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[PATCH v2 19/29] grep: remove redundant regflags assignment under PCRE

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
May 13, 2017, 23:14 UTC
Message-ID
<20170513231509.7834-20-avarab@gmail.com>
In-Reply-To
<20170513231509.7834-1-avarab@gmail.com>

Remove a redundant assignment to the "regflags" variable. This variable is only used for POSIX regular expression matching, not when the PCRE library is used.

This redundant assignment was added as a result of copy/paste programming in commit 84befcd0a4 ("grep: add a grep.patternType configuration setting", 2012-08-03). That commit modified already working code in commit cca2c172e0 ("git-grep: do not die upon -F/-P when grep.extendedRegexp is set.", 2011-05-09) which didn't assign to regflags when under PCRE.

Revert back to that behavior, more to reduce "wait this is used under PCRE how?" confusion when reading the code, than to to save ourselves trivial CPU cycles by removing one assignment.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 grep.c | 1 -
 1 file changed, 1 deletion(-)
diff --git a/grep.c b/grep.c
index 47cee45067..59ae7809f2 100644
--- a/grep.c
+++ b/grep.c
@@ -197,7 +197,6 @@ static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, st
 	case GREP_PATTERN_TYPE_PCRE:
 		opt->fixed = 0;
 		opt->pcre = 1;
-		opt->regflags &= ~REG_EXTENDED;
 		break;
 	}
 }

-- 
2.11.0
Previous: Ævar Arnfjörð BjarmasonNext: Ævar Arnfjörð Bjarmason
Message 28 of 42 in “Easy to review grep & pre-PCRE changes”
  1. 00/29 Easy to review grep & pre-PCRE changesÆvar Arnfjörð Bjarmason, May 13, 2017
  2. 01/29 Makefile & configure: reword inaccurate comment about PCREÆvar Arnfjörð Bjarmason, May 13, 2017
  3. 02/29 grep & rev-list doc: stop promising libpcre for --perl-regexpÆvar Arnfjörð Bjarmason, May 13, 2017
  4. 04/29 log: add exhaustive tests for pattern style options & configÆvar Arnfjörð Bjarmason, May 13, 2017
  5. Junio C HamanoMay 15, 2017
  6. Ævar Arnfjörð BjarmasonMay 15, 2017
  7. Junio C HamanoMay 16, 2017
  8. 05/29 grep: add a test asserting that --perl-regexp dies when !PCREÆvar Arnfjörð Bjarmason, May 13, 2017
  9. 03/29 test-lib: rename the LIBPCRE prerequisite to PCREÆvar Arnfjörð Bjarmason, May 13, 2017
  10. 06/29 grep: add a test for backreferences in PCRE patternsÆvar Arnfjörð Bjarmason, May 13, 2017
  11. 07/29 grep: change non-ASCII -i test to stop using --debugÆvar Arnfjörð Bjarmason, May 13, 2017
  12. 08/29 grep: add tests for --threads=N and grep.threadsÆvar Arnfjörð Bjarmason, May 13, 2017
  13. 09/29 grep: amend submodule recursion test for regex engine testingÆvar Arnfjörð Bjarmason, May 13, 2017
  14. 10/29 grep: add tests for grep pattern types being passed to submodulesÆvar Arnfjörð Bjarmason, May 13, 2017
  15. 11/29 grep: add a test helper function for less verbose -f \0 testsÆvar Arnfjörð Bjarmason, May 13, 2017
  16. 12/29 grep: prepare for testing binary regexes containing rx metacharactersÆvar Arnfjörð Bjarmason, May 13, 2017
  17. 13/29 grep: add tests to fix blind spots with \0 patternsÆvar Arnfjörð Bjarmason, May 13, 2017
  18. 14/29 perf: add a GIT_PERF_MAKE_COMMAND for when *_MAKE_OPTS won't doÆvar Arnfjörð Bjarmason, May 13, 2017
  19. 15/29 perf: emit progress output when unpacking & buildingÆvar Arnfjörð Bjarmason, May 13, 2017
  20. 16/29 perf: add a performance comparison test of grep -G, -E and -PÆvar Arnfjörð Bjarmason, May 13, 2017
  21. 18/29 grep: catch a missing enum in switch statementÆvar Arnfjörð Bjarmason, May 13, 2017
  22. Junio C HamanoMay 15, 2017
  23. Ævar Arnfjörð BjarmasonMay 15, 2017
  24. 17/29 perf: add a performance comparison of fixed-string grepÆvar Arnfjörð Bjarmason, May 13, 2017
  25. 20/29 grep: remove redundant `regflags &= ~REG_EXTENDED` assignmentsÆvar Arnfjörð Bjarmason, May 13, 2017
  26. Junio C HamanoMay 15, 2017
  27. Ævar Arnfjörð BjarmasonMay 15, 2017
  28. 19/29 grep: remove redundant regflags assignment under PCREÆvar Arnfjörð Bjarmason, May 13, 2017
  29. 21/29 grep: factor test for \0 in grep patterns into a functionÆvar Arnfjörð Bjarmason, May 13, 2017
  30. Junio C HamanoMay 15, 2017
  31. Ævar Arnfjörð BjarmasonMay 15, 2017
  32. 22/29 grep: change the internal PCRE macro names to be PCRE1Ævar Arnfjörð Bjarmason, May 13, 2017
  33. 23/29 grep: change internal *pcre* variable & function names to be *pcre1*Ævar Arnfjörð Bjarmason, May 13, 2017
  34. 25/29 test-lib: add a PTHREADS prerequisiteÆvar Arnfjörð Bjarmason, May 13, 2017
  35. 26/29 pack-objects & index-pack: add test for --threads warningÆvar Arnfjörð Bjarmason, May 13, 2017
  36. 24/29 grep: move is_fixed() earlier to avoid forward declarationÆvar Arnfjörð Bjarmason, May 13, 2017
  37. 27/29 pack-objects: fix buggy warning about threadsÆvar Arnfjörð Bjarmason, May 13, 2017
  38. Junio C HamanoMay 15, 2017
  39. Ævar Arnfjörð BjarmasonMay 15, 2017
  40. 28/29 grep: given --threads with NO_PTHREADS=YesPlease, warnÆvar Arnfjörð Bjarmason, May 13, 2017
  41. 29/29 grep: assert that threading is enabled when calling grep_{lock,unlock}Ævar Arnfjörð Bjarmason, May 13, 2017
  42. Junio C HamanoMay 15, 2017

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