Re: [PATCH/RFC 0/4] grep: support to match by line number

[Junio C Hamano <gitster@pobox.com>]

Bert Wesarg <bert.wesarg@googlemail.com> writes:

>>  - Are there existing non-git "grep" implementations that do this?
>
> I didn't know of any, until Jakub mentioned the ack tool. And I didn't
> look for one. I will answer you 'yes'-questions only in context of my
> proposal.

Thanks, but these questions are simple sanity checks done by contrasting
your design with _existing practices_, if any.  It is not useful to answer
what you did here, only to contrast your design with itself.

Also we can read them from your implementation ;-).

>>   - perhaps people use something like "sed -n -e 25,30p file" and be
>>     happy?
>
> How would you combine this with git grep HEAD or with multiple files?

Now how did you get the compiler error messages from your example from the
files in HEAD commit without checking them out?

Besides, that question is still part of figuring out prior art done in the
git-unaware grep, so it is irrelevant that sed or other people's grep
cannot peek into HEAD.