changelog

linux平台中

	(binary_files): New var.
	* src/system.h (TYPE_SIGNED, TYPE_MINIMUM, TYPE_MAXIMUM, CHAR_MAX):
	New macros.
	(INT_MAX, UCHAR_MAX): Define in terms of TYPE_MAXIMUM.

2000-01-04  Paul Eggert

	* savedir.c (savedir): Don't store past the end of an array if
	name_size is zero and the directory is empty.
	Reported by Dima Barsky <[e-mail]>.

1999-12-03  Alain Magloire

	* 2.4 Release.

1999-11-18  Paul Eggert

	* m4/largefile.m4 (AC_SYS_LARGEFILE_FLAGS): Work around a
	problem with the QNX 4.25 shell, which doesn't propagate exit
	status of failed commands inside shell assignments.

1999-11-13  Eli Zaretskii

	* doc/grep.texi: Minor markup and spelling corrections.  Use
	@noindent where appropriate.

	* PATCHES-{AM,AC}: rename to PATCHES.{AM,AC}

1999-11-12  Eli Zaretskii

	doc/grep.texi: Minor fixes and typos corrected.
	djgpp/README: Updated version.

1999-11-07  Paul Eggert

	* src/grep.c (usage): Fix misspelling.

1999-11-07  Paul Eggert

	Don't assume that the C library has re_set_syntax and friends.
	* src/Makefile.am (base_sources): Add regex.c, regex.h.
	(EXTRA_DIST): Remove regex.c, regex.h.

	* src/grep.c (prtext): Use out_quiet, not not_text, to decide
	whether to set pending to zero at the end.
	(not_text): Remove static variable, undoing latest change.
	(grep): Likewise.

	* doc/grep.texi: Tighten up the text, and fix some minor
	spelling and usage errors.  Use @enumerate rather than @table
	@samp, since it's better for Q&A format.  Add cross
	references.

1999-11-01 Alain Magloire

	* src/search.c: Use the more portable [[:alnum:]]
	to define a word instead of Ascii dependent [0-9A-Za-z]
	* src/grep.c: make not_text global to not display text when
	the context switches -A/-B/-C are use on binary files.
	* make grep-2.3g available for testing.
	* configure.in: drop support for --without-included-regex.
	This was generating bogus bug reports, since many GNU/Linux
	users have different version of glibc.  And glibc maintainers
	decided to drop k&r support.

1999-11-01 Arnold D. Robbins

	* regex.c (init_syntax_once): move below definition of
	ISALNUM etc., then use ISALNUM to init the table, so that
	the word ops will work if i18n'ed.
	(SYNTAX): And subscript with 0xFF for Latin-1 characters.

1999-10-26  Alain Magloire

	* src/regex.c: Merge changes from GNU lib C.
	* Updated the *.po files

1999-10-26  Paul Eggert

	* src/grep.c (fillbuf): Don't report buffer size overflow if
	newalloc == save and maxalloc == save.  This can happen
	e.g. when reading a large page-aligned file that contains
	no newlines.

1999-10-21  Paul Eggert

	* src/grep.c (usage): Give example.  Clarify -F.
	Explain exit status more clearly.

1999-10-12  Paul Eggert

	* doc/grep.texi: Shorten the commentary about egrep and {.
	"BSD grep" -> "traditional grep".
	* doc/grep.1: Match recent changes to grep.texi.

1999-10-11  Paul Eggert

	* NEWS, doc/grep.1, doc/grep.texi: New option --mmap.
	* src/grep.c (mmap_option): New variable.
	(long_options, reset, usage): Add --mmap.
	Default is now read, not mmap.

	* doc/grep.1: Document -Z or --null.

1999-10-11  Paul Eggert

	* doc/grep.texi: Fix texinfo glitches.  POSIX -> POSIX.2 where
	appropriate.

1999-10-11  Paul Eggert

	* acconfig.h (ssize_t): New #undef.

	* configure.in (AC_CHECK_TYPE): Add ssize_t.

	* src/grep.c (PREFERRED_SAVE_FACTOR): New macro.
	(reset): If the buffer has already been allocated, set bufsalloc to
	be bufalloc / PREFERRED_SAVE_FACTOR.  This avoids problems when
	bufsalloc == bufalloc (possible after reading a large binary file).
	(reset): Use PREFERRED_SAVE_FACTOR instead of magic constant.
	Do not set bufbeg; nobody uses it.
	Always set buflim.
	Check for lseek error.
	Use SEEK_CUR, not a magic constant.
	(fillbuf): Return an error indication, not a count.
	All callers changed.
	Do not assume ssize_t fits in int.
	Use PREFERRED_SAVE_FACTOR instead of magic constant.
	Clean up mmap code.
	Do not attempt to mmap zero bytes.
	Check for lseek error.
	Use SEEK_SET, not a magic constant.
	Work correctly if read is interrupted.
	(grepfile): Work correctly if open or close is interrupted.

	* src/system.h (SEEK_SET, SEEK_CUR): New macros.

1999-10-02 Alain Magloire

	* src/regex.[ch]: upgrade from GNU lib C source tree.

	* make beta 2.3f available.

1999-10-02  Paul Eggert

	* NEWS: egrep is now equivalent to `grep -E'.
	The lower bound of an interval is not optional.
	You can specify a matcher multiple types without error.
	-u and -U are now allowed on non-DOS hosts, and have no effect.
	* doc/grep.texi: Likewise.
	* doc/grep.1: Likewise.
	Fix some troff bugs that prevented `groff' from rendering the page.

	* src/egrepmat.c, src/fgrepmat.c, src/grepmat.c (default_matcher):
	Remove.
	(matcher): Add.
	* src/grep.h (default_matcher): Remove.
	(matcher): Now exported from ?grepmat.c, not grep.c.

	* src/dfa.c (lex): If { would start an invalid interval specification,
        treat it as a normal character.
        Remove (broken) support for {,M} meaning {0,M}.
        Diagnose bogus intervals like {1,0}.
        (closure): maxrep is now -1 to indicate no limit, not zero;
        zero is a valid value for maxrep, meaning an upper bound of zero.

	* src/grep.c (short_options): New constant.
	(long_options, main): -u and -U are now supported on Unix,
	with no effect.
	(matcher): Removed; now defined by ?grepmat.c.
	(install_matcher): Renamed from setmatcher.
	(setmatcher): New function.
	(usage): Report new, more uniform option scheme.
	(main): Do not initialize matcher; ?grepmat.c now does this.
	Rely on setmatcher to catch matcher conflicts.
	Default matcher is "grep".

	* src/search.c (matchers):
	Remove "posix-egrep" matcher; no longer needed.
	(Ecompile): Likewise.
	The egrep matcher now has POSIX behavior.

	* tests/bre.tests: grep '\{' is no longer an error.
	Fix test for interval too large, and enable it.
	* tests/ere.tests: grep -E {1 is no longer an error
	Likewise for a{1, a{1a, a{1a}, a{1,x}.

1999-09-22  Paul Eggert

	* largefile.m4 (AC_SYS_LARGEFILE_FLAGS): Work around GCC
	2.95.1 bug with HP-UX 10.20.

1999-09-12  Paul Eggert

	* src/grep.c (fillbuf): Fix typo: we sometimes reported
	arithmetic overflow even when there wasn't any.

1999-09-12  Paul Eggert

	* configure.in (AC_CHECK_FUNCS): Add memmove.

	* src/system.h (S_ISREG): New macro.
	(memmove): Define if ! defined HAVE_MEMMOVE && ! defined memmove,
	not if !defined STDC_HEADERS.  This is needed for SunOS 4.1.4,
	which defines STDC_HEADERS but lacks memmove.

	* src/grep.c (bufoffset): Needed even if !defined HAVE_MMAP.
	(reset): Always fstat the file, since we always need its size if it is
	regular.
	Similarly, get the buffer offset of every regular file.
	Set bufmapped to 0 if the file's initial offset is not a multiple
	of the page size.
	(fillbuf): Calculate an upper bound on how much memory we should
	allocate only for regular files, since we don't know the sizes of
	other files.
	Don't bother to check whether the file offset is a multiple of the page
	size, since we now do that just once in `reset'.
	When an mmapped area would fall past the end of the file, trim it to
	just before instead of giving up immediately and doing a `read';
	that avoids a worst-case behavior that could read half an mmapped file.
	Fix bug when computing offsets on hosts that don't have mmap.

1999-08-27  Paul Eggert

	* src/system.h (memmove): New macro.

	* src/grep.c (page_alloc): Reallocate the old buffer instead
	of having both old and new buffers active simultaneously.
	Remove valloc debugging variant, which no longer applies.

	(fillbuf): Rejigger the buffer allocation mechanism.  The old
	mechanism could allocate more than 10*N bytes for an N-byte
	file, which was excessive.  Check for arithmetic overflow a
	bit more carefully.

1999-08-25  Paul Eggert

	* src/grep.c (grepdir):
	Don't assume that st_ino and st_dev must be integers;
	POSIX.1 allows them to be floating-point (!).

	* src/vms_fab.h (arr_ptr): `:' -> `;' to fix typo.

1999-08-18  Alain Magloire

	* 2.3e snapshot.

1999-08-18  Alain Magloire

	* src/search.c: On a CRAY J90 system running UNICOS 8.0.
	Compilation of ./src/search.c failed because the declaration of
	the variable "regex":
	  static struct re_pattern_buffer regex;
	conflicted with a previous declaration search.c #includes "system.h",
	which #includes <stdlib.h>, which declares :
        extern char *regex __((char *_Re, char *_Subject, ...));
	The declaration in search.c is local to that one source file.
	I just changed its name to something less likely to conflict.
	(I called it "regexbuf", but you could pick any name you want.)
	Excerpt email from Dean Kopesky.

1999-08-16  Paul Eggert

	Upgrade large-file support to the version used in tar and
	textutils.

	* Makefile.am (ACLOCAL_AMFLAGS): Define to be empty.
	(M4DIR, ACINCLUDE_INPUTS): New macros.
	($(srcdir)/acinclude.m4): New rule.

	* configure.in (AC_CANONICAL_HOST, AM_C_PROTOTYPES): Add.
	(AC_SYS_LARGEFILE): Renamed from AC_LFS, for compatibility
	with what should appear in the next autoconf release.

	* m4/largefile.m4: Renamed from m4/lfs.m4.

	* src/ansi2knr.1, src/ansi2knr.c, config.guess, config.sub:
	New files.  config.guess and config.sub ar needed by the new
	AC_SYS_LARGEFILE.  ansi2knr is needed by AM_C_PROTOTYPES,
	which in turn is needed by the new AC_SYS_LARGEFILE.

1999-08-16  Alain Magloire

	* 2.3d snapshot on ftp server.

1999-07-26  Paul Eggert

Several GNU tools have options to process arbitrary file names, even
file names that contain newline characters.  These include `find
-print0', `perl -0', `sort -z', and `xargs -0'.  It'd be handy if GNU
grep also processed such file names.  Here's a proposed patch to do
this, relative to grep 2.3c.  This patch introduces two options, one
for the data, and one for the file names.  (Sometimes one wants
null-terminated file names in the output, and sometimes one wants to
process lists of null-terminated strings, and these are orthogonal
axes.)

        * NEWS, doc/grep.texi: New -z or --null-data and -Z or --null options.
        * src/grep.c (long_options, usage, main): Likewise.

        * src/dfa.h (dfasyntax): New eol parameter.
        * src/dfa.c (eolbyte): New var.
        (dfasyntax): Set it from new parameter.
        (lex, dfastat, build_state, dfaexec): Use it instead of '\n'.

        * src/grep.h (eolbyte): New decl.
        * src/grep.c (eolbyte): New var.
        (nlscan, prpending, prtext, grepbuf, grep): Use it instead of '\n'.
        (filename_mask): New var.
        (prline, grepfile): Output NUL separator if filename_mask is zero.
        (grep): Look for '\200' as the hallmark of a binary file, not '\0',
        if -z or --null-data is specified, since it implies that '\0' is
        expected as text.

        * src/search.c (Gcompile, Ecompile): Pass eolbyte to dfasyntax.
        (EGexecute, Fexecute): Use eolbyte instead of '\n'.

1999-06-15 Alain Magloire

	* src/grep.c, doc/grep{1,texi} :
	--revert-match should be --invert-match.
	Correction proposed by Karl Berry.

1999-06-12 Alain Magloire

	* doc/grep.{1,texi}: add description for --with-filename.
	Noted missing by UEBAYASHI Masao.

1999-03-17 Paul Eggert

	* NEWS: Add GREP_OPTIONS.

	* doc/grep.texi: Document GREP_OPTIONS, and the other
	environment variables.  Fix doc for [:blank:], [:cntrl:], [:punct:].

	* src/grep.c (prepend_args, prepend_default_options): New functions.
	(main): Use them to implement GREP_OPTIONS.
	* src/system.h (getenv): New decl.

1999-03-16 Volker Borchert

	* configure.in: Use case case ... esac for  checking Visual C++.
	When ${CC} contains options it was not recognize.

1999-03-07 Paul Eggert

	* src/grep.c (usage): Don't report -E, -F, and -G unless we're grep.
	(main): Don't match options -E, -F, and -G unless we're grep.
	Remove after-the-fact check for options -E, -F, and -G, since
	they're no longer needed.

1999-03-05  Eli Zaretskii

	* src/grep.c (main): Print the name of the default matcher instead
	of just "grep".

1999-02-06 Alain Magloire

	* tests/*.awk : Linux users are seeing "Broken Pipe" on make check.
	The problem is that grep does not drain its stdin, thus the previous
	process in the pipeline receives a SIGPIPE.  Other shells are silent
	about this.  There is actually no failure, since the broken pipe is
	expected.  You can work around it by changing the pipeline, so that
	the input is drained, like this:
	status=`echo 'check' | { ${GREP} -E -e pattern >/dev/null 2>&1;
	echo $?; cat >/dev/null; }`; if test $status -ne $errnu then ... fi
	Excerpt email from Andreas Schwab.

1999-02-23 Alain Magloire

	* src/grep.c : Restrict the use of -E, -F, -G
	to only grep driver, Posix behaviour. {f,e}grep
	the matcher is already set. This change may brake
	scripts, warn in NEWS.

	* doc/grep.{1,texi} : -C takes arguments, upgrade manual.

	* beta 2.3a

1999-02-23 Alain Magloire