From: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>,
plamen.totev@abv.bg, l.s.r@web.de,
"Eric Sunshine" <sunshine@sunshineco.com>,
tboegi@web.de, "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Subject: [PATCH v4 04/10] grep/icase: avoid kwsset on literal non-ascii strings
Date: Fri, 21 Aug 2015 19:47:14 +0700 [thread overview]
Message-ID: <1440161240-28554-5-git-send-email-pclouds@gmail.com> (raw)
In-Reply-To: <1440161240-28554-1-git-send-email-pclouds@gmail.com>
When we detect the pattern is just a literal string, we avoid heavy
regex engine and use fast substring search implemented in kwsset.c.
But kws uses git-ctype which is locale-independent so it does not know
how to fold case properly outside ascii range. Let regcomp or pcre
take care of this case instead. Slower, but accurate.
Helped-by: René Scharfe <l.s.r@web.de>
Noticed-by: Plamen Totev <plamen.totev@abv.bg>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
grep.c | 7 ++++++-
t/t7812-grep-icase-non-ascii.sh (new +x) | 23 +++++++++++++++++++++++
2 files changed, 29 insertions(+), 1 deletion(-)
create mode 100755 t/t7812-grep-icase-non-ascii.sh
diff --git a/grep.c b/grep.c
index bd32f66..d795b0e 100644
--- a/grep.c
+++ b/grep.c
@@ -4,6 +4,7 @@
#include "xdiff-interface.h"
#include "diff.h"
#include "diffcore.h"
+#include "commit.h"
static int grep_source_load(struct grep_source *gs);
static int grep_source_is_binary(struct grep_source *gs);
@@ -398,12 +399,16 @@ static int is_fixed(const char *s, size_t len)
static void compile_regexp(struct grep_pat *p, struct grep_opt *opt)
{
+ int icase_non_ascii;
int err;
p->word_regexp = opt->word_regexp;
p->ignore_case = opt->ignore_case;
+ icase_non_ascii =
+ (opt->regflags & REG_ICASE || p->ignore_case) &&
+ has_non_ascii(p->pattern);
- if (is_fixed(p->pattern, p->patternlen))
+ if (!icase_non_ascii && is_fixed(p->pattern, p->patternlen))
p->fixed = 1;
else if (opt->fixed) {
p->fixed = 1;
diff --git a/t/t7812-grep-icase-non-ascii.sh b/t/t7812-grep-icase-non-ascii.sh
new file mode 100755
index 0000000..6eff490
--- /dev/null
+++ b/t/t7812-grep-icase-non-ascii.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+test_description='grep icase on non-English locales'
+
+. ./lib-gettext.sh
+
+test_expect_success GETTEXT_LOCALE 'setup' '
+ printf "TILRAUN: Halló Heimur!" >file &&
+ git add file &&
+ LC_ALL="$is_IS_locale" &&
+ export LC_ALL
+'
+
+test_have_prereq GETTEXT_LOCALE &&
+test-regex "HALLÓ" "Halló" ICASE &&
+test_set_prereq REGEX_LOCALE
+
+test_expect_success REGEX_LOCALE 'grep literal string, no -F' '
+ git grep -i "TILRAUN: Halló Heimur!" &&
+ git grep -i "TILRAUN: HALLÓ HEIMUR!"
+'
+
+test_done
--
2.3.0.rc1.137.g477eb31
next prev parent reply other threads:[~2015-08-21 12:58 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-06 11:28 Git grep does not support multi-byte characters (like UTF-8) Plamen Totev
2015-07-06 12:23 ` Duy Nguyen
2015-07-07 8:58 ` Plamen Totev
2015-07-07 12:22 ` Duy Nguyen
2015-07-07 16:07 ` Junio C Hamano
2015-07-07 18:08 ` Plamen Totev
2015-07-08 2:19 ` Duy Nguyen
2015-07-08 4:52 ` Junio C Hamano
2015-07-06 12:42 ` [PATCH] grep: use regcomp() for icase search with non-ascii patterns Nguyễn Thái Ngọc Duy
2015-07-06 20:10 ` René Scharfe
2015-07-06 23:02 ` Duy Nguyen
2015-07-07 14:25 ` Plamen Totev
2015-07-08 10:38 ` [PATCH v2 0/9] icase match on non-ascii Nguyễn Thái Ngọc Duy
2015-07-08 10:38 ` [PATCH v2 1/9] grep: allow -F -i combination Nguyễn Thái Ngọc Duy
2015-07-08 10:38 ` [PATCH v2 2/9] grep: break down an "if" stmt in preparation for next changes Nguyễn Thái Ngọc Duy
2015-07-08 10:38 ` [PATCH v2 3/9] grep/icase: avoid kwsset on literal non-ascii strings Nguyễn Thái Ngọc Duy
2015-07-08 10:38 ` [PATCH v2 4/9] grep/icase: avoid kwsset when -F is specified Nguyễn Thái Ngọc Duy
2015-07-08 10:38 ` [PATCH v2 5/9] grep/pcre: prepare locale-dependent tables for icase matching Nguyễn Thái Ngọc Duy
2015-07-08 11:00 ` Duy Nguyen
2015-07-08 10:38 ` [PATCH v2 6/9] gettext: add is_utf8_locale() Nguyễn Thái Ngọc Duy
2015-07-08 10:38 ` [PATCH v2 7/9] grep/pcre: support utf-8 Nguyễn Thái Ngọc Duy
2015-07-11 8:07 ` Plamen Totev
2015-07-08 10:38 ` [PATCH v2 8/9] diffcore-pickaxe: "share" regex error handling code Nguyễn Thái Ngọc Duy
2015-07-08 10:38 ` [PATCH v2 9/9] diffcore-pickaxe: support case insensitive match on non-ascii Nguyễn Thái Ngọc Duy
2015-07-09 22:55 ` Eric Sunshine
2015-07-08 11:32 ` [PATCH v2 0/9] icase " Torsten Bögershausen
2015-07-08 12:13 ` Duy Nguyen
2015-07-08 15:36 ` Junio C Hamano
2015-07-08 23:28 ` Duy Nguyen
2015-07-14 13:24 ` [PATCH v3 " Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 1/9] grep: allow -F -i combination Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 2/9] grep: break down an "if" stmt in preparation for next changes Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 3/9] grep/icase: avoid kwsset on literal non-ascii strings Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 4/9] grep/icase: avoid kwsset when -F is specified Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 5/9] grep/pcre: prepare locale-dependent tables for icase matching Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 6/9] gettext: add is_utf8_locale() Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 7/9] grep/pcre: support utf-8 Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 8/9] diffcore-pickaxe: "share" regex error handling code Nguyễn Thái Ngọc Duy
2015-07-14 13:24 ` [PATCH v3 9/9] diffcore-pickaxe: support case insensitive match on non-ascii Nguyễn Thái Ngọc Duy
2015-07-14 16:42 ` [PATCH v3 0/9] icase " Torsten Bögershausen
2015-07-15 9:39 ` Duy Nguyen
2015-07-15 19:51 ` Torsten Bögershausen
2015-08-21 12:47 ` [PATCH v4 00/10] " Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` [PATCH v4 01/10] grep: allow -F -i combination Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` [PATCH v4 02/10] grep: break down an "if" stmt in preparation for next changes Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` [PATCH v4 03/10] test-regex: expose full regcomp() to the command line Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` Nguyễn Thái Ngọc Duy [this message]
2015-08-21 12:47 ` [PATCH v4 05/10] grep/icase: avoid kwsset when -F is specified Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` [PATCH v4 06/10] grep/pcre: prepare locale-dependent tables for icase matching Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` [PATCH v4 07/10] gettext: add is_utf8_locale() Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` [PATCH v4 08/10] grep/pcre: support utf-8 Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` [PATCH v4 09/10] diffcore-pickaxe: "share" regex error handling code Nguyễn Thái Ngọc Duy
2015-08-21 12:47 ` [PATCH v4 10/10] diffcore-pickaxe: support case insensitive match on non-ascii Nguyễn Thái Ngọc Duy
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