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From:   Brian Norris <briannorris@chromium.org>
Date:   Wed, 7 Nov 2018 19:16:21 -0800
Message-ID: <CA+ASDXN40pvbZKvsO3Cb8256AQJ3fyQh5TWdT+GDk_ncq11nMw@mail.gmail.com>
Subject: Re: [PATCH] Revert "scripts/setlocalversion: git: Make -dirty check
 more robust"
To:     Doug Anderson <dianders@chromium.org>
Cc:     sky@genki.is, Guenter Roeck <linux@roeck-us.net>,
        lists@nerdbynature.de, yamada.masahiro@socionext.com,
        Linux Kernel <linux-kernel@vger.kernel.org>
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On Wed, Nov 7, 2018 at 1:18 PM Doug Anderson <dianders@chromium.org> wrote:
> On Wed, Nov 7, 2018 at 1:07 PM Genki Sky <sky@genki.is> wrote:
> > On Wed, 7 Nov 2018 12:55:14 -0800, Guenter Roeck <linux@roeck-us.net> wrote:
> > > Ubuntu 16.04 ships with git version 2.7.4.
> >
> > Okay. I guess --no-optional-locks is a no-go then.
>
> In theory you could wrap it.  If passing git with
> "--no-optional-locks" doesn't work you could fall back to the old
> code?  That would mean only people with newer git would get your new
> feature and everyone else would stick with the pre-existing behavior.

+1, that's what I was going to suggest. Presumably older git would
give non-zero exit status for unknown flags, and we take that as
signal to try to the old way?