (treat_stdin, treat_file): Do not clear bytes_out.
	* tests/list: Test for the bug.
	* unpack.c (unpack):
	* unzip.c (unzip):
	Do not assume bytes_out is initially zero.

	maint: update .gitignore files

	maint: update bootstrap from Gnulib

	build: update gnulib submodule to latest

2024-01-08  Paul Eggert  <eggert@cs.ucla.edu>

	maint: update --version copyright dates
	* gunzip.in, gzexe.in, gzip.c, zcat.in, zcmp.in, zdiff.in, zforce.in,
	zgrep.in, zless.in, zmore.in, znew.in: Also update the --version copyright
	dates (those are not updated by update-copyright) by running this:

	git grep -l ' 2023 Free' | xargs perl -pi -e 's/ 2023 Free/ 2024 Free/'

2024-01-08  Paul Eggert  <eggert@cs.ucla.edu>

	maint: fix doc/fdl.texi copyright
	This file's copyright date was munged incorrectly a year ago.

	make update-copyright

	maint: add .x-update-copyright
	This should prevent unwanted copyright-year updating.

2023-10-23  Paul Eggert  <eggert@cs.ucla.edu>

	build: update gnulib submodule to latest

	maint: update .gitignore files

	maint: fix port to s390x
	Problem reported by Sarah-Julia Kriesch <https://bugs.gnu.org/66709>.
	* bootstrap.conf (gnulib_modules): Add alignasof.

2023-08-19  Jim Meyering  <meyering@meta.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 1.13
	* NEWS: Record release date.

	maint: remove use gnulib's deprecated stdalign module
	* bootstrap.conf (gnulib_modules): Remove deprecated stdalign.
	It was not directly used.

	build: update gnulib to latest; also update bootstrap and tests/init.sh

2023-06-24  Jim Meyering  <meyering@meta.com>

	build: update gnulib to latest

2023-06-24  Bruno Haible  <bruno@clisp.org>

	build: Ensure that makeinfo ≥ 6.8 checks the @menu structure.
	See <https://lists.gnu.org/archive/html/bug-texinfo/2023-06/msg00015.html>.

	* doc/Makefile.am (MAKEINFO): New variable.
	* cfg.mk (_makefile_at_at_check_exceptions): New variable.

2023-06-24  Jim Meyering  <meyering@fb.com>

	build: modernize bootstrap prerequsite tools
	Following Pádraig Brady's example from coreutils, ...
	* bootstrap.conf: Add an explicit requirement on m4.
	Add an explicit requirement on texi2pdf -- often packaged separately
	rather than with makeinfo -- its absence would otherwise induce a
	failure late in the build process.
	Also, add an xz requirement and a version for autopoint.

2023-06-16  Paul Eggert  <eggert@cs.ucla.edu>

	doc: minor tuneup of man page
	From suggestions by Bjarni Ingli Gislason (bug#64118).

2023-04-11  Bruno Haible  <bruno@clisp.org>

	tests: Fix a test failure.
	* tests/write-error: Make executable. Skip the test if we're running as root.

2023-04-07  Jim Meyering  <meyering@fb.com>

	gzip: improve a write-failure diagnostic
	* gzip.c (create_outfile): Call write_error, not progerror,
	so failure to open for writing gives a better diagnostic:
	  gzip: failed to write d/f.gz: Permission denied
	rather than this:
	  gzip: d/f.gz: Permission denied
	* tests/write-error: New file, to test for this.
	* tests/Makefile.am (TESTS): Add the file name.
	Reported in https://bugs.gnu.org/16876.

2023-04-07  Jim Meyering  <meyering@meta.com>

	build: update gnulib to latest

2023-02-04  Jim Meyering  <meyering@meta.com>

	maint: prefer https: to git:
	The idea is to defend against some adversary-in-the-middle attacks.
	Also prefer git.savannah.gnu.org over its shorter alias, git.sv.gnu.org
	to avoid a warning e.g., from git clone.
	Also, drop any final ".git" suffix on the resulting URIs.
	Inspired by Paul Eggert's nearly identical changes to coreutils.

2023-02-03  Paul Eggert  <eggert@cs.ucla.edu>

	zless: improve gzip failure checking
	* zless.in: Use --show-preproc-error if available.

	gzip: fix exit status on broken pipe
	Fix gzip to behave like cat etc. when outputting to a broken pipe:
	i.e., exit with nonzero status if SIGPIPE is ignored, and be
	terminated by SIGPIPE otherwise.
	* NEWS: Mention this.
	* gzip.c: Do not install signal handlers unless creating an output
	file, for which signal handlers are needed.  This avoids gzip
	having to deal with signal handlers when outputting to stdout.
	(exiting_signal): Remove.  All uses removed.
	(main): Do not install signal handlers at first.
	(create_outfile): Instead, install them only when needed.
	(finish_up_gzip): New function, which generalizes abort_gzip.
	(abort_gzip): Use it.
	* tests/pipe-output: New test.
	* tests/Makefile.am (TESTS): Add it.
	* util.c (EPIPE): Default to 0.
	(write_error): Just warn if it is a pipe error, and suppress that
	warning if quiet.  In any event exit with status 2 (warning),
	not status 1 (error).
	* zgrep.in: Treat gzip status 141 like status 2;
	it is a broken pipe either way.

	doc: document exit status
	* doc/gzip.texi: Document exit status.

2023-01-30  Bruno Haible  <bruno@clisp.org>

	Don't require 'rsync' as a prerequisite. It is no longer needed since 2018.
	* bootstrap.conf (buildreq): Remove rsync.

	Fix "make check" in a subdirectory (VPATH build).
	* Makefile.am (gzip.doc): Generate gzip.doc in the source directory, not in the
	build directory.

2023-01-10  Jim Meyering  <meyering@fb.com>

	maint: update --version copyright dates
	* gunzip.in, gzexe.in, gzip.c, zcat.in, zcmp.in, zdiff.in, zforce.in,
	zgrep.in, zless.in, zmore.in, znew.in: Also update the --version copyright
	dates (those are not updated by update-copyright) by running this:

	  grep -l ' 2022 Free'|xargs perl -pi -e 's/ 2022 Free/ 2023 Free/'

2023-01-01  Jim Meyering  <meyering@fb.com>

	build: update gnulib to latest

	maint: update copyright dates

2022-12-28  Jim Meyering  <meyering@fb.com>

	maint: avoid new sc_tight_scope syntax-check failure
	* cfg.mk (_gl_TS_extern): Allow a leading '_Noreturn ' on
	declarations like that of abort_gzip.

	maint: SPC-indent inflate.c
	* inflate.c: Indent with spaces, not TABs.

2022-12-27  Paul Eggert  <eggert@cs.ucla.edu>

	maint: update THANKS
	Add lines for each bug reporter and fix contributor for
	which there is a Bug# in the commit messages.
	Fix some accents and email addresses and sorting issues
	while we’re in the neighborhood.

2022-12-27  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: use strerror, not perror
	* bootstrap.conf (gnulib_modules): Use strerror, not perror.
	This removes dependencies on Gnulib’s ‘threadlib’ and ‘lock’ modules,
	and simplifies the mainline code.  Apparently the old code was written
	before strerror was universally supported; nowadays we can use Gnulib
	strerror instead.  All uses of perror changed to use strerror+fprintf.

	* gzip.h (WARN): Since this expands to a statement, wrap within
	‘do ... while (false)’ for the usual reasons.  Helpful now that
	calls to WARN are now simplified.

2022-12-27  Paul Eggert  <eggert@cs.ucla.edu>

	maint: link with $(LIB_FDATASYNC)
	* Makefile.am (gzip_LDADD): Add LIB_FDATASYNC as gnulib-tool suggests.
	It’s not likely to make much difference nowadays (does anybody still
	run Solaris 10 x86?) but it shouldn’t hurt to add it.

	maint: go back to single-file bootstrap
	I recently added this option to Gnulib, and it seems a better
	match for gzip as it means just one bootstrap-related file.
	* README-hacking: Document this.
	* bootstrap: Sync from gnulib/build-aux/bootstrap, not
	from gnulib/top/bootstrap.
	* autogen.sh, autopull.sh, bootstrap-funclib.sh: Remove.

	build: update gnulib submodule to latest

2022-12-26  Paul Eggert  <eggert@cs.ucla.edu>

	maint: more fallout from Gnulib sync
	* README-hacking: Improve wording.
	* autogen.sh, autopull.sh, bootstrap-funclib.sh: New files.

	maint: do not include stdbool.h, stdalign.h
	They are not needed in C23, which Gnulib now emulates.
	(We no longer worry about C89, since Gnulib doesn’t.)

2022-12-25  Paul Eggert  <eggert@cs.ucla.edu>

	maint: fix typo in previous patch

	maint: expand tabs in previous patch

	maint: sync to Gnulib bootstrap
	Suggested by Bruno Haible (Bug#56749).
	* README-hacking: Document this.
	* bootstrap: Sync from Gnulib by running
	'./bootstrap ./bootstrap --bootstrap-sync’.
	* bootstrap.conf: Do not mkdir build-aux, since bootstrap
	does that for us.
	(bootstrap_post_import_hook): Create the empty ChangeLog
	in this new function.

	maint: prefer https: to http:
	This also syncs COPYING from Gnulib and README-hacking from Coreutils.

	maint: port to gcc -std=c99 -Wstrict-prototypes
	This doesn’t fix any bugs, since the code is correct as-is on all
	C versions.  However, it pacifies gcc -std=c99 -Wstrict-prototypes,
	which complains about a function definition without arguments
	unless there’s a previous prototype with ‘(void)’.
	Most (but not all) of this patch merely reverts some recent
	changes to be more consistent when porting to C23.
	* dfltcc.c (is_dfltcc_enabled):
	* gzip.c (get_input_size_and_time):
	* inflate.c (inflate_stored, inflate_fixed, inflate_dynamic):
	* unpack.c (read_byte):

	gzip: port alignas usage to C23
	* gzip.c (BUFFER_ALIGNED): Do not depend on __alignas_is_defined
	as that has been removed from C23.

	gzip: local → static
	* gzip.h (local): Remove.  All uses replaced by ‘static’.
	Previously, the source code was inconsistent about using ‘local’
	vs ‘static’ even before the recent changes, and ‘local’ was
	more trouble than it was worth.

	maint: port function definitions to C23
	C23 does not allow K&R style function definitions.
	Use protyped definitions.  However, don't bother with (void) in
	function definitions since C23 prefers (); so prefer () to (void) as
	this will work with older compilers anyway.

	maint: stop using obsolete dosname module
	* bootstrap.conf (gnulib_modules): Replace dosname with filename.
	* gzip.c: Include filename.h, not dosname.h.
	* lib/.gitignore: Remove name of dosname.h.

	maint: stop using obsolete stdnoreturn module
	* bootstrap.conf (gnulib_modules): Remove stdnoreturn.
	* gzip.h: Do not include stdnoreturn.h.
	All uses of noreturn replaced by _Noreturn,
	at start of declaration for benefit of C23.
	* lib/.gitignore, m4/.gitignore: Remove names of
	stdnoreturn-related files.

	maint: stop using obsolete fdl module

	maint: update .gitignore to match Gnulib changes

	build: update gnulib submodule to latest

2022-07-20  Paul Eggert  <eggert@cs.ucla.edu>

	zgrep: tweak for sed failure
	* zgrep.in (icolon): Defend better against sed failure.
	Suggested by Lasse Collin.

2022-06-28  Paul Eggert  <eggert@cs.ucla.edu>

	build: update gnulib submodule to latest

	maint: update from Gnulib
	* bootstrap: Copy from Gnulib.

2022-06-28  Paul Eggert  <eggert@trombone>

	gzip: test invalid-input bug
	* NEWS: Mention the bug.
	* tests/unpack-invalid: Test for the bug.

	gzip: detect invalid input
	Problem reported by Young Mo Kang and fix from Mark Adler (Bug#56247).
	* inflate.c: Include stdbool.h.
	(fresh): New static var.
	* inflate.c (flush_output): Clear it.
	(inflate): Set it.
	(inflate_codes): Fail if the offset is outside a fresh input window.

	gzip: match printf format to arg type
	This pacifies gcc -Wformat -DDEBUG.
	* bits.c (send_bits):
	* deflate.c (check_match):
	* inflate.c (huft_build, inflate_codes):
	* trees.c (send_code, gen_codes, flush_block):
	Use correct printf formats for signed vs unsigned integers.

2022-04-07  Jim Meyering  <meyering@fb.com>

	maint: reference CVE-2022-1271 in 1.12's NEWS
	* NEWS: Reference newly-assigned CVE number.
	* cfg.mk (old_NEWS_hash)

2022-04-07  Paul Eggert  <eggert@cs.ucla.edu>

	maint: update --version copyright dates
	* cfg.mk (srcdirslash): New macro.
	(in_vc_files): Use it to avoid problems when srcdir is '.'.
	Also look for copyright dates in shell script *.in files,
	so that ‘zgrep --version’ etc. outputs current dates.
	* gunzip.in, gzexe.in, gzip.c, zcat.in, zcmp.in, zdiff.in:
	* zforce.in, zgrep.in, zless.in, zmore.in, znew.in:
	Update copyright date in --version output to 2022.

2022-04-07  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 1.12
	* NEWS: Record release date.

2022-04-07  Paul Eggert  <eggert@cs.ucla.edu>

	zgrep: fix "binary file matches" mislabeling
	Problem reported by Jim Avera (Bug#31280).
	This became more of an issue when GNU grep 3.5 (2020) started sending
	"binary file matches" diagnostics to stderr instead of to stdout.
	* tests/Makefile.am (TESTS): Add zgrep-binary.
	* tests/zgrep-binary: New test.
	* zgrep.in (args): New var, to accumulate args separately
	from grep command, so we can prepend args if need be.
	Most uses of 'grep' changed to use 'args' instead, or also.
	(with_filename): Set to 1 if more than one file and -h not given;
	this simplifies later code.
	(gnuish_grep): New var; evaluates to true if grep supports
	-H and --label options, as is true for GNU and FreeBSD grep.
	Append -H to 'grep' if outputting file names with GNUish grep,
	and use --label with GNUish grep unless reading from stdin,
	as that’s safer and more efficient than relabeling with 'sed'.

	maint: use C locale more often
	* gzexe.in, zdiff.in, zgrep.in:
	Run expr and sed in the C locale when it might help to avoid
	undefined behavior on non-GNU platforms.
	* sample/zfile, znew.in: Run in the C locale, for simplicity and
	to avoid undefined behavior on non-GNU platforms.

	gzexe: optimize out a grep
	* gzexe.in: Avoid an unnecessary invocation of ‘grep’,
	by using sed instead.  Also, look only for at-most-3-digit numbers,
	for consistency with the rest of the script.

	gzip: mention when fixed bugs were introduced

	zgrep: port to POSIX sed
	* zgrep.in (res): When escaping the file name do not rely on GNU
	sed’s extension to POSIX with respect to s/.../\n/.  Instead, use
	features that should also work with AIX and/or Solaris sed.  This is
	simpler anyway, and would have prevented the recently-fixed bug.

2022-04-07  Jim Meyering  <meyering@fb.com>

	zgrep: add NEWS and tests for this exploitable bug
	* tests/zgrep-abuse: New file, based on PoC by cleemy desu wayo.
	* tests/Makefile.am (TESTS): Add it.
	* NEWS: Mention the exploit.
	The bug appears to have been present since the beginning.

2022-04-06  Lasse Collin  <lasse.collin@tukaani.org>

	zgrep: avoid exploit via multi-newline file names
	* zgrep.in: The issue with the old code is that with multiple
	newlines, the N-command will read the second line of input,
	then the s-commands will be skipped because it's not the end
	of the file yet, then a new sed cycle starts and the pattern
	space is printed and emptied. So only the last line or two get
	escaped. This patch makes sed read all lines into the pattern
	space and then do the escaping.

	This vulnerability was discovered by:
	cleemy desu wayo working with Trend Micro Zero Day Initiative

2022-04-06  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: fix i386 port
	* deflate.c (prev_length, match_start, max_chain_length, good_match):
	Make these extern instead of static, reverting part of the
	2021-12-01T21:46:36Z!eggert@cs.ucla.edu patch.  These symbols are
	used by i386 asm, and so must be extern at least for i386.

	maint: pacify GCC with recent x86 glibc
	* configure.ac (WERROR_CFLAGS): Disable -Wtype-limits,
	due to a false alarm on platforms where 'long' is 32 bits
	and time_t is 64-bit, such as recent glibc on x86.

2022-04-04  Paul Eggert  <eggert@cs.ucla.edu>

	maint: update from Gnulib
	* bootstrap, tests/init.sh: Copy manually from current Gnulib.
	* lib/.gitignore, m4/.gitignore: Update as per current Gnulib.

	build: update gnulib submodule to latest

	build: support --program-prefix etc.
	Problem reported by Antonio Diaz Diaz via Dagobert Michelsen in:
	https://bugs.gnu.org/16876
	* Makefile.am (.in): Substitute for 'gzip', 'zdiff', 'zgrep'.
	($(GZIP_TRANSFORMED), $(ZDIFF_TRANSFORMED), $(ZGREP_TRANSFORMED)):
	New rules to build forwarding shell scripts, if needed.
	Add these files to BUILT_SOURCES and MOSTLY_CLEANFILES if needed.
	* configure.ac (GZIP_TRANSFORMED, ZDIFF_TRANSFORMED, ZGREP_TRANSFORMED):
	New substituted vars.
	(GZIP_IS_TRANSFORMED, ZDIFF_IS_TRANSFORMED, ZGREP_IS_TRANSFORMED):
	New Automake conditions.
	* gunzip.in, gzexe.in, zcat.in, zcmp.in, zdiff.in, zegrep.in:
	* zfgrep.in, zforce.in, zgrep.in, zless.in, zmore.in, znew.in:
	Quote possibly-transformed subcommand names.

2022-04-01  Paul Eggert  <eggert@cs.ucla.edu>

	doc: improve doc for saved timestamps etc.
	Problem reported by Carpe Sébastien (Bug#24559).

2022-03-31  Paul Eggert  <eggert@cs.ucla.edu>

	tests: port list-big test to macOS 12.1
	* tests/list-big: Use dd, not truncate, to create a big file.

	zmore: don't assume benign PAGER in testing
	* tests/help-version (zmore_setup): Unset PAGER so that we test
	'more', not whatever the tester has in its PAGER environment
	variable.  This works around a problem I found when I ran
	'PAGER=less make check' on a platform that lacked 'less'.

	zless: install only on platforms with 'less'
	Problem reported by Michael Felt (Bug#30029).
	* Makefile.am (ZLESS_MAN, ZLESS_PROG): New macros.
	(man_MANS, bin_SCRIPTS): Use them.
	* configure.ac: Check for 'less'.
	* tests/Makefile.am (ZLESS_PROG): New macro.
	(built_programs): Use it.

2022-03-29  Paul Eggert  <eggert@cs.ucla.edu>

	doc: spelling fixes

	doc: omit @refill
	* doc/gzip.texi: Remove @refill to suppress warning
	‘gzip.texi:562: warning: @refill is obsolete.’ from makeinfo 6.8.

2022-03-08  Paul Eggert  <eggert@cs.ucla.edu>

	zdiff: fix another arg-handling bug
	Also allow args after file names.
	Problem reported by Lv Ying <https://bugs.gnu.org/54290#12>.

2022-03-07  Paul Eggert  <eggert@cs.ucla.edu>

	zdiff: fix arg handling bug
	Problem reported by Lv Ying (Bug#54291).
	* zdiff.in (escape): Handle args like '-C 5'.

2022-02-10  Paul Eggert  <eggert@cs.ucla.edu>

	doc: embolden SEE ALSO refs
	Problem reported by Helge Kreutzmann (Bug#53918).

2022-01-03  Jim Meyering  <meyering@fb.com>

	maint: avoid new syntax-check failures
	* cfg.mk (local-checks-to-skip): Add sc_indent, to skip it.
	Otherwise, "make syntax-check" would fail.

	build: disable some expensive compiler warnings by default
	* configure.ac (gl_GCC_VERSION_IFELSE): Copy from coreutils.
	(gcc-warnings): Update from coreutils.

	maint: make update-copyright

	build: update gnulib to latest; also bootstrap and init.sh

2021-12-15  Paul Eggert  <eggert@cs.ucla.edu>

	doc: document gzip -l change
	* NEWS, doc/gzip.texi (Invoking gzip), gzip.1 (gunzip):
	Document recent change.

	gzip: gzip -l now outputs accurate size
	gzip -l now decompresses to see how long the uncompressed file was.
	This fixes what is by far the most common bug report for gzip.
	It has a significant performance cost, but it’s worth it nowadays.
	* gzip.c (main): -l now sets 'test' too.  All uses of
	'test' changed.
	(treat_stdin, treat_file): Call do_list after decompressing,
	so that the length is known.
	(do_list): Omit arg IFD, since it is no longer needed.
	All callers changed.  Get the CRC and uncompressed size
	from input_crc and bytes_out instead of using lseek.
	* tests/list-big: New test.
	* unzip.c (unzip): Set unzip_crc before returning.
	* util.c (write_buf): If 'test', output nothing.
	Update bytes_out with output byte count, regardless of 'test'.
	All callers changed.

2021-12-01  Paul Eggert  <eggert@cs.ucla.edu>

	maint: reduce module coupling
	If a symbol is extern but never used by another module, make it
	static instead, or remove it if it is not used anywhere.
	* Makefile.am (gzip_SOURCES): Remove lzw.c.
	* bits.c (bi_buf, bi_valid) [!IBM_Z_DFLTCC]:
	* deflate.c (prev_length, match_start, max_chain_length)
	(good_match, lm_init):
	* gzip.c (verbose) [!DEBUG]:
	* unlzw.c (block_mode):
	Now static.
	* gzip.c (help, main, do_lzw):
	* revision.h:
	Simplify by assuming !LZW.
	* util.c (setcrc): Define only if IBM_Z_DFLTCC.
	(make_simple_name): Define only if NO_MULTIPLE_DOTS.

2021-10-30  Paul Eggert  <eggert@cs.ucla.edu>

	maint: modernize README-{hacking,prereq}

2021-09-07  Paul Eggert  <eggert@cs.ucla.edu>

	build: update gnulib submodule to latest

2021-09-03  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 1.11
	* NEWS: Record release date.

2021-08-31  Paul Eggert  <eggert@cs.ucla.edu>

	tests: port still better to NetBSD
	* tests/hufts: Ignore more lines starting with ‘+’ in stderr.

	tests: port better to NetBSD
	* tests/hufts, tests/zdiff:
	Ignore lines starting with ‘+’ in stderr.
	The NetBSD shell outputs them after set -x.

	tests: update help-version from coreutils
	This merges coreutils/tests/misc/help-version.sh into
	gzip/tests/help-version; they're now identical except
	for the initial init.sh configuration line.  This
	should port better to NetBSD.

	maint: update .gitignore files
	* .gitignore, lib/.gitignore, m4/.gitignore:
	Bring up to date.  Remove duplicates.  Sort.

	tests: port two-files to IRIX 6.5
	Problem reported by Nelson H. F. Beebe.
	* tests/two-files: Skip test if /dev/urandom is not readable.

2021-08-29  Jim Meyering  <meyering@fb.com>

	build: update gnulib to latest

	maint: don't send announcements to TP coordinator
	gzip has no translatable strings, so don't include the translation
	project coordinator's email address in the announcement template.
	* cfg.mk (translation_project_): Define to be empty.

2021-08-19  Paul Eggert  <eggert@cs.ucla.edu>

	gzip: clarify "other links" diagnostic
	* gzip.c (treat_file): Instead of saying
	"gzip: FOO has 1 other link  -- unchanged", say
	"gzip: FOO has 1 other link -- file ignored".
	This is clearer when -k is also used (Bug#50097).

2021-08-08  Jim Meyering  <meyering@fb.com>

	build: update gnulib to latest

2021-06-30  Jim Meyering  <meyering@fb.com>

	build: update gnulib to latest

2021-04-11  Dmitry V. Levin  <ldv@altlinux.org>

	bug#47715: [PATCH] gzip.c: use a more portable alignment
	The alignment of 8192 introduced by commit
	be0c5581e38332b2ffa8a4cf92076cfde02872b4 is not quite portable:
	eu-elflint --gnu-ld complains about the result gzip executable
	with the following diagnostics:
	section [25] '.bss' not fully contained in segment of program header entry 6

	* gzip.c [__alignas_is_defined] (BUFFER_ALIGNED): Decrease alignment
	from 8192 back to 4096.

2021-03-07  Paul Eggert  <eggert@cs.ucla.edu>

	maint: modernize .gitignore
	* lib/.gitignore, m4/.gitignore: Sort and modernize
	to current Gnulib.

	zgrep: fix option typo
	* zgrep.in: Fix typo in option processing that prevented
	operands like ‘binary-1’.

	gzip: port to SIGPIPE-less platforms
	* gzip.c (main): Don’t assume SIGPIPE is defined.

2021-02-26  Paul Eggert  <eggert@cs.ucla.edu>

	* gzip.1: Quote better (Bug#46730).

2021-01-01  Jim Meyering  <meyering@fb.com>

	maint: update all copyright year number ranges
	Run "make update-copyright" and then...
	* gnulib: Update to latest with copyright year adjusted.
	* tests/init.sh: Sync with gnulib to pick up copyright year.
	* bootstrap: Likewise.

2020-12-09  Jim Meyering  <meyering@fb.com>

	maint: avoid another autoreconf warning
	* configure.ac: modernize AC_TRY_COMPILE invocation
	Use AC_COMPILE_IFELSE instead of AC_TRY_COMPILE.

	maint: remove uses of obsolete macros
	* configure.ac (AC_TYPE_SIGNAL, AC_ISC_POSIX, AC_HEADER_STDC): Remove.

	maint: avoid autoreconf warnings
	* configure.ac: Go back to using AC_PROG_CC rather than AC_PROG_CC_STDC,
	as the latter is obsolescent and the Autoconf bug involving the former
	has been fixed.

	build: update gnulib to latest

	build: require autoconf-2.64
	* configure.ac: Require autoconf-2.64, up from 2.63, to align with gnulib.

2020-09-24  Ilya Leoshkevich  <iii@linux.ibm.com>

	Add a test for compressing and decompressing two files
[--snip--]
