From 18547aacf5ced88bf83d85b03b2b7b3fc6aa3f6c Mon Sep 17 00:00:00 2001 From: Nguyễn Thái Ngọc Duy Date: Sat, 25 Jun 2016 07:22:35 +0200 Subject: grep/pcre: support utf-8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Helped-by: Plamen Totev Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- grep.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'grep.c') diff --git a/grep.c b/grep.c index af920c4542..0e6511fe23 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); -- cgit v1.3