Re: confused git diff -G

From: Alexei Podtelezhnikov <apodtele@gmail.com>
Date: Aug 25, 2023, 00:53 UTC
Message-ID: <CAJU=AjU6cggm+P3d_Ke4uyks79j7uYipbp0xPq7jJ+nCgNSUZg@mail.gmail.com>
In-Reply-To: <ZOfgKQfqvef9FXZ6@nand.local>

On Thu, Aug 24, 2023 at 6:56 PM Taylor Blau <me@ttaylorr.com> wrote:

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>
> On Thu, Aug 24, 2023 at 06:08:18PM -0400, Alexei Podtelezhnikov wrote:
> > I find this sections of the docs confusing:
> >
> > git diff -G (https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/diff-options.txt#n656)
> >
> >  I do not follow why the example talks about `git log -G` and commits.
> > I see that thai file is included in git-log .txt but I do not
> > understand how to use git  diff -G.
>
> I agree that it can be somewhat confusing :-).

[skip to the practical example]

Show 12 quoted lines

> given to `-G`, like so:
>
>     $ git -C repo diff --stat HEAD^
>      a | 1 +
>      b | 1 +
>      2 files changed, 2 insertions(+)
>     $ git -C repo diff --stat HEAD^ -G a
>      a | 1 +
>      1 file changed, 1 insertion(+)
>     $ git -C repo diff --stat HEAD^ -G b
>      b | 1 +
>      1 file changed, 1 insertion(+)

Do you mean that-G is only useful to filter files and not the content of changes? That I can do without -G. Canyou give a better example?