command to show diff of a commit

command to show diff of a commit

[Robert Watson]

Hi,

I am wondering what is the best way to show the change introduced by a
commit. In the other words, is there a better way to do this:

git-diff b163512d4eb36ee946908b682c7863658c5a8db4^
b163512d4eb36ee946908b682c7863658c5a8db4

Thanks.
Robertoo

Re: command to show diff of a commit

[Petr Baudis]

Dear diary, on Thu, Sep 22, 2005 at 11:58:32AM CEST, I got a letter
where Robert Watson <robert.oo.watson@gmail.com> told me that...
> Hi,

Hi,

> I am wondering what is the best way to show the change introduced by a
> commit. In the other words, is there a better way to do this:
> 
> git-diff b163512d4eb36ee946908b682c7863658c5a8db4^
> b163512d4eb36ee946908b682c7863658c5a8db4

with Cogito, you would say

	cg-diff -p -r b163512d4eb36ee946908b682c7863658c5a8db4

to see the diff against its parent. (You should still choose the parent
manually in case of merge commits.)

-- 
				Petr "Pasky" Baudis
Stuff: http://pasky.or.cz/
VI has two modes: the one in which it beeps and the one in which
it doesn't.

Re: command to show diff of a commit

[Robert Watson]

On 9/22/05, Petr Baudis <pasky@suse.cz> wrote:
> Dear diary, on Thu, Sep 22, 2005 at 11:58:32AM CEST, I got a letter
> where Robert Watson <robert.oo.watson@gmail.com> told me that...
> > Hi,
>
> Hi,
>
> > I am wondering what is the best way to show the change introduced by a
> > commit. In the other words, is there a better way to do this:
> >
> > git-diff b163512d4eb36ee946908b682c7863658c5a8db4^
> > b163512d4eb36ee946908b682c7863658c5a8db4
>
> with Cogito, you would say
>
>         cg-diff -p -r b163512d4eb36ee946908b682c7863658c5a8db4
>
> to see the diff against its parent. (You should still choose the parent
> manually in case of merge commits.)
>

Thanks, it is nice to know that cogito can go it.  But can I achieve
the same with git-core only?

Thanks,
Robertoo

Re: command to show diff of a commit

[Sven Verdoolaege]

On Thu, Sep 22, 2005 at 03:25:01PM +0100, Robert Watson wrote:
> On 9/22/05, Petr Baudis <pasky@suse.cz> wrote:
> > Dear diary, on Thu, Sep 22, 2005 at 11:58:32AM CEST, I got a letter
> > > I am wondering what is the best way to show the change introduced by a
> > > commit. In the other words, is there a better way to do this:
> > >
> > > git-diff b163512d4eb36ee946908b682c7863658c5a8db4^
> > > b163512d4eb36ee946908b682c7863658c5a8db4
> >
> Thanks, it is nice to know that cogito can go it.  But can I achieve
> the same with git-core only?
> 

I suppose this is slightly shorter:

git-whatchanged --max-count=1 -p b163512d4eb36ee946908b682c7863658c5a8db4

skimo

Re: command to show diff of a commit

[Linus Torvalds]

On Thu, 22 Sep 2005, Robert Watson wrote:
> 
> I am wondering what is the best way to show the change introduced by a
> commit. In the other words, is there a better way to do this:
> 
> git-diff b163512d4eb36ee946908b682c7863658c5a8db4^
> b163512d4eb36ee946908b682c7863658c5a8db4

Oh, absolutely.

Do

	git-diff-tree -p --pretty b163512d4eb36ee946908b682c7863658c5a8db4

and you're done.

If you _just_ want the diff (and not the message), skip the "--pretty".

		Linus

Re: command to show diff of a commit

[Robert Watson]

On 9/22/05, Linus Torvalds <torvalds@osdl.org> wrote:
>
>
> On Thu, 22 Sep 2005, Robert Watson wrote:
> >
> > I am wondering what is the best way to show the change introduced by a
> > commit. In the other words, is there a better way to do this:
> >
> > git-diff b163512d4eb36ee946908b682c7863658c5a8db4^
> > b163512d4eb36ee946908b682c7863658c5a8db4
>
> Oh, absolutely.
>
> Do
>
>         git-diff-tree -p --pretty b163512d4eb36ee946908b682c7863658c5a8db4
>
> and you're done.
>
> If you _just_ want the diff (and not the message), skip the "--pretty".
>
>                 Linus
>

Many thanks.  I know there must be a way to do this.

Here is a patch to make the document a bit clearer.

Regards,
Robertoo

diff --git a/Documentation/git-diff-tree.txt b/Documentation/git-diff-tree.txt
--- a/Documentation/git-diff-tree.txt
+++ b/Documentation/git-diff-tree.txt
@@ -9,12 +9,15 @@ git-diff-tree - Compares the content and

 SYNOPSIS
 --------
-'git-diff-tree' [--stdin] [-m] [-s] [-v] [--pretty] [-t] [<common
diff options>] <tree-ish> <tree-ish> [<path>...]
+'git-diff-tree' [--stdin] [-m] [-s] [-v] [--pretty] [-t] [<common
diff options>] <tree-ish> [<tree-ish>] [<path>...]

 DESCRIPTION
 -----------
 Compares the content and mode of the blobs found via two tree objects.

+If there is only one <tree-ish> given, the commit is compared with its parents
+(see --stdin below).
+
 Note that "git-diff-tree" can use the tree encapsulated in a commit object.

 OPTIONS