From: Junio C Hamano <gitster@pobox.com>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Carlo Arenas" <carenas@gmail.com>,
git@vger.kernel.org
Subject: Re: [PATCH] grep: skip UTF8 checks explicitally
Date: Thu, 25 Jul 2019 06:02:54 -0700 [thread overview]
Message-ID: <xmqqlfwmqnb5.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <nycvar.QRO.7.76.6.1907251143430.21907@tvgsbejvaqbjf.bet> (Johannes Schindelin's message of "Thu, 25 Jul 2019 11:48:16 +0200 (CEST)")
Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:
>> OK, in short, barfing and stopping is a problem, but that flag is
>> not the right knob to tweak. And the right knob ...
>>
>> > 1) We're oversupplying PCRE2_UTF now, and one such case is what's being
>> > reported here. I.e. there's no reason I can think of for why a
>> > fixed-string pattern should need PCRE2_UTF set when not combined
>> > with --ignore-case. We can just not do that, but maybe I'm missing
>> > something there.
>> >
>> > 2) We can do "try utf8, and fallback". A more advanced version of this
>> > is what the new PCRE2_MATCH_INVALID_UTF flag (mentioned upthread)
>> > does. I was thinking something closer to just carrying two compiled
>> > patterns, and falling back on the ~PCRE2_UTF one if we get a
>> > PCRE2_ERROR_UTF8_* error.
>>
>> ... lies somewhere along that line. I think that is very sensible.
>
> I am glad that everybody agrees with my original comment on ab/no-kwset
> where I suggested that we should use our knowledge of the encoding of
> the haystack and convert it to UTF-8 if we detect that the pattern is
> UTF-8 encoded,...
Please do not count me among "everybody", then. I did not think
that Ævar meant to iconv the haystack when I wrote the message you
are responding to, but if that was what he meant, I would not have
said "very sensible".
next prev parent reply other threads:[~2019-07-25 13:03 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-21 18:31 [PATCH] grep: skip UTF8 checks explicitally Carlo Marcelo Arenas Belón
2019-07-21 18:34 ` Eric Sunshine
2019-07-22 11:55 ` Johannes Schindelin
2019-07-22 14:43 ` [PATCH] grep: skip UTF8 checks explicitly Carlo Marcelo Arenas Belón
2019-07-24 2:10 ` Junio C Hamano
2019-07-24 10:50 ` Johannes Schindelin
2019-07-24 16:08 ` Junio C Hamano
2019-08-28 14:54 ` [PATCH v2] " Carlo Marcelo Arenas Belón
2019-08-28 16:57 ` Carlo Arenas
2019-09-09 15:07 ` Carlo Arenas
2019-09-09 18:49 ` Junio C Hamano
2019-07-22 19:42 ` [PATCH] grep: skip UTF8 checks explicitally Ævar Arnfjörð Bjarmason
2019-07-23 3:50 ` Carlo Arenas
2019-07-23 12:46 ` Johannes Schindelin
2019-07-24 1:47 ` Carlo Arenas
2019-07-24 10:47 ` Johannes Schindelin
2019-07-24 18:22 ` Ævar Arnfjörð Bjarmason
2019-07-24 21:04 ` Junio C Hamano
2019-07-25 9:48 ` Johannes Schindelin
2019-07-25 13:02 ` Junio C Hamano [this message]
2019-07-25 18:22 ` Johannes Schindelin
2019-07-26 15:15 ` Ævar Arnfjörð Bjarmason
2019-07-26 15:53 ` Carlo Arenas
2019-07-26 20:05 ` Ævar Arnfjörð Bjarmason
2019-07-26 16:19 ` Junio C Hamano
2019-07-26 19:40 ` Ævar Arnfjörð Bjarmason
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