Re: ag, **, and the GPL

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On Wed, Nov 19, 2014 at 12:57 AM, David Turner <dturner@xxxxxxxxxxxxxxxx> wrote:
> On Mon, 2014-11-17 at 20:50 -0800, Matthew Kaniaris wrote:
>> The Silver Search (https://github.com/ggreer/the_silver_searcher), is
>> a small, open source, cross platform searching utility written as a
>> replacement for ack.  One of the major benefits of Ag (and a source
>> for much of its speed) is that it obeys .gitignore.  However, Ag
>> currently treats gitignores as regexs which produces incorrect results
>> for e.g. **.  I'd like to add support to ag to obey the .gitignore
>> spec but I'm not keen on implementing yet another fnmatch clone.  Ag
>> is licensed under the Apache License Version 2.0 which to the best of
>> my understanding is incompatible with the GPLv2.  Would you grant me
>> permission to reuse wildmatch.c (and necessary includes) for use in
>> Ag?
>
> I already implemented this without using any git code at
> https://github.com/novalis/the_silver_searcher.  The patch was rejected
> because it slowed down ag slightly (or perhaps because it was overly
> complex).

Interesting. Do you have a direct link to that discussion (I don't
know how to navigate that novalis link). Generally you (or ag) should
avoid fnmatch/wildmatch whenever possible. Hitting those *match()
_will_ slow things down (and git tries hard to avoid it). I had some
optimizations on top of rsync wildmatch to handle "*" case better, but
I don't think it'll make big difference in practice.
-- 
Duy
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