Сабж. Changelog:
2016-12-06 Jim Meyering <meyering@fb.com>
version 2.27
* NEWS: Record release date.
2016-11-29 Jim Meyering <meyering@fb.com>
grep: fix DFA-induced infloop
* gnulib: Update to latest, for the DFA infloop fix.
* tests/dfa-infloop: New test, to trigger an infinite loop
in the DFA matcher.
* tests/Makefile.am (TESTS): Add it.
2016-11-28 Jim Meyering <meyering@fb.com>
tests: use "returns_ N env VAR=val ..."
rather than "VAR=val returns_ N ..."
Some shells do not propagate envvar settings through our use
of the "returns_" function, so set any envvar via use of "env".
This was an issue at least on Ubuntu and Debian-based systems,
presumably due to their common use of "dash" as /bin/sh.
Reported by Assaf Gordon.
* tests/char-class-multibyte: As above.
* tests/euc-mb: Likewise.
* tests/false-match-mb-non-utf8: Likewise.
* tests/pcre-infloop: Likewise.
* tests/pcre-jitstack: Likewise.
* tests/sjis-mb: Likewise.
* tests/warn-char-classes: Likewise.
2016-11-28 Paul Eggert <eggert@cs.ucla.edu>
tests: revert check for unibyte French range bug
The test wasn't portable, as it assumed that rational ranges
were not in effect. Problem reported by Eric Blake (Bug#25048#8).
There doesn't seem to be a portable way to do the test, so omit it.
* tests/init.cfg, tests/unibyte-bracket-expr:
Revert previous change.
build: update gnulib submodule to latest
2016-11-27 Jim Meyering <meyering@fb.com>
grep: avoid false matches in non-UTF8 multibyte locales
* gnulib: Update to latest, for the dfa.c fix.
* NEWS (Bug fixes): Mention it.
* tests/false-match-mb-non-utf8: New file, with tests for this.
Based on tests from Stephane Chazelas.
* tests/Makefile.am (TESTS): Add it.
Introduced by commit v2.18-54-g3ef4c8e, a change that made grep use
its DFA matcher more aggressively. The malfunction arises only with
the DFA matcher, not with regex.
Reported by Stephane Chazelas in https://bugs.gnu.org/24975
2016-11-20 Paul Eggert <eggert@cs.ucla.edu>
tests: check for unibyte French range bug
Problem reported by Stephane Chazelas (Bug#24973).
This bug was fixed in Gnulib.
* NEWS: Document the fix.
* tests/init.cfg (require_ru_RU_koi8_r): Remove.
* tests/unibyte-bracket-expr: Add a test for the bug.
Call get-mb-cur-max directly instead of bothering with
require_ru_RU_koi8_r.
build: update gnulib submodule to latest
2016-11-19 Paul Eggert <eggert@cs.ucla.edu>
grep: further -P performance fix
Problem reported by Stephane Chazelas in:
http://bugs.gnu.org/22655#103
* src/pcresearch.c (Pexecute): Set the subject to the start of
each line as it is found.
grep: -P no longer uses PCRE_MULTILINE
This reverts commit f6603c4e1e04dbb87a7232c4b44acc6afdf65fef,
as the extra performance is not worth the trouble for PCRE users.
Problem reported by Stephane Chazelas in:
http://bugs.gnu.org/22655#103
* NEWS: Document this and the next patch.
* src/dfasearch.c (EGexecute):
* src/grep.c (execute_fp_t):
* src/kwsearch.c (Fexecute):
* src/pcresearch.c (Pexecute):
First arg is now a const pointer again.
* src/grep.c (buf_has_encoding_errors): Now static.
* src/grep.h (buf_has_encoding_errors): Remove decl.
* src/search.h: Adjust decls.
* src/pcresearch.c (reflags): Remove. All uses removed.
(Pcompile, Pexecute): Do not use PCRE_MULTILINE.
2016-11-19 Jim Meyering <meyering@fb.com>
doc: fix a doubled "the"
* doc/grep.texi (--perl-regexp): s/the\nthe/the/
2016-11-19 Paul Eggert <eggert@cs.ucla.edu>
grep: fix -zxP bug
* NEWS: Document this.
* src/pcresearch.c (Pcompile): Search a line at a time if -x is
used, since -x uses ^ and $.
* tests/pcre: Test this.
grep: simplify by using PRIuMAX
* configure.ac (HAVE_PRINTF_C99_SIZES): Remove; no longer needed.
* src/grep.c (print_offset): Simplify (Bug#24451).
grep: -T now adjusts number widths for worst case
* NEWS, doc/grep.texi (Output Line Prefix Control):
Document this (Bug#24451).
* src/grep.c (offset_width): New static var.
(print_offset): Use it instead of arg. All callers changed.
(grep): Set it.
* tests/initial-tab: Test this.
grep: -T no longer outputs BS
* NEWS: Document this (Bug#24451).
* src/grep.c (print_line_head): Do not attempt to backspace output.
* tests/initial-tab: New test.
* tests/Makefile.am (TESTS): Add it.
grep: document -oz better
* doc/grep.texi (General Output Control, Usage): Tweak (Bug#24961).
grep: fix performance typo with -P
Reported by Zev Weiss in: http://bugs.gnu.org/22655#88
* src/pcresearch.c (Pcompile): Initialize reflags.
tests: use "returns_" rather than "$?"
* tests/grep-dev-null-out: Use "returns_ 124" rather than testing
$? = 124.
grep -f /dev/null -L PAT FILE outputs FILE
* NEWS: Document this.
* src/grep.c (main): Do not exit right away with -L.
* tests/skip-read: Test for the fix.
grep: tune -f /dev/null
* src/grep.c (main): Do the -f /dev/null early-exit checks before
more-expensive tests that involve syscalls.
grep: treat -f /dev/null like -m0
* NEWS: Document this.
* src/grep.c (main): With -f /dev/null, don't bother to read the
input. This is what FreeBSD grep does.
* tests/Makefile.am (TESTS): Add skip-read.
* tests/skip-read: New file.
grep: avoid O(N**2) buffer reallocation
* src/grep.c (main): Use x2realloc to avoid O(N**2) performance as
pattern buffers grow.
grep: avoid unnecessary gettext call
Translate "(standard input)" lazily.
* src/grep.c (input_filename): New function.
(suppressible_error): Remove 1st arg, since it is always
input_filename (). All callers changed.
(suppressible_error, print_filename, grep, grepdesc): Use it.
(grep_command_line_arg): Set filename to NULL if standard
input has no label. Often, this avoids all calls to gettext,
which can be a win as the first call can be expensive.
grep: drain the input pipe faster
* src/grep.c (dev_null_output): Now static.
(drain_input): New function, using 'splice' if that makes sense.
(finalize_input): Use it.
(main): Omit now-unnecessary initialization.
grep: scale back /dev/null speedup
The performance improvement when output is /dev/null (commit
af6af288eac28951b5eee1eaaf373e22b2193b7b dated 2016-05-01)
breaks scripts that run "PROGRAM | grep PATTERN >/dev/null"
where PROGRAM dies when writing into a broken pipe.
Suppress the improvement if standard input is not seekable.
Problem reported by Gary Johnson (Bug#24941).
* NEWS: Document this.
* src/grep.c (seek_failed): New static var.
(seek_data_failed): Move decl earlier, to be next to seek_failed.
(file_must_have_nulls): Skip useless syscalls if seek_failed.
Lessen source-code nesting.
(reset): Set seek_failed and seek_data_failed.
Try lseek even on non-regular files.
(grep): New arg INEOF. All callers changed.
Do not clear seek_data_failed here, since 'reset' now does this.
(finalize_input): New static function.
(grepdesc): Use it.
(main): Do not exit on first match merely because output is
/dev/null.
* tests/grep-dev-null-out: Adjust to new behavior.
grep: improve diagnostic on lseek failure
* src/grep.c (reset): Mention the file name in the (unlikely)
chance of an lseek failure.
grep: avoid unnecessary isatty calls
This fixes an inefficiency that was mistakenly introduced a while
back, when the macro SET_BINARY became defined on all platforms.
* src/grep.c (grepdesc, main): Do not unecessarily call isatty on
POSIXish platforms.
grep: -Pz no longer rejects ^, $
Problem reported by Stephane Chazelas (Bug#22655).
* NEWS: Document this.
* doc/grep.texi (grep Programs): Warn about -Pz.
* src/pcresearch.c (reflags): New static var.
(multibyte_locale): Remove static var; now local to Pcompile.
(Pcompile): Check for (? and (* too. Set reflags instead of
dying when problematic operators are found.
(Pexecute): Use reflags to decide whether searches should
be multiline.
* tests/pcre: Test new behavior.
2016-11-14 Jim Meyering <meyering@fb.com>
tests: use "returns_" rather than explicit comparison with "$?"
* tests/sjis-mb (encode): Rearrange to emit desired input into
a file, rather than piping directly into grep. That permits
the use of returns_ 1 to verify timeout's exit status.
* tests/euc-mb: Use "returns_ 1" rather than testing $? = 1
* tests/char-class-multibyte: Likewise.
* tests/dfa-heap-overrun: Likewise.
* tests/encoding-error: Likewise.
* tests/fedora: Likewise.
* tests/grep-dev-null: Likewise.
* tests/init.cfg (envvar_check_fail): Likewise.
* tests/kwset-abuse: Likewise.
* tests/mb-non-UTF8-overrun: Likewise.
* tests/multibyte-white-space: Likewise.
* tests/pcre-infloop: Likewise.
* tests/surrogate-pair: Likewise.
* tests/warn-char-classes: Likewise.
Do the same for other values:
* tests/backref-multibyte-slow: Likewise.
* tests/euc-mb: Likewise.
* tests/pcre-abort: Likewise.
* tests/pcre-jitstack: Likewise.
* tests/repetition-overflow: Likewise.
* tests/reversed-range-endpoints: Likewise.
* tests/warn-char-classes: Likewise.
2016-10-26 Jim Meyering <meyering@fb.com>
doc: grep builds on HP-UX once again
* NEWS (Bug fixes): Mention the HP-UX fix.
gnulib: update to latest, for getprogname HPUX port
2016-10-22 Mark Veltzer <mark.veltzer@gmail.com>
ignore coverage generated files
ignore ar-lib in build-aux
2016-10-20 Zev Weiss <zev@bewilderbeest.net>
grep: use 'j' intmax_t printf length modifier if supported
* configure.ac: Use gl_PRINTF_SIZES_C99 to test printf and
(conditionally) define HAVE_PRINTF_C99_SIZES.
* src/grep.c (print_offset): Use printf("%j...") for printing
[u]intmax_t if HAVE_PRINTF_C99_SIZES is defined; otherwise continue
using the existing hand-rolled loop.
2016-10-15 Jim Meyering <meyering@fb.com>
build: distribute new file, die.h, so "make distcheck" passes
* src/Makefile.am (grep_SOURCES): Add die.h.
Also, sort these file names.
2016-10-10 Paul Eggert <eggert@cs.ucla.edu>
build: update gnulib submodule to latest
2016-10-09 Jim Meyering <meyering@fb.com>
maint: die.h: add the "#define ..." part of double inclusion guard
* src/die.h (DIE_H): Define to 1.
2016-10-04 Paul Eggert <eggert@cs.ucla.edu>
grep: don't assume stdbool.h before die call
* src/die.h: Include stdbool.h, since 'die' uses 'false'
grep: die more systematically
* src/die.h: New file.
* src/dfasearch.c, src/grep.c, src/pcresearch.c: Include die.h.
* src/dfasearch.c (dfaerror):
* src/grep.c (context_length_arg, add_count, prline, setmatcher, main):
* src/pcresearch.c (jit_exec, Pcompile, Pexecute):
Use 'die' instead of 'error' when exiting.
* src/pcresearch.c: Do not include verify.h.
(die): Remove; now in die.h.
* src/search.h: Do not include error.h here, since this file does
not use anything defined in error.h. Instead, dfasearch.c, which
uses error.h's symbols, now includes error.h directly.
