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

	version 2.8
	* NEWS: Record release date.

	build: update gnulib, for fixed getcwd test

	build: update gnulib submodule to latest

	maint: remove syntax-checking sc_tight_scope rule
	* src/Makefile.am (sc_tight_scope): Remove rule.
	Now it's provided via gnulib's maint.mk.
	* cfg.mk (sc_tight_scope): Likewise.

2011-05-08  Jim Meyering  <meyering@redhat.com>

	maint: use consistent declaration syntax
	* src/grep.h (matchers): Declare consistently, so the sc_tight_scope
	rule detects this as an extern-marked variable.

2011-05-07  Jim Meyering  <meyering@redhat.com>

	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.
	* gnulib: Update submodule to latest.

	tests: exercise bug with 0x80..0xff in [...]
	* tests/high-bit-range: New test, inspired by an example in the
	report by Igor O. Ladygin: http://bugs.debian.org/624387,
	via Santiago Ruano Rincón's http://savannah.gnu.org/bugs/?33198
	* tests/Makefile.am (TESTS): Add it.

	fix a bug whereby echo c|grep '[c]' would fail for any c in 0x80..0xff
	* src/dfa.c (setbit_case_fold) [MBS_SUPPORT]: Set the bit also
	when wctob returns EOF.
	* NEWS (Bug fixes): Mention it.

2011-05-02  Reuben Thomas  <rrt@sc3d.org>

	doc: correct comment about mmap
	* doc/grep.texi (Other Options) [--mmap]: This option is now
	ignored, so using it can have no effect on performance.

2011-05-02  Arnold D. Robbins  <arnold@skeeve.com>

	build: move add_utf8_anychar into MBS ifdef

	maint: remove GAWK ifndef; no longer needed

2011-05-01  Jim Meyering  <meyering@redhat.com>

	maint: remove now-unnecessary use of gnulib's strtol module
	* bootstrap.conf (gnulib_modules): Remove now-obsolete "strtol".

2011-04-29  Jim Meyering  <meyering@redhat.com>

	maint: tweak README-release
	* README-release: Add note to check the NixOS/Hydra autobuilder results.

2011-04-28  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest

	maint: add the tight_scope syntax-checking rule
	This ensures that the only externally scoped symbols are ones
	that are explicitly marked as "extern" or white-listed like "main".
	* src/Makefile.am (sc_tight_scope): New rule, copied from coreutils.
	* cfg.mk (sc_tight_scope): Define, to hook to it from the top level.

	maint: mark some function declarations as extern
	* src/search.h: Add "extern" keyword to each function declaration.

2011-04-23  Jim Meyering  <meyering@redhat.com>

	maint: fix doubled-word typos in comments
	* src/dfa.c (SUCCEEDS_IN_CONTEXT): Remove doubled "a".
	* src/dfa.c (BACKREF): s/it it/it is/

2011-04-09  Jim Meyering  <meyering@redhat.com>

	maint: fix typos in comments: s/can not/cannot/
	* src/dfa.c (check_matching_with_multibyte_ops, dfastate): As above.

2011-03-19  Jim Meyering  <meyering@redhat.com>

	maint: stop using .x-sc_* files to list syntax-check exemptions
	Instead, use the new mechanism with which you merely use a
	variable (derived from the rule name) defined in cfg.mk to an ERE
	matching the exempted file names.
	* gnulib: Update to latest, to get maint.mk that implements this.
	* .x-sc_bindtextdomain: Remove file.
	* .x-sc_prohibit_tab_based_indentation: Likewise.
	* .x-sc_prohibit_xalloc_without_use: Likewise.
	* .x-sc_space_tab: Likewise.
	* cfg.mk: Define variables to exempt the same files.

	build: correct my change of 2011-01-28
	Do not override original dist-hook rule.
	* Makefile.am (run-syntax-check): Rename from overriding dist-hook.
	(dist-hook): Depend on run-syntax-check.

2011-02-28  Jim Meyering  <meyering@redhat.com>

	maint: update from gnulib
	* bootstrap: Update from gnulib.
	* tests/init.sh: Likewise.
	* gnulib: Update to latest.

2011-01-28  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest

	build: run syntax-check rules as part of "make dist"
	* Makefile.am (dist-hook): Depend on syntax-check.
	Suggested by Reuben Thomas.

2011-01-26  Jim Meyering  <meyering@redhat.com>

	maint: remove unneeded #include directives
	* lib/savedir.c: Don't include <stddef.h>.  Not needed.
	* src/dfa.c: Likewise.

2011-01-22  Jim Meyering  <meyering@redhat.com>

	build: avoid new syntax-check failures
	* .x-sc_bindtextdomain: New file, used to avoid a spurious
	failure from the new syntax-check rule.
	* NEWS: Remove a trailing space.

2011-01-19  Jim Meyering  <meyering@redhat.com>

	tests: add a known-to-fail test
	* tests/turkish-I: New test.
	* tests/Makefile.am (TESTS): Add it.
	(XFAIL_TESTS): Add here, too.
	Reported by Ilya Basin.

	maint: sort test names in Makefile.am
	* tests/Makefile.am (TESTS): Sort test names.

2011-01-05  Jim Meyering  <meyering@redhat.com>

	doc: remove erroneous "{,m}" item from grep man page
	* doc/grep.in.1: Remove item describing bogus {,m} regex notation.
	Reported by Fernando Basso.

2011-01-03  Jim Meyering  <meyering@redhat.com>

	maint: update copyright year ranges to include 2011
	Run "make update-copyright", so "make syntax-check" works in 2011.

	build: update gnulib submodule to latest

2010-12-20  Paolo Bonzini  <bonzini@gnu.org>

	main: fix exit status on xmalloc failures
	* NEWS: Update.
	* src/main.c (main): Set exit_failure.  Reported by Guy Shaw.

	add comment above fn_grep
	* configure.ac (fn_grep): Add comment suggested by Bruno Haible.

2010-11-14  Paolo Bonzini  <bonzini@gnu.org>

	grep: add include guards
	* src/system.h: Add multiple inclusion guards.
	* src/grep.h: Likewise.

	configure: fix M4 quotation
	* configure.ac: Add extra brackets around [...] patterns.

	configure: remove dependency on grep that supports long lines and -e
	* configure.ac (fn_grep): New.  Set GREP and EGREP to it, replace
	with newly-built grep before AC_OUTPUT.  Reported by Florin Iucha
	<http://savannah.gnu.org/bugs/?31646>.

2010-11-04  Jim Meyering  <meyering@redhat.com>

	build: update gnulib to latest

	tests: don't hard-code a 5-second timeout; that's not always enough
	Instead, time the command in the C locale and use 10 times that
	duration -- rounded up to whole seconds -- as the timeout when running
	it in the UTF-8 locale.
	* tests/backref-multibyte-slow: Compute a performance-relative timeout.
	Reported by Gilles Espinasse, regarding an imac 400.  For more details,
	see http://thread.gmane.org/gmane.comp.gnu.grep.bugs/3360

2010-10-09  Jim Meyering  <meyering@redhat.com>

	maint: describe policy on copyright year number ranges
	* README: Mention coreutils' long-standing policy on use of M-N
	ranges in copyright year lists.  Requested by Richard Stallman.

2010-10-04  Dmitry V. Levin  <ldv@altlinux.org>

	build: compile gnulib without -Wcast-align to avoid warnings on ARM
	* configure.ac (GNULIB_WARN_CFLAGS): Remove -Wcast-align.

2010-09-30  Jim Meyering  <meyering@redhat.com>

	maint: don't define a gpg_key_ID.  now it's obtained automatically
	* cfg.mk (gpg_key_ID): Remove definition.  No longer needed.

2010-09-23  Paolo Bonzini  <bonzini@gnu.org>

	tests: add testcase for previous fix
	* tests/inconsistent-ranges: New.
	* tests/Makefile.am (TESTS): Add it.

	dfa: process range expressions consistently with system regex
	The actual meaning of range expressions in glibc is not exactly strcoll,
	which makes the behavior of grep hard to predict when compiled with the
	system regex.  Leave to the system regex matcher the decision of which
	single-byte characters are matched by a range expression.

	This partially reverts a change made in commit 0d38a8bb (which made
	sense at the time, but not now that src/dfa.c is not doing multibyte
	character set matching anymore).

	* src/dfa.c (in_coll_range): Remove.
	(parse_bracket_exp): Use system regex to find which single-char
	bytes match a range expression.

2010-09-23  Bruno Haible  <bruno@clisp.org>

	build: fix link error on systems that have libiconv but not libintl
	* src/Makefile.am (LDADD): Add $(LIBICONV).

2010-09-21  Jim Meyering  <meyering@redhat.com>

	build: avoid compilation failure on the Hurd
	* src/dfasearch.c (dfawarn): Rename enum symbols to use DW_ prefix,
	so as not to collide with "GNU", which is defined by the Hurd.
	Reported by Matthias Lanzinger in http://savannah.gnu.org/bugs/?31096

	maint: avoid obsolete gnulib modules
	* bootstrap.conf (gnulib_modules): Don't use obsolete atexit module.
	Use malloc-gnu and realloc-gnu -- malloc and realloc are obsolete.

2010-09-20  Jim Meyering  <meyering@redhat.com>

	maint: update README-release
	* README-release: Reflect changes in coreutils' version of this file.

2010-09-20  Aharon Robbins  <arnold@skeeve.com>

	dfa: fix compilation when not using MBS
	* src/dfa.c (prepare_wc_buf) [!MBS_SUPPORT]: Do not compile this
	function.

2010-09-16  Jim Meyering  <meyering@redhat.com>

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

	version 2.7
	* NEWS: Record release date.

2010-09-14  Paolo Bonzini  <bonzini@gnu.org>

	tests: add equiv-classes
	* configure.ac (USE_INCLUDED_REGEX): Add Automake conditional.
	* tests/equiv-classes: New test.
	* tests/Makefile.am (TESTS): Add it.
	(XFAIL_TESTS) [USE_INCLUDED_REGEX]: Mark it as expected failure.

	dfa: fall back to glibc matcher if a MBCSET is found
	This patch enables full support of equivalence classes and multicharacter
	collation symbols.  It can also improve performance problems in some
	cases for multibyte grep.  Both of these changes however depend on the
	glibc version installed in the system.

	For UTF-8 it will trigger only in the presence of MBCSET, e.g. [a-z].
	For other character sets all brackets and `.` as well will trigger it.

	* NEWS: Document this.
	* src/dfa.c (dfaexec): Fall back to glibc for multibyte matches,
	if possible.

	build: update gnulib submodule to latest
	This is done to include commit "regex: Pass the system regex if its only
	problem is 32-bit regoff_t".

	* gnulib: Update to e2b0e1a.

2010-09-12  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest

	tests: update init.sh from gnulib
	* tests/init.sh: Update from gnulib.

2010-09-08  Patrick Boyd  <pboyd04@gmail.com>

	dfa: reduce stack usage
	* src/dfa.c (dfaanalyze): Allocate GRPS and LABELS arrays from heap,
	not on the stack.  With this change, grep can now run in these UEFI
	simulators:
	http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=EDK
	http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=EDK2

2010-09-08  Jim Meyering  <meyering@redhat.com>

	tests/portability: avoid spurious failure with OpenBSD's /bin/sh
	* tests/warn-char-classes: Don't use "set -x" here.  It causes
	a spurious test failure on openbsd 4.7 when using its /bin/sh,
	since the command, /bin/sh -xc 'P=1 : 2> err' emits "P=1" into err.
	To enable set -x, run the test with "VERBOSE=yes", e.g.,
	make check -C tests TESTS=warn-char-classes VERBOSE=yes

	build: update gnulib submodule to latest

2010-09-03  Jim Meyering  <meyering@redhat.com>

	tests: remove .sh suffix from remaining test scripts.
	* tests/backref: Rename from backref.sh.
	* tests/bre: Rename from bre.sh.
	* tests/ere: Rename from ere.sh.
	* tests/file: Rename from file.sh.
	* tests/khadafy: Rename from khadafy.sh.
	* tests/options: Rename from options.sh.
	* tests/pcre: Rename from pcre.sh.
	* tests/spencer1: Rename from spencer1.sh.
	* tests/spencer2: Rename from spencer2.sh.
	* tests/status: Rename from status.sh.
	* tests/yesno: Rename from yesno.sh.
	* tests/Makefile.am: Reflect renamings.

	tests: convert remaining tests to use init.sh
	* tests/file.sh: Use init.sh. Use Exit, not exit. Use grep, not ${GREP}.
	* tests/khadafy.sh: Likewise.
	* tests/options.sh: Likewise.
	* tests/spencer1.sh: Likewise.
	* tests/spencer2.sh: Likewise.
	* tests/status.sh: Likewise.
	* tests/spencer1.awk: Use grep, not ${GREP}.
	Don't ignore failure to generate intermediate shell script.
	* tests/Makefile.am (CLEANFILES): Remove altogether, now that
	all tests use init.sh.
	(TESTS_ENVIRONMENT): Don't set GREP.  It's no longer used.

	tests: remove warning.sh
	* tests/warning.sh: Remove file.  All it did was print a warning.
	* tests/Makefile.am (TESTS): Remove warning.sh.

	tests: convert pcre.sh to use init.sh
	* tests/pcre.sh: Use init.sh. Use Exit, not exit. Use grep, not ${GREP}.

	tests: convert bre.sh to use init.sh
	* tests/bre.sh: Use init.sh.
	Use Exit, not exit.
	Use "$abs_top_srcdir/tests/", not "$srcdir/" to specify inputs.
	Source generated bre.script, rather than invoking $SHELL.
	* tests/ere.sh: Likewise.
	* tests/bre.awk: Use grep, not ${GREP}.
	* tests/ere.awk: Likewise.
	* tests/Makefile.am (CLEANFILES): Remove bre.script and ere.script.

	tests: convert to use init.sh
	* tests/yesno.sh: Use init.sh.
	Use Exit, not exit.
	Use grep, not $GREP.
	* tests/backref.sh: Likewise.
	* tests/Makefile.am (CLEANFILES): Remove yesno.txt.

	build: update gnulib submodule to latest

	build: update build/test tools from gnulib
	* bootstrap: Update from gnulib.
	* tests/init.sh: Likewise.

2010-09-01  Jim Meyering  <meyering@redhat.com>

	maint: add lib/version-etc.c to the list in POTFILES.in
	* po/POTFILES.in: Add lib/version-etc.c.

	grep: diagnose and exit-2 for bogus REs like [:space:], [:digit:], etc.
	When I make a mistake like this:
	  grep '[:lower:]' ...
	be it in a script or on the command line, I want to know about
	it as soon as possible.  I don't want grep to print a mere warning
	that it is interpreting this suspicious and almost guaranteed-wrong
	regular expression as a set of just 6 bytes.  And I certainly don't
	want grep to silently do the wrong thing, even if that would be
	officially standards-conforming.  It's obvious that I intended
	[[:lower:]], and I want my error to be diagnosed in a way that is
	most likely to get my attention.  Thus, with this change, grep now
	prints a diagnostic and exits with status 2 the moment it
	encounters an offending [:char_class:] construct.

	This changes the way grep works by default, rather than
	putting this new behavior on an option.  A new option
	would seldom be used in scripts (not portable), and would
	probably be used only rarely by those who need it the most.
	This new functionality provides a valuable safety measure
	and incurs truly negligible risk.

	For strict POSIX compliance, set POSIXLY_CORRECT in
	your environment.  That disables this new feature.

	Revert the changes from commit 2cd3bcea, "grep: add
	--warnings={always,never,auto}.", and then do the following:

	* src/dfasearch.c (dfawarn): Call getenv("POSIXLY_CORRECT") here;
	Remove "warning: " from the diagnostic, now that it's more than
	a warning, and exit with status 2.
	* NEWS (New features): Describe the new semantics.
	* tests/warn-char-classes: Adjust one test to accommodate this change.
	* doc/grep.texi (Character Classes and Bracket Expressions): Document.
	(Environment Variables): Cross-reference it.
	Remove reference to obsolete getopt illegal vs. invalid difference.
	Thanks to Paul Eggert for suggestions and an initial prod.

2010-08-30  Jim Meyering  <meyering@redhat.com>

	maint: use gnulib's standard --version-printing code
	This includes author names and keeps the copyright year up to date.
	* bootstrap.conf (gnulib_modules): Add propername and version-etc-fsf.
	* src/main.c (AUTHORS): Define.
	(main): Use version_etc, rather than hard-coding the copyright text.
	Prompted by a patch from Paolo Bonzini.

2010-08-27  Paolo Bonzini  <bonzini@gnu.org>

	dfa: warn on [:space:] and similar
	* src/dfa.c (parse_bracket_exp): Warn on regular expressions such as
	[:space:].
	* src/dfa.h (dfawarn): New prototype.
	* src/dfasearch.c (dfawarn): New.
	* NEWS: Document.

	tests: add test for warnings
	* tests/Makefile.am (TESTS): Add warn-char-class.
	* tests/warn-char-class: New.

	grep: add --warnings={always,never,auto}.
	* src/grep.h (no_warnings): New declaration.
	* src/main.c (no_warnings): New.
	(WARNINGS_OPTION): Add to enum.
	(main): Add --warnings.  Handle color_option == 2 together with it.

	tests: add failing test for grep from a directory
	* tests/Makefile.am (TESTS, XFAIL_TESTS): Add grep-dir.
	* tests/grep-dir: New.

	tests: add test for previous commit
	* tests/Makefile.am (TESTS): Add grep-dev-null.
	* tests/grep-dev-null: New.

	search: fix "grep -Fif /dev/null"
	* bootstrap.conf: Include gnulib module minmax.
	* src/searchutils.c (mbtolower): Handle *N == 0 case.
	* src/system.h: Include minmax.h from gnulib.

2010-08-27  Adam Katz  <savannah@kopis.com>

	Remove declaration after statement in dfa.c
	* dfa.c (dfaexec): Declare saved_end at the beginning of the function.

2010-08-14  Jim Meyering  <meyering@redhat.com>

	make --include=FILE work once again
	The semantics of excluded_file_name changed (when operating on
	an "included" file name list).
	* src/main.c (main): Adjust for changed semantics of excluded_file_name
	simply by removing a negation.
	* NEWS (Bug fixes): Mention this fix.
	* tests/include-exclude: Add a test for this.
	Reported by Joe Perches in http://savannah.gnu.org/bugs/?29876.

2010-07-16  Paolo Bonzini  <bonzini@gnu.org>

	doc: document \s and \S
	* doc/grep.texi (The Backslash Character and Special Expressions):
	Document \s and \S escapes.

2010-05-29  Karl Berry  <karl@gnu.org>

	doc: discuss matches that span two or more lines
	* doc/grep.texi (Usage): Discuss matching across lines.
	(Character Classes and Bracket Expressions) <[:space:]>: refer to it.

2010-05-26  Jim Meyering  <meyering@redhat.com>

	build: use latest gettext: 0.18
	* configure.ac: Use gettext-0.18.
	* bootstrap.conf (gnulib_modules): Use gettext-h, not gettext.
	since the latter drags in a depedency on gettext 0.18.
	Suggested by Bruno Haible.

	maint: update helper scripts from gnulib
	* tests/init.sh: Update from gnulib.
	* bootstrap: Likewise.

	build: update gnulib submodule to latest

	maint: don't emit an extra newline in each of two diagnostics
	* src/main.c (context_length_arg, grepdir): Remove a stray \n in
	each of two diagnostics.

2010-05-24  Bruno Haible  <bruno@clisp.org>

	search: Avoid out-of-bounds access.
	* src/dfasearch.c (EGexecute): Avoid access beyond end of buffer
	that could happen if start != beg - buf.

2010-05-23  Aharon Robbins  <arnold@skeeve.com>

	dfa: fix signedness warnings
	* src/dfa.c (dfaexec): Cast p when passing it to prepare_wc_buf.

2010-05-09  Jim Meyering  <meyering@redhat.com>

	tests: update init.sh
	* tests/init.sh: Update from gnulib.

	tests: normalize init.sh-sourcing code
	* tests/backref-multibyte-slow: Use one-line idiom.
	* tests/backref-word: Likewise.
	* tests/case-fold-backref: Likewise.
	* tests/case-fold-backslash-w: Likewise.
	* tests/case-fold-char-class: Likewise.
	* tests/case-fold-char-range: Likewise.
	* tests/case-fold-char-type: Likewise.
	* tests/char-class-multibyte: Likewise.
	* tests/dfaexec-multibyte: Likewise.
	* tests/empty: Likewise.
	* tests/euc-mb: Likewise.
	* tests/fedora: Likewise.
	* tests/fgrep-infloop: Likewise.
	* tests/fmbtest: Likewise.
	* tests/foad1: Likewise.
	* tests/ignore-mmap: Likewise.
	* tests/include-exclude: Likewise.
	* tests/max-count-vs-context: Likewise.
	* tests/pcre-z: Likewise.
	* tests/prefix-of-multibyte: Likewise.
	* tests/reversed-range-endpoints: Likewise.
	* tests/sjis-mb: Likewise.
	* tests/spencer1-locale: Likewise.
	* tests/word-delim-multibyte: Likewise.
	* tests/word-multi-file: Likewise.

	tests: update help-version
	* tests/help-version: Update from coreutils.

2010-05-06  Jim Meyering  <meyering@redhat.com>

	tests: enable glibc's malloc-perturbing option
	* tests/Makefile.am (MALLOC_PERTURB_): Define, in case it's not already
	set in your environment.
	(TESTS_ENVIRONMENT): Propagate MALLOC_PERTURB_ setting to test scripts.

2010-05-06  Paolo Bonzini  <bonzini@gnu.org>

	dfa: speed up [[:digit:]] and [[:xdigit:]]
	There's no "multibyte pain" in these two classes, since POSIX
	and ISO C99 mandate their contents.

	Time for "./grep -x '[[:digit:]]' /usr/share/dict/linux.words"
	Before: 1.5s, after: 0.07s.  (sed manages only 0.5s).

	* src/dfa.c (predicates): Declare struct dfa_ctype separately
	from definition.  Add sb_only.
	(find_pred): Return const struct dfa_ctype *.
	(parse_bracket_exp): Return const struct dfa_ctype *.  Do
	not fill MBCSET for sb_only character types.

2010-05-05  Jim Meyering  <meyering@redhat.com>

	tests: readability: use awk rather than obfuscated sed
	* tests/backref-multibyte-slow: Generate input using an awk for-loop
	rather than expensive and harder-to-read sed pipes.
	Remove stray "set -x" and "wc -l in".

	dfa: avoid segfault when processing an invalid multi-byte sequence
	* src/dfa.c (dfaexec): Handle the cases in which mbrtowc returns
	(size_t)-1 or (size_t)-2, rather than setting mblen_buf[i] to an
	outrageously large value.

2010-05-05  Paolo Bonzini  <bonzini@gnu.org>

	grep: remove redundant syntax bit
	* grep.c (Gcompile): Remove RE_HAT_LISTS_NOT_NEWLINE.

	tests: add test for newly-fixed performance problem
	* tests/backref-multibyte-slow: New.
	* tests/Makefile.am: Add it.

	dfa: convert to wide character line-by-line
	This provides a nice speedup for -m in general, but especially
	it avoids quadratic complexity in case we have to go to glibc.

	* NEWS: Document change.
	* src/dfa.c (prepare_wc_buf): Extract out of dfaexec.  Convert
	only up to the next newline.
	(dfaexec): Exit multibyte processing loop if past buf_end.
	Call prepare_wc_buf again after processing a newline.

2010-05-01  Jim Meyering  <meyering@redhat.com>

	maint: remove useless #if HAVE_STDLIB_H
	* src/mbsupport.h: Don't test HAVE_STDLIB_H.

2010-04-20  Jim Meyering  <meyering@redhat.com>

	dfa: don't #ifdef-out member declarations
	* src/dfa.c (struct dfa): Remove "#if MBS_SUPPORT" guard that made
	several member declarations conditional on this cpp definition.
	(token): Likewise.
	Reported by Anders Wallin.

	tests: ensure that the --mmap option is ignored
	* tests/ignore-mmap: New file.
	* tests/Makefile.am (TESTS): Add it.
	Reported by Jaroslav Škarvada in <http://savannah.gnu.org/bugs/?29614>

2010-04-20  Paolo Bonzini  <bonzini@gnu.org>

	dfa: honor RE_DOT_NEWLINE and RE_DOT_NOT_NULL in UTF-8 period optimization
	* src/dfa.c (add_utf8_anychar): Check for RE_DOT_NEWLINE and
	RE_DOT_NOT_NULL.

	grep: fix --mmap not being ignored
	* NEWS: Document bugfix.
	* main.c (main): Ignore MMAP_OPTION.

2010-04-19  Jim Meyering  <meyering@redhat.com>

	maint: avoid syntax-check failure due to indentation via TABs
	* src/dfa.c (atom): Expand TABs in indentation.

	build: update gnulib submodule to latest

	maint: restrict scope of two globals to dfasearch.c
	* src/dfasearch.c (patterns, pcount): Declare these file-scoped
	globals to be static.

2010-04-19  Paolo Bonzini  <bonzini@gnu.org>

	dfa: optimize UTF-8 period
	* NEWS: Document improvement.
	* src/dfa.c (struct dfa): Add utf8_anychar_classes.
	(add_utf8_anychar): New.
	(atom): Simplify if/else nesting.  Call add_utf8_anychar for ANYCHAR
	in UTF-8 locales.
	(dfaoptimize): Abort on ANYCHAR.

	dfa: drop ORTOP
	* src/dfa.c (token, prtok, addtok_mb, nsubtoks, dfaanalyze, dfamust):
	Remove ORTOP.
	(regexp): Remove parameter, always add OR at the end, adjust callers.
	(atom): Adjust caller.
	(dfaparse): Adjust caller.  Always add OR at the end.

	dfa: fix {0,0}
	* NEWS: Document change.
	* src/dfa.c (struct dfa): Remove "broken" field.
	(lex): Do not set it.
	(closure): On {0,0}, backup and lex another closure without
	adding a CAT.
	(dfabroken): Remove.
	* src/dfa.h (dfabroken): Remove.
	* tests/spencer1.tests: Add testcases for {m,n}.

	dfa: simplify dfainit
	* src/dfa.c (dfainit): Use memset.

2010-04-17  Jim Meyering  <meyering@redhat.com>

	doc: fix a nit in HACKING
	* HACKING: Correct size of .git/ dir: 9MB, not 30MB.

	tests: add an expected-to-fail test using \< in a multi-byte locale
	* tests/word-delim-multibyte: New test.  Currently failing.
	* tests/Makefile.am (TESTS): Add it.
	(XFAIL_TESTS): Define, temporarily.
	Reported by Jaroslav Škarvada in http://savannah.gnu.org/bugs/?29537.

2010-04-17  Paolo Bonzini  <bonzini@gnu.org>

	test: cover just-fixed bug
	* tests/empty: Test -Fw too.

	grep: fix matching the empty string with grep -Fw
	* NEWS: Document fix.
	* src/kwsearch.c (Fexecute): The empty string is a valid match if it is
	a whole word.

2010-04-16  Jim Meyering  <meyering@redhat.com>

	maint: update init.sh and HACKING
	* HACKING: Sync from coreutils.
	* tests/init.sh: Update from gnulib.

2010-04-13  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest; adapt
	* COPYING: Remove empty line.
	* README: Likewise.
	* doc/fdl.texi: Likewise.
	* tests/backref-word: Likewise.

2010-04-12  Stefano Lattarini  <stefano.lattarini@gmail.com>

	tests: accept the Debian timeout program
	* tests/init.cfg: test timeout with `timeout 10s true'

2010-04-08  Jim Meyering  <meyering@redhat.com>

	dfa: convert "cannot happen" code/comment to use assert
	* src/dfa.c (dfamust): There were numerous "cannot happen" comments,
	some associated with "if (expr) goto done;".  Replace each with an
	equivalent "assert (!expr);".

	build: use gnulib's isblank module
	* bootstrap.conf (gnulib_modules): Use gnulib's isblank module,
	now that we rely on the function by that name.

	maint: undo TAB-conversion change to gl/lib/*.c.diff
	This fixes a bootstrap failure due to the patches not applying.
	* .x-sc_prohibit_tab_based_indentation: Add ^gl/lib/.*\.c\.diff$
	* gl/lib/regcomp.c.diff: Revert today's TAB->space change.
	* gl/lib/regex_internal.c.diff: Likewise.
	* gl/lib/regexec.c.diff: Likewise.

2010-04-08  Arnold D. Robbins  <arnold@skeeve.com>

	dfa: fix declaration of dfabroken in dfa.h
	* dfa.h (dfabroken) [GAWK]: Fix declaration to match that in dfa.c.

2010-04-08  Jim Meyering  <meyering@redhat.com>

	maint: add syntax-check rule to enforce the new no-leading-TABs policy
	* cfg.mk (sc_prohibit_tab_based_indentation): New rule, from coreutils.
	(sc_prohibit_emacs__indent_tabs_mode__setting): Likewise.
	(old_NEWS_hash): Update.
	* .x-sc_prohibit_tab_based_indentation: List exempt files.

	convert all TABs to equivalent spaces in indentation
	Using this file,

	cat > leading-blank.exempt <<\EOF
	(?:^|\/)ChangeLog[^/]*$
	(?:^|\/)(?:GNU)?[Mm]akefile[^/]*$
	\.(?:am|mk)$
	EOF

	run this command to convert all non-conforming leading white
	space to be all spaces:

	git ls-files \
	  | pcregrep -vf leading-blank.exempt \
	  | xargs pcregrep -l '^ *\t' \
	  | xargs perl -MText::Tabs -ni -le \
	    '$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'

	build: include cfg.mk in the distribution tarball
	* Makefile.am (EXTRA_DIST): Add cfg.mk.

	maint: Makefile.am tweak  (no semantic change)
	* Makefile.am (EXTRA_DIST): List one per line.  Sort.

	build: include cfg.mk in the distribution tarball
	* Makefile.am (EXTRA_DIST): Add cfg.mk.

	dfa: move definition of __attribute__ back into dfa.h
	* src/dfa.c (__attribute__): Move definition back to...
	* src/dfa.h: ... this file.  It is essential for non-gcc compilers.
	Reported by Arnold Robbins.

2010-04-07  Arnold D. Robbins  <arnold@skeeve.com>

	dfa: move internals from dfa.h to dfa.c
	* src/dfa.h: Move internals into dfa.c.
	* src/dfa.c: The dfa internals are now totally local to this file.
	(dfaalloc, dfamusts, dfabroken): New functions to access features.
	* src/dfasearch.c (dfa): Change this global variable from struct to pointer.
	Adapt to that change, and use new functions, dfamusts and dfaalloc.

2010-04-07  Jim Meyering  <meyering@redhat.com>

	mbtolower: avoid potential NULL-dereference
	* src/searchutils.c: Include <assert.h>.
	(mbtolower): Assert that 0 < *n, to avoid possibility of NULL-deref.
	Remove dead increment.

	maint: tell git to ignore more build products
	* .gitignore: Also ignore results of "make ID" and "make tags".

	build: update gnulib submodule to latest

	tests: use init.sh consistently
	* tests/euc-mb: Call "path_prepend_ ." on a line by itself,
	and with a comment.  This makes it so all of the srcdir/init.sh
	lines are consistent, project-wide, and so that the addition of "."
	to PATH for this test is properly documented.
	* tests/sjis-mb: Likewise.

	maint: avoid new syntax-check failure, ...
	...now that the sole use of xmalloc no longer matches the
	regular expression used by the syntax-check rule.
	* .x-sc_prohibit_xalloc_without_use: Exempt src/kwset.c.

	grep: make kwset's obstack use xmalloc, not malloc
	This insidious bug could make grep fail to diagnose a failed malloc,
	and then proceed to dereference the resulting NULL pointer.
	Note that this bug was unlikely ever to cause real trouble; without
	the fix, grep would segfault upon OOM, now it exits with a diagnostic.
	* src/kwset.c (malloc) [GREP]: Define without the "(s)" macro
	parameter, so that unadorned uses of malloc are also mapped to xmalloc.
	One such use is in the expansion of obstack_init.
	Report and patch by Nelson H. F. Beebe, in
	http://thread.gmane.org/gmane.comp.gnu.grep.bugs/2995

	tests: improve help-version (sync from gzip's version)
	* tests/help-version: Cross-check $VERSION and --version output.
	* tests/Makefile.am (TESTS_ENVIRONMENT): Export VERSION=$(VERSION).

2010-04-06  Jim Meyering  <meyering@redhat.com>

	doc: update THANKS
	* THANKS: Update.

2010-04-06  Aharon Robbins  <arnold@skeeve.com>

	build: avoid conflict with WCHAR definition from Cygwin's <windows.h>
	* src/dfa.h (enum token): Remove the definition from this file.
	Replace with a declaration and typedef.  Moved to ...
	* src/dfa.c (enum token): ... here.
	Reported by Corinna Vinschen.

2010-04-06  Jim Meyering  <meyering@redhat.com>

	doc: add HACKING
	* HACKING: New file.  Copied from coreutils, with s/coreutils/grep/
	and a few minor edits.

2010-04-05  Jim Meyering  <meyering@redhat.com>

	tests: pull fixed init.sh from gnulib
	* tests/init.sh: Update from gnulib.

	maint: fix new argmatch-related syntax-check failures
	* configure.ac (ARGMATCH_DIE): Use usage(EXIT_FAILURE), not exit(1).
	* po/POTFILES.in: Add lib/argmatch.c.

	maint: update cfg.mk to work with gnulib's newer "make syntax-check"
	* cfg.mk: Update to use new _sc_search_regexp interface.  Run this:
	perl -pi -e 's/\b_prohibit_regexp\b/_sc_search_regexp/;'
	-e 's/\bmsg=/halt=/; s/\bre=/prohibit=/;' cfg.mk
	and then adjust backslashes so they still line up.

	maint: update tests/init.sh from gnulib
	This ensures that the explanation for any skipped or failed test
	is printed on stderr, not buried in each .log file.
	* tests/init.sh: Update from gnulib.
	* tests/init.cfg (stderr_fileno_): Define to 9, to match the
	literal 2>&9 in tests/Makefile.am

	build: update gnulib submodule to latest

2010-04-04  Jim Meyering  <meyering@redhat.com>

	maint: use argmatch, for better --directories=INVAL diagnostics
	Before, you'd see this:
	  grep: unknown directories method

	Now, you'll see this:
	  grep: invalid argument `INVAL' for `--directories'
	  Valid arguments are:
	    - `read'
	    - `recurse'
	    - `skip'
	  Usage: src/grep [OPTION]... PATTERN [FILE]...
	  Try `src/grep --help' for more information.

	* bootstrap.conf: Add argmatch.
	* configure.ac: Define ARGMATCH_DIE and ARGMATCH_DIE_DECL.
	* src/main.c (directories_type): Define.
	(directories_args, directories_types) Define.
	All of the above so we can...
	(main): Use XARGMATCH.
	(usage): Declare extern, now that argmatch calls it via ARGMATCH_DIE.

	dfa.c: const correctness; and remove useless casts of realloc and malloc
	* src/dfa.c (icatalloc, icpyalloc, istrstr, enlist): As above.
	(inboth, dfamust, comsubs): Likewise.

	dfa.c: use a better (unsigned) type for an index: int->unsigned int
	* src/dfa.c (dfaexec): Use "unsigned int" for a logically unsigned index.

	maint: style: use sizeof VAR, rather than sizeof TYPE, where possible
	* src/dfa.c (copyset, zeroset): Prefer sizeof EXPR, over sizeof TYPE,
	for improved readability/maintainability.
	(equal, parse_bracket_exp, addtok_wc, dfaparse, dfaexec): Likewise.

2010-04-02  Jim Meyering  <meyering@redhat.com>

	dfa.c: use a better (unsigned) type for an index: int->size_t
	* src/dfa.c (parse_bracket_exp): Use size_t as type of index, not int.

	maint: const-correctness
	* src/dfa.c (tstbit, copyset, equal, charclass_index): Declare read-only
	"charclass" parameters to be "const".  No semantic change.

	maint: include <wchar.h> and <wctype.h> unconditionally
	* src/main.c: Include <wchar.h> and <wctype.h> unconditionally.
	Their presence/usefulness are assured by gnulib.
	* src/dfa.c: Likewise.
	* src/search.h: Likewise.

	maint: MBS_SUPPORT: define to 0/1, not undef/1
	Prepare to remove many of these #ifdefs.
	* src/mbsupport.h (MBS_SUPPORT): Define to 0/1, not undef/1.
	Change each "#ifdef MBS_SUPPORT" to "#if MBS_SUPPORT".  Use this:
	perl -pi -e 's/ifdef (MBS_SUPPORT)/if $1/' $(g grep -l ifdef.MBS_SUPPO)
	* src/dfa.c: s/#ifdef MBS_SUPPORT/#if MBS_SUPPORT/
	* src/dfa.h: Likewise.
	* src/dfasearch.c: Likewise.
	* src/kwsearch.c: Likewise.
	* src/main.c: Likewise.
	* src/search.h: Likewise.
	* src/searchutils.c: Likewise.

	maint: use STREQ in place of strcmp
	perl -pi -e 's/\bstrcmp *\((.*?)\) == 0/STREQ ($1)/' src/main.c
	perl -pi -e 's/\bstrcmp *\((.*?)\) != 0/!STREQ ($1)/' src/main.c

	* src/dfa.c (STREQ): Define.
	Use it instead of strcmp.
	* src/main.c (STREQ): Likewise.
	* cfg.mk (local-checks-to-skip): Remove sc_prohibit_strcmp,
	to enable the strcmp-prohibition.

	maint: enable the useless_cpp_parens syntax check
	* cfg.mk (local-checks-to-skip): Remove sc_useless_cpp_parens.
	* src/main.c (devices, fillbuf, exit_on_match): Remove useless parens.
	(print_line_head, grepfile, set_limits, main): Likewise.
	* src/vms_fab.h: Likewise.
	* vms/config_vms.h: Likewise.
	* src/mbsupport.h: Likewise.

	cleanup and improvement: parse command line arguments consistently
	* src/main.c: Include c-ctype.h, for this:
	(prepend_args): Use c_isspace, not ISSPACE.
	This is important so that we parse arguments consistently,
	and independently of the current locale.
	* bootstrap.conf (gnulib_modules): Add c-ctype.
	* src/system.h: Remove IS* definitions here, too.
	* src/dfasearch.c (WCHAR): Use isalnum, not ISALNUM.
	* src/kwsearch.c (WCHAR): Likewise.
	* src/searchutils.c (kwsinit): Use tolower, not TOLOWER.

	cleanup: rely on gnulib's ctype.h functions; remove IS* macros and is_*
	* src/dfa.c (setbit_case_fold, prednames): Use official names.
	(IS_WORD_CONSTITUENT, lex): Likewise.
	(ISALNUM, ISALPHA, ISCNTRL, ISDIGIT, ISGRAPH): Remove definitions.
	(ISLOWER, ISPRINT, ISPUNCT, ISSPACE, ISUPPER, ISXDIGIT): Likewise.
	(is_alnum, is_alpha, is_blank, is_cntrl, is_digit, is_graph): Likewise.
	(is_lower, is_print, is_punct, is_space, is_upper, is_xdigit): Likewise.
	(isgraph): Likewise.

	build: update gnulib submodule to latest, and adjust
	* src/main.c (parse_grep_colors): Adjust diagnostics not to trigger
	the sc_error_message_period and sc_error_message_uppercase
	syntax-check rules.

	maint: remove all VMS-related code
	* configure.ac (AC_CONFIG_FILES): Remove vms/Makefile
	* Makefile.am (SUBDIRS): Remove vms.
	* src/Makefile.am (EXTRA_DIST): Remove vms_fab.c and vms_fab.h.
	* src/vms_fab.c, src/vms_fab.h, vms/make.com: Remove files.
	* vms/Makefile.am, vms/README, vms/config_vms.h: Likewise.

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

	version 2.6.3
	* NEWS: Record release date.

	grep: avoid used-undefined error with truncated multibyte input
	* src/dfa.c (addtok_wc): Don't use buf[0] (it's undefined) when
	wcrtomb returns <= 0.

	MBS_SUPPORT-removal: * src/dfa.c (dfastate):

2010-04-01  Jim Meyering  <meyering@redhat.com>

	maint: avoid unnecessary 2nd getenv("TERM")
	* src/main.c (main): Don't call getenv("TERM") twice -- in the same
	expression, even.

	tests: remove all unportable uses of echo
	* src/main.c: Use printf rather than echo -ne in a comment.
	* tests/fedora: Use printf (not echo) also in ok/fail functions.
	* cfg.mk (sc_prohibit_echo_minus_en): New rule, to prohibit
	any future introduction.

	tests: add explicit requirement for en_US.UTF-8
	* tests/char-class-multibyte: Use require_en_utf8_locale_,
	rather than open-coding it.
	* tests/prefix-of-multibyte: Require the locale explicitly.
	* tests/fgrep-infloop: Likewise.
	This fixes test failures that would arise on systems without
	that particular locale.  Reported by Ludovic Courtès.

	tests: new function, to require an en_US UTF8 locale
	* tests/init.cfg (require_en_utf8_locale_): New function.

	tests: use printf, not echo -n, echo -e, or any combination
	* tests/fedora: Using printf is more portable.

	grep: remove unnecessary code
	* src/main.c (print_line_middle): Now that we use RE_ICASE
	(enabled in commit 70e23616, "dfa: rewrite handling of multibyte
	case_fold lexing"), this case-conversion code is useless and wasteful.
	Remove it.

	doc: fix typo: s/AM_V_AT/AM_V_at/
	* doc/Makefile.am (egrep.1 fgrep.1): The former has case consistent
	with its sister variable, AM_V_GEN, but the latter is the one that
	actually works.

	doc: generated files are best made read-only, ...
	...to minimize risk of accidentally modifying the generated file
	rather than its template.  These are tiny, so no risk, but it's
	a good to be consistent, so generated files are easier to spot.
	* doc/Makefile.am (egrep.1 fgrep.1): When generating these files,
	ensure that they too are created read-only.

	doc: generate grep.1 from template
	* doc/Makefile.am (grep.1): New rule.
	(CLEANFILES): Add grep.1 to the list.
	* .gitignore: Add /doc/grep.1
	* doc/grep.in.1: Replace hard-coded "2.5.1-cvs" with @VERSION@.
	Update copyright year list.
	Omit the line-splitting \(co directive so that update-copyright
	will perform future updates automatically.
	Egmont Koblinger reported the outdated version string
	and copyright year list in the man page:
	http://savannah.gnu.org/bugs/?29390

	doc: prepare to generate grep.1
	* doc/grep.1: Rename to...
	* doc/grep.in.1: ...this.

2010-03-31  Eric Blake  <eblake@redhat.com>

	build: avoid another warning
	Noticed on cygwin:
	get-mb-cur-max.c: In function 'main':
	get-mb-cur-max.c:27: error: unused parameter 'argc' [-Wunused-parameter]

	* tests/get-mb-cur-max.c (main): Use argc.

2010-03-31  Paolo Bonzini  <bonzini@gnu.org>

	tests: fix on systems with broken sh
	* tests/Makefile.am (TESTS_ENVIRONMENT): Adjust coreutils remnants.
	* tests/bre.sh: Invoke script with $SHELL if defined.
	* tests/ere.sh: Likewise.
	* tests/spencer1-locale: Likewise.
	* tests/spencer1.sh: Likewise.

	tests: improve empty test
	* tests/empty: Add more tests, note expected failure.

	tests: improve empty test with respect to locales
	* tests/empty: Add tests for multiple locales.

	grep: fix grep -F against empty string
	* src/searchutils.c (is_mb_middle): Do not return true for empty matches
	when p == buf.

	tests: rename empty.sh to empty
	* tests/empty.sh: Rename to...
	* tests/empty: ... this.
	* tests/Makefile.am (TESTS): Adjust.

	tests: convert empty.sh to new style
	* tests/empty.sh: Convert to init.sh, add 10-second timeout.

	tests: use get-mb-cur-max in char-class-multibyte
	* tests/char-class-multibyte: Use get-mb-cur-max to detect UTF-8 support.
	Rewrite previous locale detection code as a grep test.

	tests: fix -Wformat failure
	* tests/get-mb-cur-max (main): Cast MB_CUR_MAX to int.

2010-03-31  Jim Meyering  <meyering@redhat.com>

	doc: add a "Reply-To" to the suggested announcement mail header
	* README-release: Add "Reply-To" with the list address,
	to minimize risk of replies to the other announcement recipients.
	Suggestion from Eric Blake.

2010-03-30  Jim Meyering  <meyering@redhat.com>

	build: avoid compiler warning when building test program
	* tests/Makefile.am (AM_CPPFLAGS, AM_CFLAGS, AM_LDFLAGS): Define,
	so that all the usual C compile-and-link machinery comes into play.
	* tests/get-mb-cur-max.c: Include "progname.h".
	Remove unnecessary inclusion of <ctype.h>.
	Mike Frysinger reported the "implicit decl of set_program_name" warning.

	build: detect PCRE support also when <pcre/pcre.h> is the header
	* m4/pcre.m4: Also check for <pcre/pcre.h>.
	* src/pcresearch.c: Include <pcre/pcre.h>, if needed.
	Guard inclusions with HAVE_PCRE_H and HAVE_PCRE_PCRE_H, not HAVE_LIBPCRE.
	* NEWS (Bug fixes): Mention it.
	Dmitry V. Levin reported that PCRE support was not detected
	on systems with <pcre.h> not in the default include path.

2010-03-29  Jim Meyering  <meyering@redhat.com>

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

	version 2.6.2
	* NEWS: Record release date.

2010-03-29  Eric Blake  <eblake@redhat.com>

	build: avoid warnings on cygwin
	* lib/savedir.c (isdir): Avoid shadowing a declaration.
	* src/main.c (get_nondigit_option): Cast away const to avoid
	compiler warning.

	maint: ignore new test executable
	* .gitignore: Enhance.

2010-03-29  Jim Meyering  <meyering@redhat.com>

	doc: consolidate redundant-looking entries
	* NEWS: Consolidate the two --include/exclude-related entries.
	Suggested by Eric Blake.

2010-03-29  Paolo Bonzini  <bonzini@gnu.org>

	tests: use $(...) consistently
	* tests/backref.sh: Use `...' instead of ``...'' in comments.
	* tests/bre.awk: Use $(...) instead of `...`.
	* tests/ere.awk: Use $(...) instead of `...`.
	* tests/euc-mb: Use $(...) instead of `...`.
	* tests/fmbtest: Use $(...) instead of `...`.
	* tests/foad1: Use $(...) instead of `...`.
	* tests/pcre-z: Use $(...) instead of `...`.  Quote output of grep.
	* tests/spencer1-locale.awk: Use $(...) instead of `...`.
	* tests/spencer1.awk: Use $(...) instead of `...`.
	* tests/yesno.sh: Use $(...) instead of `...`.

2010-03-29  Jim Meyering  <meyering@redhat.com>

	build: make doc/Makefile.am cleaner and more robust
	* doc/Makefile.am (egrep.1 fgrep.1): Generate robustly, i.e.,
	do not redirect directly to $@.
	Use $(AM_V_GEN).
	Do not distribute intermediate files like fgrep.man and egrep.man.
	Likewise, do not use them to generate their %.1 images.
	Instead, generate the .1 files directly.

2010-03-29  Paolo Bonzini  <bonzini@gnu.org>

	tests: add program to detect locales
	* tests/Makefile.am (check_PROGRAMS): Add get-mb-cur-max.
	* tests/get-mb-cur-max.c: New.
	* tests/euc-mb: Use it.  Fail if the former detection test fails.
	* tests/sjis-mb: Use it.  Fail if the former detection test fails.  Expand
	comments.

	tests: add tests for SJIS character sets
	The attached test will be skipped unless (on a glibc system) you run
	something like

	  mkdir /usr/lib/locale/ja_JP.SHIFT_JIS
	  zcat /usr/share/i18n/charmaps/SHIFT_JIS.gz | \
	    localedef \
	      -f - \
	      -i /usr/share/i18n/locales/ja_JP \
	      /usr/lib/locale/ja_JP.SHIFT_JIS

	* tests/Makefile.am: Add sjis-mb.
	* tests/sjis-mb: New.

	grep -F: fix a bug with SJIS character sets
	Commit db9d6 would erroneously skip matches in SJIS character sets.  In
	this character set low bytes (i.e. ASCII bytes) are also valid second
	bytes in a double-byte character, so you have to continue looking for
	a match, even if you match in the middle of a double-byte character.

	* src/kwsearch.c: Ensure that beg is advanced by at least one byte,
	but do not fail immediately after matching in the middle of a double-byte
	character.

2010-03-29  Bruno Haible  <bruno@clisp.org>

	build: update after change in gnulib's lib-ignore module
	* src/Makefile.am (AM_LDFLAGS): Define.  Use gnulib's new
	$(IGNORE_UNUSED_LIBRARIES_CFLAGS).

2010-03-29  Jim Meyering  <meyering@redhat.com>

	tests: disable new texinfo-acronym syntax-check from gnulib
	* cfg.mk (local-checks-to-skip): Add new sc_texinfo_acronym, to skip it.

2010-03-28  Norihiro Tanaka  <noritnk@kcn.ne.jp>

	tests: exercise fix for improper match of incomplete MB char prefix
	* tests/prefix-of-multibyte: New file.
	* tests/Makefile.am (TESTS): Add it.

2010-03-28  Jim Meyering  <meyering@redhat.com>

	grep -F: fix a multi-byte erroneous-match-in-middle bug
	Just as Perl prints nothing in this case,
	  printf '\357\274\241\n' | perl -CIO -lne '/\357/ and print'

	grep should also print nothing when used as follows.
	However, these would mistakenly match with grep prior to 2.6.2:
	  printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\357'
	  printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\357\274'

	* src/searchutils.c (is_mb_middle): New parameter: the length of the
	match, in bytes, as determined by kwsexec.  Use this to detect when
	the nominal match found by kwsexec must be skipped because it is for
	an incomplete multi-byte character that is a prefix of a character
	in the input.
	* src/dfasearch.c (EGexecute): Update caller.
	* src/kwsearch.c (Fexecute): Likewise.
	* src/search.h: Update prototype.
	* NEWS (Bug fixes): Mention it.
	Report and analysis by Norihiro Tanaka.

2010-03-28  Norihiro Tanaka  <noritnk@kcn.ne.jp>

	tests: add tests for the fgrep-infloop bug
	* tests/init.cfg (require_timeout_): New function.
	* tests/fgrep-infloop: New file.  Test for the above fix.
	* tests/Makefile.am (TESTS): Add it.

2010-03-28  Jim Meyering  <meyering@redhat.com>

	grep -F: avoid infinite loop when searching for incomplete MB character
	Searching for an incomplete non-prefix of a multi-byte character
	should find no match.

	  Just as these print nothing,
	    printf '\357\274\241\357\274\241\n' \
	      | perl -CIO -ne '/\241\357/ and print'
	    printf '\357\274\241\n' | perl -CIO -ne '/\274\241/ and print'
	    printf '\357\274\241\n' | perl -CIO -ne '/\241/ and print'
	    printf '\357\274\241\n' | perl -CIO -ne '/\274/ and print'

	  These should also print nothing, but with grep-2.6 and grep-2.6.1,
	  they would infloop:
	    printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\241'
	    printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\274'
	    printf '\357\274\241\n' | LC_ALL=en_US.UTF-8 src/grep -F $'\274\241'

	* src/kwsearch.c (Fexecute): Don't infloop when searching for
	an incomplete non-prefix part of a multi-byte character.
	* NEWS (Bug fixes): Mention it.
	Reported and diagnosed by Norihiro Tanaka.

	tests: rename: fmbtest.sh -> fmbtest
	* tests/fmbtest.sh: Rename to ...
	* tests/fmbtest: ...this, dropping the .sh suffix.
	* tests/Makefile.am (TESTS): Reflect renaming.

	tests: convert fmbtest.sh to use init.sh
	* tests/fmbtest.sh: Use init.sh and adapt accordingly:
	Use "grep", not ${GREP}.  Use Exit, not exit.

	tests: also exercise the --include + glob path
	* tests/include-exclude: Exercise Javier's fix.

2010-03-28  Javier Villavicencio  <the_paya@gentoo.org>

	grep -r: fix --include with globs, too
	The previous fix addressed only the non-glob case.
	* src/main.c (main): Use add_exclude's EXCLUDE_WILDCARDS option,
	to enable the use of fnmatch with --include=GLOB.
	gnulib: Update to latest, for the fixed exclude.c.

2010-03-28  Jim Meyering  <meyering@redhat.com>

	grep -r: fix --include with non-globs
	* lib/savedir.c (savedir): Fix logic error.  Introduced by commit
	bf3bd92c, "build: adapt to the newer exclude API we now get from gnulib"
	* tests/include-exclude: Test for this bug by exercising --include, too.
	* NEWS (Bug fixes): Mention it.
	Reported by Philipp Kohlbecher in http://savannah.gnu.org/bugs/?29358

2010-03-27  Jim Meyering  <meyering@redhat.com>

	kwset: correct comments; require non-NULL kwsmatch argument
	* src/kwset.c (kwsexec): Correct comments.  This function has been
	returning an offset, not a pointer, for 9 years.
	Do not test for kwsmatch == NULL.  All callers pass non-NULL.
	(cwexec): Likewise.
	* src/kwset.h (kwsexec): Mark the 4th parameter, kwsmatch, as non-NULL.
	Include "arg-nonnull.h".

	build: add -I$(top_builddir)/lib so we also find generated .h files
	* src/Makefile.am (AM_CPPFLAGS): Rename from INCLUDES to avoid
	warning from automake -Wall.
	Add -I$(top_builddir)/lib, so we find generated .h files like
	getopt.h in a non-srcdir build.

	build: remove superfluous LOCALEDIR definition
	* src/Makefile.am (INCLUDES): Remove unnecessary definition of
	LOCALEDIR here.  Now, it's defined via gnulib's configmake.h.
	* src/system.h: Include "configmake.h" for its LOCALEDIR definition.

	grep: don't segfault upon use of --include or --exclude* options
	* lib/savedir.c (isdir1): Fix fatal typo: deref "dir" argument,
	not the global (initially-NULL) "path".  Reported by Standish Parsley.
	* tests/include-exclude: New file.
	* tests/Makefile.am (TESTS): Add it.
	* NEWS (Bug fixes): Mention it.

2010-03-26  Jim Meyering  <meyering@redhat.com>

	tests: rename: foad1.sh -> foad1
	* tests/foad1.sh: Rename to ...
	* tests/foad1: ...this, dropping the .sh suffix.
	* tests/Makefile.am (TESTS): Reflect renaming.

	tests: convert foad1.sh to use init.sh
	This fixes a spurious test failure when "make check" is run with
	certain envvars set, e.g., "make check GREP_COLOR=always"
	* tests/foad1.sh: Use init.sh and adapt accordingly:
	Use "grep", not ${GREP}.  Test VERBOSE against "yes", not "1",
	to be consistent with init.sh.
	Use Exit, not exit.
	Reported by Nelson H. F. Beebe.

	tests: insulate tests from envvar settings
	* tests/init.cfg (vars_): Unset each envvar that can affect how
	grep works.  This protects only those tests that have been
	converted to use init.sh.

2010-03-26  Eric Blake  <eblake@redhat.com>

	maint: ignore 'make dist pdf' droppings
	* .gitignore: Add more exemptions.

2010-03-26  Jim Meyering  <meyering@redhat.com>

	tests: avoid spurious test failure due to lack of a French UTF8 locale
	* tests/init.cfg: New file.  If either $LOCALE_FR or $LOCALE_FR_UTF8
	is set to "none", reset it to the empty string.
	Reported by Mike Frysinger and Sven Joachim.
	* tests/Makefile.am (EXTRA_DIST): Add init.cfg.

	build: do not use pkg-config to test for PCRE support
	* configure.ac: Do not use PKG_PROG_PKG_CONFIG or PKG_CHECK_MODULES.
	Do not modify CPPFLAGS; that belongs to those who invoke make.
	Instead, use autoconf's AC_CHECK_HEADERS and AC_SEARCH_LIBS via the
	new macro, gl_FUNC_PCRE, defined in...
	* m4/pcre.m4 (gl_FUNC_PCRE): New macro, to handle pcre-related
	configure-time tests.
	* src/Makefile.am (grep_LDADD): Use LIB_PCRE, not PCRE_LIBS.
	* src/pcresearch.c: Test HAVE_LIBPCRE via "#if", not "#ifdef".
	All other cpp tests of this symbol used "#if".
	Prompted by a suggestion from Bruno Haible.
	* NEWS (Build-related): Mention this.

2010-03-25  Jim Meyering  <meyering@redhat.com>

	doc: correct and amend NEWS entries for 2.6.1
	* NEWS (Bug fixes): Correct character ranges bug description.
	Add an example from Dmitry V. Levin.
	Add that the word-with-backref bug was introduced in 2.5.1.
	* cfg.mk (old_NEWS_hash): Update to match.

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

	version 2.6.1
	* NEWS: Record release date.

2010-03-25  Tony Abou-Assaleh  <taa@acm.org>

	tests: use awk's -v option more portably
	* tests/spencer1-locale: Add a space between awk's "-v" option and
	the following VAR=value string, to avoid test failure on Mac OS X.

2010-03-25  Norihirio Tanaka  <noritnk@kcn.ne.jp>

	dfa/grep: fix compilation with MBS_SUPPORT
	* src/dfa.c (cur_mb_len): Initialize to 1 and always make it available.
	(setbit_case_fold): Do not use wint_t in prototype if !MBS_SUPPORT.
	(parse_bracket_exp): Fix compilation with !MBS_SUPPORT.
	* src/kwsearch.c (kwsinit): Do not use mbtolower and MB_CUR_MAX
	if !MBS_SUPPORT.
	* src/searchutils.c (kwsinit): Do not refer to MB_CUR_MAX if !MBS_SUPPORT.

	* tests/char-class-multibyte: Skip if UTF-8 matching does not work.
	* tests/fmbtest.sh: Likewise.

2010-03-25  Jim Meyering  <meyering@redhat.com>

	build: avoid warnings about unnecessary use of "return"
	* src/grep.c (Gcompile, Ecompile, Acompile): Do not "return X"
	from a function returning void, not even when X itself is a
	function returning void.  This avoids warnings from Sun Studio 11
	reported by Dagobert Michelsen.
	* src/egrep.c (Ecompile): Likewise.

2010-03-25  Norihirio Tanaka  <noritnk@kcn.ne.jp>

	grep: fix printing when -w is used and regex is needed for matching
	* NEWS: Document bugfix.
	* src/dfasearch.c (EGexecute): After assess_pattern_match len, is either
	invalid or end-beg; jump to success.
	* tests/Makefile.am (TESTS): Add new test.
	* tests/backref-word: New.

2010-03-25  Paolo Bonzini  <bonzini@gnu.org>

	dfa: fix single byte character ranges
	* src/dfa.c (in_coll_range): Fix ordering for second strcoll.  Reported
	by Dmitry V. Levin.
	* tests/spencer1-locale.awk: Also test single-byte character sets.
	* NEWS: Add a note about this bugfix.
	* THANKS: Add Dmitry.

2010-03-25  Norihirio Tanaka  <noritnk@kcn.ne.jp>

	grep: reset state after truncated or invalid multibyte sequences
	* src/searchutils.c (is_mb_middle): When treating an invalid sequence
	or a truncated multibyte character as a single byte character, reset
	mbstate

	grep: do lowercase conversion in print_line_middle only for single-byte case
	* src/main.c (print_line_middle): Restrict match_icase code
	to MB_CUR_MAX == 1.  Adjust comments.

2010-03-25  Jim Meyering  <meyering@redhat.com>

	tests: provide framework_failure_ function
	The shell function "framework_failure" was called in the unusual
	event that some fundamental test set-up operation would fail.
	However it was not defined.  Define it, but with a trailing underscore
	to impinge less on the test writer's name space.  Adjust all uses.
	* tests/init.sh (framework_failure_): New function.
	* tests/case-fold-backref: s/framework_failure/framework_failure_/
	* tests/case-fold-char-class: Likewise.
	* tests/case-fold-char-range: Likewise.
	* tests/case-fold-char-type: Likewise.
	* tests/char-class-multibyte: Likewise.
	* tests/dfaexec-multibyte: Likewise.
	* tests/max-count-vs-context: Likewise.
	* tests/word-multi-file: Likewise.

	doc: tweak THANKS
	* THANKS: Update Arnold's name and address, per request.

2010-03-24  Jim Meyering  <meyering@redhat.com>

	portability: use gnulib's lseek wrapper
	* bootstrap.conf (gnulib_modules): Use gnulib's lseek wrapper,
	for improved portability.  lseek does not fail with ESPIPE on
	pipes on some systems.

	build: avoid link failure on Solaris 8
	* bootstrap.conf (gnulib_modules): Add wctob.
	* NEWS (Portability): Mention this.
	Reported by Dagobert Michelsen in <http://sv.gnu.org/bugs/?29325>.

2010-03-24  Petr Písař  <petr.pisar@atlas.cz>

	doc: translate new --help message
	* src/main.c: Translate "after_options".

2010-03-24  Jim Meyering  <meyering@redhat.com>

	doc: NEWS make it clear that the bug was introduced in 2.6
	* NEWS: Clarify.

2010-03-24  Paolo Bonzini  <bonzini@gnu.org>

	tests: fix char-class-multibyte
	* tests/char-class-multibyte: Make it pass.

2010-03-23  Jim Meyering  <meyering@redhat.com>

	build: avoid compilation failure when MBS_SUPPORT not defined
	* src/dfa.c (setbit_case_fold) [!MBS_SUPPORT]: Fix curly brace mismatch.

2010-03-23  Paolo Bonzini  <bonzini@gnu.org>

	dfa: fix sigsegv on multibyte character classes
	Reported by Jaroslav Škarvada <jskarvad@redhat.com>.  This is
	unfortunate.  grep needs an automatic testcase generator.

	* NEWS: Document bug.
	* THANKS: Mention reporter.
	* src/dfa.c (set_bit_casefold): Change type of first argument for
	self-documentation.
	(parse_bracket_exp): Fix call.
	* tests/Makefile.am: Add new testcase.
	* tests/char-class-multibyte: New testcase.

2010-03-23  Jim Meyering  <meyering@redhat.com>

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

	version 2.6
	* NEWS: Record release date.

	build: avoid warnings: tell gcc and clang that dfaerror never returns
	* src/dfa.h (__attribute__): Define.
	(dfaerror): Declare with the "noreturn" attribute.
	* src/dfasearch.c (dfaerror): Add an unreachable use of abort.

2010-03-22  Eric Blake  <eblake@redhat.com>

	build: fix cygwin build
	Portions of gnulib depend on -lintl, and cygwin does not allow
	lazy linking.

	* src/Makefile.am (LDADD): Include libraries in correct order.

2010-03-22  Paolo Bonzini  <bonzini@gnu.org>

	grep: remove --mmap
	mmap is a bad idea for sequentially accessed file because it will cause
	a page fault for every read page.  Just consider it a failed experiment,
	and ignore --mmap while accepting it for backwards compatibility.

	* configure.ac (AC_FUNC_MMAP): Remove.
	* doc/grep.texi (Other options): Say --mmap is ignored.
	* src/grep.c (mmap_option): Remove.
	(long_options): Do not reference it.
	(bufmapped, initial_bufoffset): Remove.
	(reset, fillbuf): Remove HAVE_MMAP code.
	(grepfile): Remove bufmapped reference.
	(usage): Say --mmap is ignored.

	grep: rename files for intuitiveness
	* Makefile.am (libgrep_a_SOURCES, grep_SOURCES, egrep_SOURCES,
	fgrep_SOURCES): Adjust.
	* grep.c: Rename to main.c.
	* esearch.c: Rename to egrep.c.
	* fsearch.c: Rename to fgrep.c.
	* gsearch.c: Rename to grep.c.

	grep: kill GREP_PROGRAM/EGREP_PROGRAM/FGREP_PROGRAM
	* NEWS: Document slight semantic change.
	* TODO: #ifdefs are gone.
	* po/POTFILES.in: Update.
	* src/Makefile.am (grep_SOURCES, egrep_SOURCES, fgrep_SOURCES): Remove
	grep.c/egrep.c/fgrep.c.
	(noinst_LIBRARIES): Change libsearch.a to libgrep.a.
	(libsearch_a_SOURCES): Rename to libgrep_a_SOURCES, add grep.c
	(LDADD): Change libsearch.a to libgrep.a.
	* src/esearch.c: Add before_options and after_options.
	* src/fsearch.c: Likewise.
	* src/gsearch.c: Likewise.
	* src/grep.c (short_options, long_options): Remove GREP_PROGRAM
	special-casing.
	(usage): Use before_options and after_options, look at matchers.
	(setmatcher): Merge with install_matcher.
	(main): Call setmatcher (NULL) instead of install_matcher.
	* src/grep.h (GREP_PROGRAM): Remove.
	(before_options, after_options): Add.

	thank Eric Blake
	* THANKS: Add Eric Blake, who reported the warning fixed by 774d0ee.

	grep: libify *search.c
	* src/Makefile.am (libsearch_a_SOURCES): Add dfasearch.c, kwsearch.c,
	pcresearch.c.
	* src/esearch.c, src/fsearch.c, * src/gsearch.c: Only include search.h.
	* src/dfasearch.c (GEAcompile, EGexecute): Export.
	* src/kwsearch.c (Fcompile, Fexecute): Export.
	* src/pcresearch.c (Pcompile, Pexecute): Export.
	* src/search.h: Add new exported functions.

	grep: prepare for libification of *search.c
	* src/dfasearch.c (Ecompile): Remove.
	* src/esearch.c: Place it here...
	* src/gsearch.c: ... and here.

	grep: split search.c
	* po/POTFILES.in: Update.
	* src/Makefile.am (grep_SOURCES, egrep_SOURCES, fgrep_SOURCES): Move
	kwset.c and dfa.c to libsearch.a.  Add searchutils.c there too.
	* src/search.h, src/dfasearch.c, src/pcresearch.c, src/kwsearch.c,
	src/searchutils.c: New files, split out of src/search.c.
	* src/esearch.c, src/fsearch.c: Include the new files instead of search.c.
	* src/gsearch.c: Likewise, plus move Gcompile/Acompile here.

	grep: remove one #ifdef
	* search.c (GEAcompile) [EGREP_PROGRAM]: Use common code.  Inline IF_BK.

	grep: eliminate {COMPILE,EXECUTE}_{RET,ARGS,FCT}
	Modern compilers warn about type mismatches.

	* src/grep.c (do_execute): Write full declaration.
	* src/grep.h (COMPILE_RET, COMPILE_ARGS, COMPILE_FCT, EXECUTE_RET,
	EXECUTE_ARGS, EXECUTE_FCT): Remove.
	(compile_fp_t, execute_fp_t): Write full declaration.
	* src/search.c (GEAcompile, Gcompile, Acompile, Ecompile, EGexecute,
	Fcompile, Fexecute, Pcompile, Pexecute): Write full declaration.

	grep: make egrep/fgrep use struct matcher
	* Makefile.am (grep_SOURCES): Add gsearch.c.
	(EXTRA_DIST): Add search.c.
	* esearch.c (matchers): New.
	* fsearch.c (matchers): New.
	* gsearch.c: New.
	* search.c (matchers): Remove.
	* grep.c: Always compile most !GREP_PROGRAM sections.
	(main): Use first matcher if none is explicitly provided.  Remove
	"default" matcher.
	* grep.h (struct matcher): Adjust comments.

	grep: change struct matcher termination
	* src/grep.c (setmatcher): Look for NULL matchers[i].name.
	* src/grep.h (struct matcher): Change name to pointer.  Adjust comments.
	* src/search.c (matchers): Terminate with three NULLs.

	grep: remove one #ifdef
	* search.c (Ecompile): Always go through GEAcompile to use same code path
	for both grep and egrep.

	grep: remove getpagesize.h
	* src/getpagesize.h: Remove.
	* src/Makefile.am (noinst_HEADERS): Remove getpagesize.h.

2010-03-21  Jim Meyering  <meyering@redhat.com>

	build: use the fcntl-h module, not "fcntl"
	* bootstrap.conf (gnulib_modules): We might need fcntl.h somewhere,
	but don't use the fcntl function.  Reported by Bruno Haible.

	build: avoid link failure on systems using gnulib's fcntl but not open
	* bootstrap.conf (gnulib_modules): Using gnulib's fcntl module
	and including <fcntl.h>, but not also using gnulib's "open" module
	would result in link failure due to references to rpl_open
	on systems requiring the replacement (e.g., Cygwin and Darwin).

	build: avoid compilation failure on systems using rpl_open
	This new build failure has arisen as a result of using gnulib's
	"fcntl" module.  Now that an inadequate "open" syscall is replace
	by gnulib's wrapper, it is essential to include <fcntl.h>.
	* src/grep.c: Include <fcntl.h>.
	This is required, for grepfile's use of open, at least on
	Cygwin and Darwin.

	maint: use gnulib's fcntl module, just in case
	* bootstrap.conf (gnulib_modules): Add fcntl.
	Grep uses at least O_BINARY, which may be defined therein.

	maint: remove TYPE_* definitions from src/system.h
	* src/system.h (TYPE_MAXIMUM, TYPE_MINIMUM, TYPE_SIGNED): Remove
	definitions.  They are provided by intprops.h.
	* src/grep.c: Include "intprops.h"
	* bootstrap.conf (gnulib_modules): Add intprops.

	maint: alphabetize #include directives
	* src/grep.c: Alphabetize #include directives.

2010-03-20  Jim Meyering  <meyering@redhat.com>

	build: stop using gnulib's memmove module
	* bootstrap.conf (gnulib_modules): Remove obsolete module: memmove

	build: reinstate gnulib's fcntl-h-tests
	* bootstrap.conf (gnulib_tool_option_extras): Do not avoid
	the fcntl-h-tests.  I cannot reproduce the failure.

2010-03-20  Eric Blake  <eblake@redhat.com>

	build: allow compilation on cygwin
	Gnulib is incompatible with -Wunused-macros.  Addtionally,
	cygwin 1.7.1 coupled with --enable-gcc-warnings tripped on:

	grep.c: In function 'print_line_middle':
	grep.c:805: error: array subscript has type 'char' [-Wchar-subscripts]
	grep.c: In function 'main':
	grep.c:1833: error: 'optarg' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
	grep.c:1834: error: 'optind' redeclared without dllimport attribute after being referenced with dll linkage

	* configure.ac (GNULIB_WARN_FLAGS): Disable -Wunused-macros.
	* src/grep.c (print_line_middle): Use correct type to tolower.
	(main): Drop useless redeclarations.
	* .gitignore: Ignore more built files.

2010-03-20  Jim Meyering  <meyering@redhat.com>

	tests: ensure that all programs handle [b-a] consistently
	* tests/reversed-range-endpoints: New test.
	* tests/Makefile.am (TESTS): Add it.

	build: update gnulib submodule to latest
	This pulls in the latest regex module from gnulib, including a fix
	to make it honor the RE_NO_EMPTY_RANGES syntax bit.

	tests: temporarily disable irrelevant-to-grep failing C++ fcntl-h-tests
	* bootstrap.conf (gnulib_tool_option_extras): Temporarily add
	--avoid=fcntl-h-tests, until the C++ part of that test is fixed.

	reject reversed-endpoint ranges, with all regex variants
	* src/search.c: Add RE_NO_EMPTY_RANGES to the syntax bits
	in three places, so that all of grep, egrep, and grep -E reject
	a range with reversed endpoints like '[b-a]'.  This is required,
	when using the latest version of gnulib's regex module, since it
	now honors the RE_NO_EMPTY_RANGES flag, rather than acting as if
	it were always set.
	Based on a change by Matthew Burgess.

2010-03-19  Jim Meyering  <meyering@redhat.com>

	maint: correct macro parameter parentheses
	* src/dfa.c (FETCH_WC, FETCH): Parenthesize macro parameters.

2010-03-19  Paolo Bonzini  <bonzini@gnu.org>

	tests: change help-version to per-program functions
	* help-version: Change each *_args variable to a *_setup function.

	dfa: fix wchar_t/wint_t type mismatch
	* src/dfa.c (FETCH_WC): Pass a local wchar_t variable to mbrtowc.
	(FETCH): Rename temporary second argument to FETCH_WC.
	(parse_bracket_exp): Always use FETCH_WC.

2010-03-19  Jim Meyering  <meyering@redhat.com>

	doc: add README-prereq, referenced from README-hacking
	* README-prereq: New file.  Cloned from coreutils, s/coreutils/grep/
	Reported by Tony Abou-Assaleh.

2010-03-19  Arnold Robbins  <arnold@skeeve.com>

	maint: sync dfa comments from gawk
	* src/dfa.h (struct dfa) [newlines]: Amend comment.
	* src/dfa.c: Update copyright year list to include gawk's.

2010-03-17  Jim Meyering  <meyering@redhat.com>

	maint: remove obsolete "cvs-clean" make target
	* Makefile.am (cvs-clean): Remove obsolete target.

2010-03-17  Paolo Bonzini  <bonzini@gnu.org>

	dfa: initialize struct mbcset using memset
	* src/dfa.c (parse_bracket_exp): Use memset to initialize workmbc.

	dfa: spell out "unsigned int"
	* dfa.c (setbit, tstbit, clrbit, setbit_case_fold, lex, dfaoptimize,
	free_mbdata): Put "int" after unsigned.
	* dfa.h (struct position, struct dfa): Likewise.

	dfa: optimize simple character sets under UTF-8 charsets
	Only use a bitset when possible without involving MBCSET.  Testcase:
	   yes 'the quick brown fox jumps over the lazy dog' | sed 100000q | \
	     time grep -c [ABCDEFGHIJKLMNOPQRSTUVWXYZ,]

	Before: 51ms (best of three runs); after: 16ms(best of three runs).

	* src/dfa.c (parse_bracket_exp): For simple bracket expressions
	under UTF-8, use a CSET.

	dfa: speed up handling of brackets
	This patch has two sides.  One is to fold the parsing of brackets in the
	single- and multi-byte cases.  The second is to leverage this change,
	and use a bitset to test for single-byte characters in the charset.
	Splitting the two would be very hard.

	Testcase:
	   yes 'the quick brown fox jumps over the lazy dog' | sed 100000q | \
	     time grep -c [ABCDEFGHIJKLMNOPQRSTUVWXYZ,]

	Before: 59ms (best of three runs); after: 51ms (best of three runs).
	Nice, but mostly providing infrastructure for the next patch.

	* src/dfa.c (setbit_case_fold): Try applying towlower/towupper.
	(looking_at): Remove.
	(FETCH_WC): New.
	(fetch_wc): Merge into FETCH_WC [MBS_SUPPORT].
	(FETCH) [MBS_SUPPORT]: Call FETCH_WC.
	(prednames, find_pred, is_blank and other predicates): Move above,
	remove K&R syntax support.
	(parse_bracket_exp): New name of parse_bracket_exp_mb, rewritten to
	include single-byte character set parsing of brackets.
	(lex): Adjust for fetch_wc->FETCH_WC change, remove single-byte
	character set parsing of brackets.
	(match_mb_charset): Test against work_mbc->cset.
	* src/dfa.h (struct mb_char_classes): Add cset.

	syntax-check: remove space-tab exception
	* .x-sc_space_tab: Remove.
	* src/dfa.c: Fix space-tab occurrence.

	THANKS: fix Jim Meyering's email address
	* THANKS: Jim is now with Red Hat.

	dfa: add missing function
	* src/dfa.c (using_utf8): New.
	(addtok_wc, free_mbdata, dfaoptimize) [!MBS_SUPPORT]: Do not define.
	(dfacomp) [!MBS_SUPPORT]: Do not call dfaoptimize.

	tests: fix typo
	* fedora: Fix typo.

	tests: use Exit
	* euc-mb: exit with "Exit 0".

	grep: remove more register keywords
	* dosbuf.c: Remove register keywords.
	* grep.c: Remove register keywords.
	* kwset.c: Remove register keywords.
	* search.c: Remove register keywords.

	dfa: run simple UTF-8 regexps as a single-byte character set
	This provides a speedup whenever fgrep is "almost" sufficient but
	not quite (e.g. grep ^abc).  This affects test cases such as
	https://savannah.gnu.org/bugs/?29117, which are already worked around
	by the line-by-line matching patch c32c04; without that patch the
	speedup can reach 1000x even on non-contrived testcases.

	* src/dfa.c (dfaoptimize): New.
	(dfacomp): Call it.

	tests: fix syntax-check failures
	* tests/case-fold-backref: Use "foo" instead of "the".
	* tests/dfaexec-multibyte: Remove trailing blanks.

	grep: remove check_multibyte_string, fix non-UTF8 missed match
	Avoid computing ahead something that can be computed lazily as efficiently
	(or more efficiently in the case of UTF-8, though this is left as TODO).
	At the same time, "soften" the rejection condition for matching in the
	middle of a multibyte sequence to fix bug 23814.

	Multibyte "grep -i" would still be very slow if it wasn't for the workaround
	patch c32c042 (grep: match multibyte charsets line-by-line when using -i,
	2010-03-08).

	* NEWS: Document bugfix.
	* src/search.c (check_multibyte_string): Rewrite as...
	(is_mb_middle): ... this.
	(EGexecute, Fexecute): Adjust.
	* tests/Makefile.am (TESTS): Add euc-mb.
	* tests/euc-mb: New testcase.

	dfa: cache MB_CUR_MAX for dfaexec
	* src/dfa.c (state_index, dfaexec): Use d->mb_cur_max.
	(dfainit): Initialize it.
	(free_mbdata): New, extracted out of dfafree.
	(dfafree): Use it.

	dfa: improve documentation of struct dfa
	* src/dfa.h (struct dfa): Reword some comments.

	tests: factor name of output files into a variable
	* tests/case-fold-backref, tests/case-fold-char-class,
	tests/case-fold-char-range, tests/case-fold-char-type,
	tests/dfaexec-multibyte: Use a variable for the output filename,
	as it is common to the grep and compare invocations.

	tests: use different output files to simplify reading failed .log files
	* tests/case-fold-backref, tests/case-fold-char-class,
	tests/case-fold-char-range, tests/case-fold-char-type: Use a different
	name for each output file from grep.
	* tests/dfaexec-multibyte: Likewise, and merge some grep invocations.

	tests: add another grep -i testcase, from bug 16179
	* tests/case-fold-backref: New.
	* tests/Makefile.am (TESTS): Add it.

	dfa: rewrite handling of multibyte case_fold lexing
	Let dfacomp do the folding to lowercase of multibyte input strings,
	and remove it from grep.c.  Input strings to kwset.c are still folded
	outside kwset.c, so we still need to do mbtolower in search.c.

	* NEWS: Document bugfixes.
	* .x-sc_cast_of_argument_to_free: Remove.
	* src/dfa.c (wctok, addtok_wc): New.
	(cur_mb_index, update_mb_len_index): Remove.
	(FETCH): Do not call it.
	(parse_bracket_exp_mb) [GREP]: Disable case-folding of ranges and
	characters.
	(addtok): Extract part to...
	(addtok_mb): ... this new function.
	(lex): Call fetch_wc in the main loop for MB_CUR_MAX > 1.  Return WCHAR
	for normal characters if MB_CUR_MAX > 1.
	(atom): Handle WCHAR instead of treating multibyte characters specially.
	Do case folding of multibyte characters here.
	(dfacomp): Remove case_fold special casing.
	* src/dfa.h (WCHAR): New.
	* src/grep.c (mb_icase_keys): Remove.
	(main): Do not call it.
	* src/search.c (kwsinit): Init transition table only for MB_CUR_MAX == 1.
	(mbtolower): New.
	(kwsincr_case): New.
	(kwsmusts): Call it instead of kwsincr.
	(check_multibyte_string): Remove.
	(check_multibyte_string_no_icase): Rename to check_multibyte_string.
	(GEAcompile, EGexecute, Fcompile): Use mbtolower instead of the old
	check_multibyte_string.
	* tests/Makefile.am (TESTS): Add case-fold-backslash-w.
	* tests/foad1.sh: Enable fixed tests.
	* tests/case-fold-backslash-w: New.

2010-03-16  Paolo Bonzini  <bonzini@gnu.org>

	grep: match multibyte charsets line-by-line when using -i
	The turtle combination -i + MB_CUR_MAX>1 requires case conversion ahead
	of time.  Avoid doing this repeatedly when many matches succeed.  Together
	with the previous changes, this fixes https://savannah.gnu.org/bugs/?29117
	and https://savannah.gnu.org/bugs/?14472.

	* NEWS: Document new speedup.
	* src/grep.c (do_execute): New.
	(grepbuf): Use it.

2010-03-15  Paolo Bonzini  <bonzini@gnu.org>

	dfa: fix handling of ranges in multibyte character sets
	* src/dfa.c (parse_bracket_exp_mb): Add separate ranges for
	lowercase and uppercase endpoints if folding case.
	* tests/Makefile.am (TESTS): Add case-fold-char-range.
	* tests/case-fold-char-range: New.

	tests: add more UTF-8 test cases
	* tests/Makefile.am (TESTS): Add spencer1-locale.
	(EXTRA_DIST): Add spencer1-locale.awk.
	* tests/spencer1-locale.awk: New.
	* tests/spencer1-locale: New.

2010-03-15  Jim Meyering  <meyering@redhat.com>

	tests: complete the renaming fedora.sh -> fedora
	* tests/Makefile.am (TESTS): Rename fedora.sh -> fedora here, too.

	* tests/fedora.sh: Rename to...
	* tests/fedora: ...this, to reflect new convention:
	Use the lack of a suffix to indicate we've converted to the new
	init.sh-using test framework.

	tests: adjust fedora.sh to handle traps more portably

	tests: adjust fedora.sh to handle traps more portably
	* tests/fedora.sh: Use "Exit", not "exit".

	tests: for each test, set an envvar to its name
	* tests/Makefile.am (TESTS_ENVIRONMENT): Set GREP_TEST_NAME for
	each test.  This is used to help make the output of hundreds of
	independent, often-parallel valgrind runs more manageable.

2010-03-14  Jim Meyering  <meyering@redhat.com>

	tests: clean up fedora.sh
	* tests/fedora.sh: Use "grep", not ${GREP}.
	Use init.sh.
	Use timeout 10, not sleep 1 (three times).
	The latter would always sleep for 3 seconds, and the test would
	fail with a false positive on a slow system or with a heavily
	instrumented (valgrind) executable.

2010-03-12  Jim Meyering  <meyering@redhat.com>

	build: avoid build failure with --enable-gcc-warnings
	* src/dfa.c: Don't include <assert.h>, now that it is not used.
	[DEBUG]: Remove #ifdef block.

2010-03-12  Paolo Bonzini  <bonzini@gnu.org>

	syntax-check: enable space-tab
	* cfg.mk (local-checks-to-skip): Enable space-tab.
	* .x-sc_space_tab: Add exceptions.
	* tests/status.sh: Fix occurrence.

	syntax-check: enable m4-quote-check
	* cfg.mk (local-checks-to-skip): Enable m4-quote-check.
	* configure.ac: Fix occurrence.

	syntax-check: enable makefile-TAB-only-indentation
	* cfg.mk (local-checks-to-skip): Enable makefile-TAB-only-indentation.
	* Makefile.am: Fix only occurrence.

	grep: fix error-message-uppercase
	* cfg.mk (local-checks-to-skip): Enable error-message-uppercase.
	* src/dfa.c (parse_bracket_exp_mb, lex, dfaparse): Fix occurrences.
	* src/search.c (Pcompile, Pexecute): Fix occurrences.

	dfa, grep: cleanup if-before-free and cast-of-argument-to-free
	* .x-sc_avoid_if_before_free: Remove.
	* .x-sc_cast_of_alloca_return_value: Remove.
	* .x-sc_cast_of_x_alloc_return_value: Remove.
	* .x-sc_cast_of_argument_to_free: Temporarily add src/search.c.
	* cfg.mk (local-checks-to-skip): Remove sc_cast_of_argument_to_free.
	* src/dfa.c (ifree): Remove.
	(dfamust, build_state, transit_state, dfafree): Do not do if-before-free,
	do not cast free argument to ptr_t or char *.
	(freelist): Call free instead of ifree.
	* src/dfa.h (ptr_t): Remove.

	dfa: remove CRANGE dead code
	The only use of CRANGE was removed by commit 193830d.  In theory it is
	more correct to do what CRANGE did, but in practice it seems like it did
	not work.

	* src/dfa.h (token): Remove CRANGE.
	* src/dfa.c (atom): Do not handle CRANGE.
	(prtok): Likewise.

	dfa: get rid of x*alloc
	* src/dfa.c: Include xalloc.h.
	(xmalloc, xrealloc, xcalloc): Remove.

	grep: cleanup one const cast
	* src/search.c (GEAcompile): Do not reuse motif when operating on the
	(const) pattern, so we can make it non-const.  Remove cast from free.

	kwset/system: remove ptr_t
	* src/kwset.h: Declare kwset using an incomplete struct type.
	* src/system.h (ptr_t): Remove.

2010-03-12  Jim Meyering  <meyering@redhat.com>

	tests: add test cases for dfaexec bug
	* tests/dfaexec-multibyte: New test.
	* tests/Makefile.am (TESTS): Add it.
	Reported by Paolo Bonzini in http://bugzilla.redhat.com/544407
	and http://bugzilla.redhat.com/544406 .

	dfa: manually merge gawk's dfaexec
	* src/dfa.c (dfaexec): Adjust API: return pointer, not offset, and
	take an "end" pointer parameter, rather than integral "size".
	Adjust comment accordingly.
	(build_state): Maintain d->newlines.
	(copytoks): Update multibyte_prop indices.
	(SKIP_REMAINS_MB_IF_INITIAL_STATE): Update a cast.
	Return NULL, rather than (size_t) -1.
	(realloc_trans_if_necessary): Realloc d->newlines.
	* src/dfa.h (struct dfa): New member, "newlines".
	(struct dfa) [GAWK]: New member, "broken".
	(dfaexec): Update prototype and copy the new comment from dfa.c.

	dfa: make search.c use the new dfaexec API

	* src/search.c: Adjust to new dfaexec API.
	Now, dfaexec returns a pointer, not an integer,
	and the third parameter is END, not buffer size.
	* src/dfa.c (dfaexec): Rewrite the function's comment.
	Don't just clobber *END.  While doing that happens to be
	fine for gawk's usage, in grep, *END usually points to the
	first byte of the next buffer.  Save the initial value,
	and restore it just before returning.
	* src/dfa.h (dfaexec): Update comment; include parameter names.

	dfa: appease static analyzers
	* src/dfa.c (transit_state_singlebyte): Call abort rather
	than returning in a "can't happen" scenario.
	This stops clang from emitting a false-positive report (I think it
	was used-uninitialized) about a caller.

2010-03-11  Jim Meyering  <meyering@redhat.com>

	dfa: do not accept [[:UPPER:]] or [[:LOWER:]] internally
	* src/dfa.c (parse_bracket_exp_mb): Those class names are not
	valid, and rejected elsewhere, so there is no point in allowing
	upper or mixed-case versions here.

	maint: remove a trailing space
	* src/search.c (EXECUTE_FCT): Remove trailing space.

	maint: remove all uses of PARAMS
	Remove most with this:
	git grep -lw PARAMS |xargs perl -pi -e 's/\bPARAMS *\((.*)\);/$1;/'
	Remove the remainder manually.

	maint: remove all uses of PARAMS
	* lib/savedir.h (PARAMS): Remove definitions manually.
	Remove the remaining ones via this command:
	  git grep -l define.PARAMS |xargs perl -ni -e '/define PARAMS/ or print'
	* src/dfa.h (PARAMS): Remove definitions.
	* src/system.h (PARAMS): Likewise.
	Remove most uses with this:
	  git grep -lw PARAMS |xargs perl -pi -e 's/\bPARAMS *\((.*)\);/$1;/'
	Remove the remainder manually.

	maint: remove now-useless prototypes
	* src/dfa.c: Remove the prototype of each static, non-recursive
	function whose definition precedes first use.

	grep: plug an inconsequential leak
	* src/grep.c (main): Plug a leak: free "keys".

	grep: avoid useless allocations for empty GREP_OPTIONS
	* src/grep.c (prepend_default_options): Ignore GREP_OPTIONS
	when it's empty, not just when it's undefined.
	There are still relatively harmless leaks when GREP_OPTIONS
	is set and non-empty.  We'll address those, eventually.

2010-03-09  Jim Meyering  <meyering@redhat.com>

	build: record build-from-clone tool requirements
	* bootstrap.conf (buildreq): This makes bootstrap fail with
	a clear explanation of the problem.  Otherwise, you'd get into
	the build process and fail with something far more cryptic.

	dfa: remove a trailing blank
	* src/dfa.c (dfaexec): No trailing blanks allowed.

	dfa: sync a tiny change from gawk
	* src/dfa.c (state_index) [MBS_SUPPORT]: Initialize .mpbs.nelem member
	unconditionally.  Also initialize .mbps.elems.

	dfa: avoid a leak (work_mbc->chars)
	* src/dfa.c (parse_bracket_exp_mb): Remove useless (and leaked MALLOC).

	doc+bootstrap: document build-from-git-clone process
	* bootstrap: Update from coreutils/gnulib.
	* README-hacking: New file, nearly identical to the one in coreutils.

2010-03-08  Paolo Bonzini  <bonzini@gnu.org>

	more work on TODO
	* TODO: More work on the first section.  Use clearer section headers.

2010-03-08  Reuben Thomas  <rrt@sc3d.org>

	bring TODO up-to-date
	* TODO: merge with TODO section of http://www.gnu.org/software/grep/devel.html
	and remove done items. Some small bits of tidying also.

2010-03-07  Paolo Bonzini  <bonzini@gnu.org>

	simplify parsing of [a-z]
	* src/dfa.c (in_coll_range): New.
	(lex): Use it instead of regcomp/regexec.

	Small refactoring in src/dfa.c
	* src/dfa.c (parse_bracket_exp_mb): Return MBCSET.
	(lex): Assign return value of parse_bracket_exp_mb to lasttok, return it.

	use do...while(0) idiom
	* dfa.c (FETCH): Wrap with do...while(0).

2010-03-06  Paolo Bonzini  <bonzini@gnu.org>

	extract common code from if/else
	* dfa.c (dfaexec): Simplify logic for MB_CUR_MAX > 1 case.

	remove register variable hacks
	* dfa.c (dfaexec): We can extract the address of a variable without fearing
	performance problems, modern compilers know better.

	remove register keywords
	* dfa.c (dfaexec): Modern compilers just ignore it.

	allow grep -Pz
	* NEWS: Document grep -P improvements.
	* src/search.c (Pcompile): Remove restriction on grep -Pz.
	* tests/pcre-z: New.
	* tests/Makefile.am (TESTS): Add pcre-z.

	fix cross-line matching in PCRE backend
	* search.c (Pexecute): Split the buffer in lines and match each line
	separately.
	* tests/fedora.sh: Add regression testsuite.

	fix formatting of NEWS
	* NEWS: fix formatting of 2.6 entries.

	fix a bug in handling of -i and character type
	* dfa.c (parse_bracket_exp_mb): Convert [[:lower:]] and [[:upper]] to
	[[:alpha:]] when folding case.
	* tests/case-fold-char-type: New file.  Test for the bug.
	* tests/Makefile.am (TESTS): Add it.
	* NEWS (Bug fixes): Mention it.

	fix previous test case change
	* tests/case-fold-char-class: Do not reset fail to 0 after first test.

2010-03-06  Mike Frysinger  <vapier@gentoo.org>

	grep(1) man page: touchup --label option
	* doc/grep.1 (--label): Don't italicize ending period.  Point to -H
	option.

2010-03-06  Paolo Bonzini  <bonzini@gnu.org>

	augment case-fold-char-class test case
	* tests/case-fold-char-class: Test matching lowercase against uppercase
	as well as vice versa.

2010-03-06  Reuben Thomas  <rrt@sc3d.org>

	doc: improve the discussion of PCRE
	* doc/grep.1: Add a sentence about Perl regular expressions,
	and point to pcresyntax(3) and pcrepattern(3).
	* doc/grep.texi: Likewise.

2010-03-05  Jim Meyering  <meyering@redhat.com>

	maint: dfa-sync: comment and dead-to-grep code: no semantic change
	* src/dfa.c: Sync a comment and some #ifdef GAWK code.

	maint: dfa-sync: don't malloc zero
	* src/dfa.c (dfacomp): Skip case_fold logic when length is zero.
	This probably "no semantic change", but does improve efficiency in
	a degenerate case.

	maint: dfa-sync: use CALLOC rather than equiv. MALLOC+initialize-loop
	* src/dfa.c (dfaanalyze): Sync from gawk.  No semantic change.

	dfa.c: add support for \s and \S
	* src/dfa.c (lex): Sync from gawk's dfa.c.

	maint: dfa-sync: add omitted array initializer
	* src/dfa.c (prednames): Add a "0" to final initializer.
	No semantic change.

	fix a bug in handling of -i and character classes
	* dfa.c (parse_bracket_exp_mb): Sync one part of this function
	from gawk's dfa.c, which was patched by Arnold D. Robbins.
	* tests/case-fold-char-class: New file.  Test for the bug.
	* tests/Makefile.am (TESTS): Add it.
	(TESTS_ENVIRONMENT): Propagate LOCALE_FR and LOCALE_FR_UTF8
	definitions into tests.
	* NEWS (Bug fixes): Mention it.

2010-03-05  Paolo Bonzini  <pbonzini@redhat.com>

	Fedora Grep regression test suite
	* tests/Makefile.am (TESTS): Add fedora.sh.
	(CLEANFILES): Add several new files.
	* tests/fedora.sh: New file, originally by Lubomir Rintel but somewhat
	rewritten to avoid bashisms.

2010-03-05  Paolo Bonzini  <bonzini@gnu.org>

	convert AUTHORS file to UTF-8
	* AUTHORS: Convert to UTF-8.

	eliminate invalid "ptr += (ptr2 - ptr1)"
	* lib/savedir.c (savedir): new_name_space and name_space do not point into
	the same object, so computing their difference is invalid.  Similarly,
	summing the difference to namep is invalid because namep and the result
	point into different objects.  Avoid this.

	fix for bug 21276
	* lib/savedir.c (isdir1): Use realloc instead of calloc.  Remove
	dead code.
	(savedir): Do not leak name_space if allocation of new_name_space fails.

2010-03-04  Jim Meyering  <meyering@redhat.com>

	tests: add a test based on an example from Paolo Bonzini
	* tests/word-multi-file: New test.
	* tests/Makefile.am (TESTS): Add it.

	doc: document release procedure
	* README-release: New file.

	build: update gnulib submodule to latest

2010-02-22  Paolo Bonzini  <bonzini@gnu.org>

	add --group-separator=FOO and --no-group-separator
	* src/grep.c (group_separator): New.
	(long_options): Add --group-separator=FOO and --no-group-separator.
	(prtext): Print group_separator instead of SEP_STR_GROUP.  Optionally
	suppress the separator altogether.
	(main) Handle GROUP_SEPARATOR_OPTION.
	* doc/grep.texi (Context control): Document it.
	* NEWS: Mention it.
	* tests/yesno.sh: Add testcases.

2010-02-21  Jim Meyering  <meyering@redhat.com>

	tests: don't use "echo -n"
	* tests/foad1.sh: Use printf, not echo -n.  The latter is not portable.
	Reported by Daniel Richman.

2010-02-08  Jim Meyering  <meyering@redhat.com>

	remove useless DJGPP-specific code
	* src/grep.c (grepfile): Remove now-useless DJGPP-specific code.
	Now, all S_IS* macros are guaranteed to be defined via gnulib.

2010-02-07  Jim Meyering  <meyering@redhat.com>

	tests: add help-version sanity tests from coreutils
	* tests/help-version: New test, from coreutils.
	* tests/Makefile.am (TESTS): Add it.
	(TESTS_ENVIRONMENT) [built_programs]: Define it.

	tests: correct TESTS_ENVIRONMENT's PATH setting
	* tests/Makefile.am (TESTS_ENVIRONMENT): Set PATH to start with
	$(abs_top_builddir)/src, so that we test the programs we've just built.

	grep: use the correct exit status (2) upon write failure, not 1
	* src/grep.c (main): Initialize exit_failure to EXIT_TROUBLE.
	* NEWS (Bug fixes): Mention this fix.

	maint: enable the prohibit_magic_number_exit syntax check
	* cfg.mk (local-checks-to-skip): Remove sc_prohibit_magic_number_exit,
	to enable that check.
	* src/system.h (EXIT_TROUBLE): Define.
	* src/grep.c: Use symbolic names, EXIT_SUCCESS, EXIT_FAILURE, and
	EXIT_TROUBLE, not 0, 1, 2.
	* src/search.c: Likewise.
	* src/vms_fab.c (string): Likewise.

2010-02-05  Jim Meyering  <meyering@redhat.com>

	doc: adjust NEWS item
	* NEWS: Correct a description.

2010-02-04  Jim Meyering  <meyering@redhat.com>

	tests: exercise surprising -m1 vs. --context behavior
	* tests/max-count-vs-context: New test.  Exercise the surprising,
	but documented, behavior reported by Markus Jochim in
	http://savannah.gnu.org/bugs/?28588.
	* tests/Makefile.am (TESTS): Add it.

2010-02-03  Jim Meyering  <meyering@redhat.com>

	tests: use init.sh from gnulib
	* tests/init.sh: New file, from gnulib.
	* tests/Makefile.am (EXTRA_DIST): Add it.
	(TESTS_ENVIRONMENT): Add variables and features.
	(VERBOSE): Define.

	maint: remove unused Makefile rule
	* tests/Makefile.am (dist-hook): Remove rule.  No longer needed.

	maint: adjust formatting in tests/Makefile.am
	* tests/Makefile.am (TESTS, CLEANFILES): Align and sort.

	build: avoid warnings in gnulib-supplied regex files
	Now that we enable more warnings in lib/, we choose
	to avoid some via patches applied by bootstrap, using
	files in the gl/ hierarchy.  Other, less-important
	warnings are avoided simply by turning off the
	-Wold-style-definition option and using a slightly
	relaxed set of warnings $(GNULIB_WARN_CFLAGS) in lib/.
	* gl/lib/regcomp.c.diff: Avoid warnings.
	* gl/lib/regex_internal.c.diff: Likewise.
	* gl/lib/regex_internal.h.diff: Likewise.
	* gl/lib/regexec.c.diff: Likewise.
	* configure.ac (GNULIB_PORTCHECK): Disable only -Wold-style-definition.
	* lib/Makefile.am (AM_CFLAGS): Use $(GNULIB_WARN_CFLAGS) rather
	than the slightly more strict $(WARN_CFLAGS).

	tests: adjust spencer #37 to pass with gnulib's regex code
	* tests/spencer1.tests: Change #37 to expect an exit status of 2, not 1.
	grep 'a[b-a]' reports "Invalid range end".

	maint: use regex from gnulib, rather than our bit-rotting one
	* bootstrap.conf (gnulib_modules): Add regex.
	* configure.ac: Don't use jm_INCLUDED_REGEX.
	Update use of cache variable.
	* lib/regex.c: Remove file.
	* lib/regex.h: Likewise.
	* m4/regex.m4: Likewise.
	* POTFILES.in: Update to match.

	build: update gnulib submodule to latest

2010-01-28  Jim Meyering  <meyering@redhat.com>

	maint: update to latest gnulib; adjust cfg.mk
	* gnulib: Update submodule to latest.
	* cfg.mk (old_NEWS_hash): Update to reflect NEWS Copyright line change.

2010-01-06  Jim Meyering  <meyering@redhat.com>

	maint: avoid old jm_* macros
	There were jm_* macros here, until very recently.
	* cfg.mk (sc_prohibit_jm_in_m4): New rule, from coreutils.

	maint: remove decl.m4
	* m4/decl.m4: Remove unused file.

	maint: rely on gnulib's new isdir.h
	* src/grep.c: Include "isdir.h".
	* src/system.h: Remove declaration of isdir.

	build: rename local to avoid shadowing global, dfa
	* src/dfa.c (dfamust): Rename parameter: s/dfa/d/.

	build: avoid warning from -Wmissing-prototypes
	* src/dfa.c (match_mb_charset): Declare to be static.

	build: avoid shadowing warning for "link"
	* src/kwset.c (link): Define to kwset_link, to avoid shadowing
	the function.

	build: avoid shadowing warning for unused "rs"
	* src/dfa.c (transit_state): Remove dead stores;
	move a declaration "down".
	Ignore transit_state_consume_1char return value.

	build: avoid shadowing warnings
	* src/dfa.c (match_mb_charset): Rename parameter: s/index/idx/.
	(check_matching_with_multibyte_ops, match_anychar): Likewise.

	build: avoid warning about unused definition of N_
	* src/dfa.c (N_): Remove unused definition.

	build: avoid format-string warnings
	* src/search.c (dfaerror): Use literal "%s" as format string.
	(kwsmusts, GEAcompile): Likewise.
	(Pcompile): Likewise.

	build: add configure-time --enable-gcc-warnings option; avoid warnings
	* bootstrap.conf (gnulib_modules): Add "manywarnings" module.
	* configure.ac: Add --enable-gcc-warnings, derived from code in bison.
	* src/Makefile.am (AM_CFLAGS): Set to $(WARN_CFLAGS) $(WERROR_CFLAGS)
	* lib/Makefile.am (AM_CFLAGS): Likewise, but append.

	build: remove now-useless -I../intl option
	* src/Makefile.am (INCLUDES): Remove -I../intl, now that intl is gone.

	maint: avoid more warnings
	* src/grep.c (MAX): Remove definition of unused macro.
	(usage): Declare with __attribute__ ((noreturn)).
	Split long strings into chunks of length < 509.

	fix a possible bug: remove errant semicolon
	* src/grep.c (prline): Remove erroneous semicolon-after-if-expr.

	maint: avoid compilation warnings
	* bootstrap.conf (gnulib_modules): Add ignore-value.
	* src/search.c (check_multibyte_string_no_icase): A variant of
	check_multibyte_string that does *not* convert case, and hence
	does not modify its BUF parameter.
	(check_multibyte_string): Use xcalloc in place of xmalloc+memset.
	Use ignore_value to ignore the return value from wcrtomb.  This is
	ok, since we know the input is a valid upper case wide character.
	(Fexecute, EGexecute): Update callers of check_multibyte_string
	to use both it and check_multibyte_string_no_icase.

	maint: avoid warnings about unused fwrite return value
	* bootstrap.conf (gnulib_modules): Add unlocked-io.
	* src/system.h: Include "unlocked-io.h".

	maint: remove {m4,lib}/.gitignore; they were undergoing too much churn
	* .gitignore: Ignore all of m4/* except m4/djgpp.m4
	and all of lib/* except Makefile.am, savedir.c and savedir.h.
	* m4/.gitignore: Remove file.
	* lib/.gitignore: Remove file.

2010-01-05  Jim Meyering  <meyering@redhat.com>

	build: run gnulib's tests, too
	* Makefile.am (SUBDIRS): Add gnulib-tests.
	* gnulib-tests/Makefile.am: New file.
	* bootstrap.conf (bootstrap_epilogue): New function, from coreutils.
	(gnulib_tool_option_extras): Define.
	* configure.ac: Add gnulib-tests/Makefile.

2010-01-03  Jim Meyering  <meyering@redhat.com>

	maint: record update-copyright options for this package
	* cfg.mk: Next time, just run "make update-copyright".

2010-01-01  Jim Meyering  <meyering@redhat.com>

	maint: update all FSF copyright year lists to include 2010
	Use this command:
	git ls-files |grep -vE '^(\..*|COPYING|gnulib)$' |xargs \
	env UPDATE_COPYRIGHT_USE_INTERVALS=1 build-aux/update-copyright

2009-12-23  Jim Meyering  <meyering@redhat.com>

	fix multi-byte-locale read-beyond-end-of-buffer error
	Avoid read-beyond-end-of-buffer errors, evoked by running this:
	LC_ALL=en_US.UTF-8 valgrind src/grep -f <(printf 'a\nb\n') <(echo c)

	Conditional jump or move depends on uninitialised value(s)
	   at 0x78136D: __gconv_transform_utf8_internal (in /lib/libc-2.11.so)
	   by 0x7E7232: mbrtowc (in /lib/libc-2.11.so)
	   by 0x8055773: dfaexec (dfa.c:2816)
	   by 0x804D7B0: EGexecute (search.c:353)
	   by 0x804ACD8: grepbuf (grep.c:1036)
	   by 0x804B023: grep (grep.c:1156)
	   by 0x804B460: grepfile (grep.c:1287)
	   by 0x804CF0D: main (grep.c:2282)

	Conditional jump or move depends on uninitialised value(s)
	   at 0x7E7248: mbrtowc (in /lib/libc-2.11.so)
	   by 0x8055773: dfaexec (dfa.c:2816)
	   by 0x804D7B0: EGexecute (search.c:353)
	   by 0x804ACD8: grepbuf (grep.c:1036)
	   by 0x804B023: grep (grep.c:1156)
	   by 0x804B460: grepfile (grep.c:1287)
	   by 0x804CF0D: main (grep.c:2282)

	* src/dfa.c (dfaexec) [MBS_SUPPORT]: Do not access one byte beyond
	end of buffer.

	build: update gnulib submodule to latest

2009-12-23  Paolo Bonzini  <bonzini@gnu.org>

	Speed up insert.
	Suggested by Johan Walles <johan.walles@gmail.com> (bug 23354).

	* src/dfa.c (insert): Use binary search.

2009-12-23  Johan Walles  <johan.walles@gmail.com>

	Decrease epsclosure memory usage
	Fixes bug 23321.

	* src/dfa.c (epsclosure): Make visited an array of char.

2009-12-22  Paolo Bonzini  <bonzini@gnu.org>

	Make 'grep -1 -2' and 'grep -1v2' equivalent to grep -2
	Fixes bug 12128.

	* src/grep.c (get_nondigit_option): Reset the buffer every time
	a non-digit option is found or a new argument is started.

	Improve description of --label
	Fixes bug 22681.

	* doc/grep.1 (--label): Use -H in the example, improve wording.
	* doc/grep.texi (Output Line Prefix Control): Likewise.

	Avoid using an invalid memchr result.
	Related to bug 13161.  I cannot find a testcase, but it is better to be
	defensive considering that these bug were found in the past.

	* src/search.c (EGexecute, Fexecute): Check for memchr return values.

2009-12-11  Jim Meyering  <meyering@redhat.com>

	build: update gnulib submodule to latest

2009-12-04  Jim Meyering  <meyering@redhat.com>

	maint: enable prohibit_have_config_h check
	* cfg.mk (local-checks-to-skip): Enable sc_prohibit_have_config_h
	* lib/regex.c: Remove useless cpp test of HAVE_CONFIG_H.
	* lib/savedir.c: Likewise.
	* src/grep.c: Likewise.
	* src/kwset.c: Likewise.
	* src/search.c: Likewise.

	maint: enable cast_of_x_alloc_return_value check
	* cfg.mk (local-checks-to-skip): Enable sc_cast_of_x_alloc_return_value.
	* .x-sc_cast_of_x_alloc_return_value:
	* src/dfa.c (CALLOC, MALLOC, REALLOC): Remove casts.
	* src/dosbuf.c (undossify_input): Likewise.
	* src/grep.c (print_line_middle, prepend_default_options): Likewise.

	maint: enable cast_of_alloca_return_value check
	* cfg.mk (local-checks-to-skip): Enable sc_cast_of_alloca_return_value.
	* .x-sc_cast_of_alloca_return_value: New file.

2009-12-04  Paolo Bonzini  <bonzini@gnu.org>

	fix "grep -Ff" on CRLF-terminated files
	* src/search.c (Fcompile) [HAVE_DOS_FILE_CONTENTS]: Recognize \r\n as
	a line terminator.

	fix compilation with included regex
	* Makefile.am (libgreputils_a_DEPENDENCIES): New.

	switch to pkg-config for PCRE detection
	* configure.ac: use pkg-config to detect PCRE
	* src/Makefile.am (grep_LDADD): link grep with PCRE_LIBS

2009-12-04  Jim Meyering  <meyering@redhat.com>

	maint: remove "missing" script
	* missing: Remove now-unused file.

	maint: make .gitignore ignore more
	* .gitignore: Ignore more.

	maint: enable useless-if-before-free check
	* cfg.mk (local-checks-to-skip): Enable sc_avoid_if_before_free.
	* .x-sc_avoid_if_before_free: New file.  Exempt regex.c and dfa.c,
	in case anyone ever tries to merge their contents with other versions.
	* src/grep.c (print_line_middle, grepdir): Remove useless if-before-free.
	* src/search.c (IF_BK, EXECUTE_FCT): Likewise.

	maint: enable po-check
	* cfg.mk (local-checks-to-skip): Enable sc_po_check.
	* po/POTFILES.in: Sort and update.

2009-12-03  Paolo Bonzini  <bonzini@gnu.org>

	update gnulib, fixing missing inclusion of stdbool.h
	* gnulib: Update.

2009-11-30  Jim Meyering  <meyering@redhat.com>

	maint: enable two checks
	* cfg.mk (local-checks-to-skip): Enable two:
	sc_prohibit_xalloc_without_use sc_two_space_separator_in_usage
	* src/grep.c (usage): Conform: use two spaces, not 1.
	* src/kwset.c (malloc): Define as a function-macro so that the
	syntax-check rule sees that we are indeed using xmalloc here.

	maint: enable makefile_path_separator check
	* cfg.mk (local-checks-to-skip): Enable sc_makefile_path_separator_check,
	now that the sole offender, an old po/Makefile.in.in, is gone.

	maint: remove now-generated file: po/Makefile.in.in
	* po/Makefile.in.in: Remove file, now generated via bootstrap.

	maint: enable makefile @...@ check
	* cfg.mk (local-checks-to-skip): Enable sc_makefile_check.
	* lib/Makefile.am (libgreputils_a_LIBADD): Use $(...), rather than
	anachronistic @...@ notation.
	* src/Makefile.am (LDADD): Likewise.
	* tests/Makefile.am (AWK): Remove definition.

	maint: enable trailing_blank check
	* cfg.mk (local-checks-to-skip): Enable sc_trailing_blank.
	* AUTHORS: Remove trailing blanks.
	* COPYING: Likewise.
	* README: Likewise.
	* README-alpha: Likewise.
	* README-boot: Likewise.
	* THANKS: Likewise.
	* TODO: Likewise.
	* src/dfa.c: Likewise.
	* src/mbsupport.h: Likewise.
	* tests/backref.sh: Likewise.
	* tests/file.sh: Likewise.
	* tests/options.sh: Likewise.
	* tests/tests: Likewise.
	* vms/README: Likewise.
	* vms/make.com: Likewise.

	maint: enable unmarked_diagnostics check
	* cfg.mk (local-checks-to-skip): Enable sc_unmarked_diagnostics
	* src/grep.c (fillbuf): Mark a diagnostic for translation.
	(reset): Likewise.

	maint: enable require_config_h checks
	* cfg.mk (local-checks-to-skip): Enable sc_require_config_h
	and sc_require_config_h_first.
	* src/dosbuf.c: Include <config.h>.
	* src/vms_fab.c: Likewise.
	* .x-sc_require_config_h: New file: list the exceptions.
	* .x-sc_require_config_h_first: Likewise.

	maint: use gnulib's progname module; enable set_program_name check
	* bootstrap.conf (gnulib_modules): Add progname.
	* src/grep.c: Include "progname.h".
	(program_name): Remove declaration.
	(main): Call set_program_name.
	* cfg.mk (local-checks-to-skip): Add sc_program_name.

	maint: enable "file system" check
	* cfg.mk (local-checks-to-skip): Enable sc_file_system.
	* lib/savedir.c (savedir): Tweak spelling.  Remove trailing blanks.

	maint: enable immutable_NEWS check
	* NEWS: Move copyright to the bottom.
	Use the format required by release-related tools.
	* .prev-version: New file.
	* cfg.mk (old_NEWS_hash): Define.
	(local-checks-to-skip): Enable check: sc_immutable_NEWS.

	maint: disable the many failing syntax-checks
	* cfg.mk: New file.
	(local-checks-to-skip): Define to the list of disabled rules.
	Subsequent change-sets will enable them, one by one.

	build: require automake-1.11, enable silent-rules, parallel tests, xz
	* configure.ac (AM_INIT_AUTOMAKE): Create xz-compressed tarballs,
	not bzip2-compressed ones.  Enable automake's silent-rules,
	parallel tests, and test PASS/FAIL coloring options.
	Use AC_CONFIG_HEADERS, not AM_CONFIG_HEADER.  Quote the argument.

	build: use git-version-gen for inter-release version strings
	* configure.ac (AC_INIT): Use git-version-gen.

	build: add several build- and release-related gnulib modules
	* bootstrap.conf (gnulib_modules): Add announce-gen update-copyright
	do-release-commit-and-tag git-version-gen gnu-web-doc-update
	gnupload maintainer-makefile useless-if-before-free

	build: adapt to the newer closeout module from gnulib
	* src/grep.c: Include "exitfail.h".
	(main) [-q]: Set the global variable, exit_failure, rather than
	calling the now-removed close_stdout_set_file_name function.

	build: adapt to the newer exclude API we now get from gnulib
	* src/grep.c (main): Adapt to newer exclude.c: add EXCLUDE_WILDCARDS as
	the new "option" argument in calls to add_exclude and add_exclude_file.

	build: get more lib/* files from gnulib, adjust savedir
	* bootstrap.conf (gnulib_modules): Add the following:
	closeout exclude hard-locale isdir strtoumax.
	* lib/.gitignore, m4/.gitignore: Update.
	* lib/closeout.c, lib/closeout.h: Remove.
	* lib/exclude.c, lib/exclude.h: Remove.
	* lib/hard-locale.c, lib/hard-locale.h: Remove.
	* lib/strtoumax.c: Remove.
	* lib/isdir.c: Remove.
	* lib/Makefile.am: Remove here, too.
	* lib/savedir.c: Adapt to new exclude module:
	s/excluded_filename/excluded_file_name/ and remove 3rd argument.

	build: update gnulib submodule to latest

	maint: generate ChangeLog from git logs
	* Makefile.am (dist-hook, gen-ChangeLog): New rules.
	* bootstrap.conf (gnulib_modules): Add gitlog-to-changelog.
	Ensure that ChangeLog exists.
	* ChangeLog-2009: Rename from ChangeLog
	* ChangeLog: Remove file.
	* .gitignore: Add ChangeLog.

	maint: list gnulib modules one per line
	* bootstrap.conf (gnulib_modules): List them one per line.

2009-11-30  Tony Abou-Assaleh  <taa@acm.org>

	Acknowledge new maintainers, update README-alpha
	* AUTHORS: new maintainers added
	* THANKS: same
	* README-alpha: change CVS references to Git
