From: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Subject: [PATCH v2 04/12] grep/icase: avoid kwsset on literal non-ascii strings
Date: Sat, 25 Jun 2016 07:22:30 +0200 [thread overview]
Message-ID: <20160625052238.13615-5-pclouds@gmail.com> (raw)
In-Reply-To: <20160625052238.13615-1-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.
Noticed-by: Plamen Totev <plamen.totev@abv.bg>
Helped-by: René Scharfe <l.s.r@web.de>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.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 f430d7e..451275d 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);
@@ -398,14 +399,18 @@ static int is_fixed(const char *s, size_t len)
static void compile_regexp(struct grep_pat *p, struct grep_opt *opt)
{
+ int icase, ascii_only;
int err;
p->word_regexp = opt->word_regexp;
p->ignore_case = opt->ignore_case;
+ icase = opt->regflags & REG_ICASE || p->ignore_case;
+ ascii_only = !has_non_ascii(p->pattern);
if (opt->fixed)
p->fixed = 1;
- else if (is_fixed(p->pattern, p->patternlen))
+ else if ((!icase || ascii_only) &&
+ is_fixed(p->pattern, p->patternlen))
p->fixed = 1;
else
p->fixed = 0;
diff --git a/t/t7812-grep-icase-non-ascii.sh b/t/t7812-grep-icase-non-ascii.sh
new file mode 100755
index 0000000..b78a774
--- /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' '
+ test_write_lines "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
--
2.8.2.526.g02eed6d
next prev parent reply other threads:[~2016-06-25 5:24 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-23 16:28 [PATCH 00/11] nd/icase updates Nguyễn Thái Ngọc Duy
2016-06-23 16:28 ` [PATCH 01/11] grep: break down an "if" stmt in preparation for next changes Nguyễn Thái Ngọc Duy
2016-06-23 16:28 ` [PATCH 02/11] test-regex: isolate the bug test code Nguyễn Thái Ngọc Duy
2016-06-23 16:28 ` [PATCH 03/11] test-regex: expose full regcomp() to the command line Nguyễn Thái Ngọc Duy
2016-06-23 16:29 ` [PATCH 04/11] grep/icase: avoid kwsset on literal non-ascii strings Nguyễn Thái Ngọc Duy
2016-06-23 20:12 ` Junio C Hamano
2016-06-23 16:29 ` [PATCH 05/11] grep/icase: avoid kwsset when -F is specified Nguyễn Thái Ngọc Duy
2016-06-23 20:25 ` Junio C Hamano
2016-06-23 16:29 ` [PATCH 06/11] grep/pcre: prepare locale-dependent tables for icase matching Nguyễn Thái Ngọc Duy
2016-06-23 16:29 ` [PATCH 07/11] gettext: add is_utf8_locale() Nguyễn Thái Ngọc Duy
2016-06-23 16:29 ` [PATCH 08/11] grep/pcre: support utf-8 Nguyễn Thái Ngọc Duy
2016-06-23 16:29 ` [PATCH 09/11] diffcore-pickaxe: "share" regex error handling code Nguyễn Thái Ngọc Duy
2016-06-23 19:16 ` Jeff King
2016-06-23 16:29 ` [PATCH 10/11] diffcore-pickaxe: support case insensitive match on non-ascii Nguyễn Thái Ngọc Duy
2016-06-23 16:29 ` [PATCH 11/11] grep.c: reuse "icase" variable Nguyễn Thái Ngọc Duy
2016-06-23 20:32 ` [PATCH 00/11] nd/icase updates Junio C Hamano
2016-06-25 5:22 ` [PATCH v2 00/12] " Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 01/12] grep: break down an "if" stmt in preparation for next changes Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 02/12] test-regex: isolate the bug test code Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 03/12] test-regex: expose full regcomp() to the command line Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` Nguyễn Thái Ngọc Duy [this message]
2016-06-25 5:22 ` [PATCH v2 05/12] grep/icase: avoid kwsset when -F is specified Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 06/12] grep: rewrite an if/else condition to avoid duplicate expression Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 07/12] grep/pcre: prepare locale-dependent tables for icase matching Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 08/12] gettext: add is_utf8_locale() Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 09/12] grep/pcre: support utf-8 Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 10/12] diffcore-pickaxe: Add regcomp_or_die() Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 11/12] diffcore-pickaxe: support case insensitive match on non-ascii Nguyễn Thái Ngọc Duy
2016-06-25 5:22 ` [PATCH v2 12/12] grep.c: reuse "icase" variable Nguyễn Thái Ngọc Duy
2016-06-27 14:53 ` [PATCH v2 00/12] nd/icase updates Junio C Hamano
2016-06-27 15:00 ` Junio C Hamano
2016-06-30 15:45 ` Duy Nguyen
2016-07-01 18:18 ` Junio C Hamano
2016-07-01 18:46 ` Duy Nguyen
2016-07-01 18:54 ` Junio C Hamano
2016-07-01 19:11 ` Junio C Hamano
2016-07-01 19:40 ` Junio C Hamano
2016-07-01 20:06 ` Junio C Hamano
2016-07-01 20:07 ` Junio C Hamano
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