Re: grep vs git grep performance?

From: Joe Perches <joe@perches.com>
Date: Oct 27, 2017, 23:22 UTC
Message-ID: <1509146542.1914.19.camel@perches.com>
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:

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> > 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