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[PATCH v2 20/29] grep: remove redundant `regflags &= ~REG_EXTENDED` assignments

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
May 13, 2017, 23:15 UTC
Message-ID
<20170513231509.7834-21-avarab@gmail.com>
In-Reply-To
<20170513231509.7834-1-avarab@gmail.com>

Remove redundant assignments to the "regflags" variable. There are no code paths that have previously set the regflags to anything, and certainly not to `|= REG_EXTENDED`.

This code gave the impression that it had to reset its environment, but it doesn't. This dates back to the initial introduction of git-grep in commit 5010cb5fcc ("built-in "git grep"", 2006-04-30).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 grep.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/grep.c b/grep.c
index 59ae7809f2..bf6c2494fd 100644
--- a/grep.c
+++ b/grep.c
@@ -179,7 +179,6 @@ static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, st
 	case GREP_PATTERN_TYPE_BRE:
 		opt->fixed = 0;
 		opt->pcre = 0;
-		opt->regflags &= ~REG_EXTENDED;
 		break;
 
 	case GREP_PATTERN_TYPE_ERE:
@@ -191,7 +190,6 @@ static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, st
 	case GREP_PATTERN_TYPE_FIXED:
 		opt->fixed = 1;
 		opt->pcre = 0;
-		opt->regflags &= ~REG_EXTENDED;
 		break;
 
 	case GREP_PATTERN_TYPE_PCRE:
@@ -414,10 +412,9 @@ static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt)
 {
 	struct strbuf sb = STRBUF_INIT;
 	int err;
-	int regflags;
+	int regflags = opt->regflags;
 
 	basic_regex_quote_buf(&sb, p->pattern);
-	regflags = opt->regflags & ~REG_EXTENDED;
 	if (opt->ignore_case)
 		regflags |= REG_ICASE;
 	err = regcomp(&p->regexp, sb.buf, regflags);

-- 
2.11.0
Previous: Ævar Arnfjörð BjarmasonNext: Junio C Hamano
Message 25 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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