From: Joe Perches <joe@perches.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: Stefan Beller <sbeller@google.com>, git <git@vger.kernel.org>
Subject: Re: grep vs git grep performance?
Date: Fri, 27 Oct 2017 16:22:22 -0700 [thread overview]
Message-ID: <1509146542.1914.19.camel@perches.com> (raw)
In-Reply-To: <877evgxmu7.fsf@evledraar.booking.com>
On Sat, 2017-10-28 at 00:11 +0200, Ævar Arnfjörð Bjarmason wrote:
> On Fri, Oct 27 2017, Joe Perches jotted:
[]
> > git grep performance has already been
> > quite successfully improved.
>
> ...and I have WIP patches to use the PCRE engine for patterns without -P
> which I intend to start sending soon after the next release.
One addition that would be quite nice would be
an option to have regex matches span input lines.
grep v2.54 was the last grep version that allowed
this and I keep it around just for that.
ie:
$ cat hello.txt
Hello
World
$ grep -P "Hello\s*World" hello.txt
$ grep-2.5.4 -P "Hello\s*World" hello.txt
Hello
World
next prev parent reply other threads:[~2017-10-27 23:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-26 15:02 grep vs git grep performance? Joe Perches
2017-10-26 15:11 ` Han-Wen Nienhuys
2017-10-26 15:55 ` Joe Perches
2017-10-26 16:13 ` SZEDER Gábor
2017-10-26 16:20 ` Joe Perches
2017-10-26 16:58 ` Stefan Beller
2017-10-26 17:41 ` Joe Perches
2017-10-26 17:45 ` Stefan Beller
2017-10-27 17:22 ` Joe Perches
2017-10-27 22:11 ` Ævar Arnfjörð Bjarmason
2017-10-27 23:22 ` Joe Perches [this message]
2017-10-28 7:45 ` Ævar Arnfjörð Bjarmason
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