From: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>,
"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Subject: [PATCH 08/11] grep/pcre: support utf-8
Date: Thu, 23 Jun 2016 18:29:04 +0200 [thread overview]
Message-ID: <20160623162907.23295-9-pclouds@gmail.com> (raw)
In-Reply-To: <20160623162907.23295-1-pclouds@gmail.com>
In the previous change in this function, we add locale support for
single-byte encodings only. It looks like pcre only supports utf-* as
multibyte encodings, the others are left in the cold (which is
fine).
We need to enable PCRE_UTF8 so pcre can find character boundary
correctly. It's needed for case folding (when --ignore-case is used)
or '*', '+' or similar syntax is used.
The "has_non_ascii()" check is to be on the conservative side. If
there's non-ascii in the pattern, the searched content could still be
in utf-8, but we can treat it just like a byte stream and everything
should work. If we force utf-8 based on locale only and pcre validates
utf-8 and the file content is in non-utf8 encoding, things break.
Noticed-by: Plamen Totev <plamen.totev@abv.bg>
Helped-by: Plamen Totev <plamen.totev@abv.bg>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
grep.c | 2 ++
t/t7812-grep-icase-non-ascii.sh | 15 +++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/grep.c b/grep.c
index 22f4d99..6e99b01 100644
--- a/grep.c
+++ b/grep.c
@@ -329,6 +329,8 @@ static void compile_pcre_regexp(struct grep_pat *p, const struct grep_opt *opt)
p->pcre_tables = pcre_maketables();
options |= PCRE_CASELESS;
}
+ if (is_utf8_locale() && has_non_ascii(p->pattern))
+ options |= PCRE_UTF8;
p->pcre_regexp = pcre_compile(p->pattern, options, &error, &erroffset,
p->pcre_tables);
diff --git a/t/t7812-grep-icase-non-ascii.sh b/t/t7812-grep-icase-non-ascii.sh
index 1929809..08ae4c9 100755
--- a/t/t7812-grep-icase-non-ascii.sh
+++ b/t/t7812-grep-icase-non-ascii.sh
@@ -20,6 +20,21 @@ test_expect_success REGEX_LOCALE 'grep literal string, no -F' '
git grep -i "TILRAUN: HALLÓ HEIMUR!"
'
+test_expect_success GETTEXT_LOCALE,LIBPCRE 'grep pcre utf-8 icase' '
+ git grep --perl-regexp "TILRAUN: H.lló Heimur!" &&
+ git grep --perl-regexp -i "TILRAUN: H.lló Heimur!" &&
+ git grep --perl-regexp -i "TILRAUN: H.LLÓ HEIMUR!"
+'
+
+test_expect_success GETTEXT_LOCALE,LIBPCRE 'grep pcre utf-8 string with "+"' '
+ test_write_lines "TILRAUN: Hallóó Heimur!" >file2 &&
+ git add file2 &&
+ git grep -l --perl-regexp "TILRAUN: H.lló+ Heimur!" >actual &&
+ echo file >expected &&
+ echo file2 >>expected &&
+ test_cmp expected actual
+'
+
test_expect_success REGEX_LOCALE 'grep literal string, with -F' '
git grep --debug -i -F "TILRAUN: Halló Heimur!" 2>&1 >/dev/null |
grep fixed >debug1 &&
--
2.8.2.526.g02eed6d
next prev parent reply other threads:[~2016-06-23 16:29 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 ` Nguyễn Thái Ngọc Duy [this message]
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 ` [PATCH v2 04/12] grep/icase: avoid kwsset on literal non-ascii strings Nguyễn Thái Ngọc Duy
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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