+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>.