Re: [PATCH 0/7] grep.c: teach --column to 'git-grep(1)'

> On Tue, Jun 19, 2018 at 07:33:39PM +0200, René Scharfe wrote:
>> Am 19.06.2018 um 18:35 schrieb Jeff King:
>>> On Mon, Jun 18, 2018 at 06:43:01PM -0500, Taylor Blau wrote:
>> We could add an optimizer pass to reduce the number of regular
>> expressions in certain cases if that is really too slow.  E.g. this:
>>
>> 	$ git grep -e b -e a
>>
>> ... is equivalent to:
>>
>> 	$ git grep -e '\(b\)\|\(a\)'
>>
>> In that example the optimizer should use a single kwset instead of a
>> regex, but you get the idea, namely to leave the short-circuiting to the
>> regex engine or kwset, which probably do a good job of it.
> 
> I think that--while this pushes that decision to the appropriate level
> of indirection--that it is out of scope for this series, and that the
> above patch should do a sufficient job at not surprising users.