Re: How to use git attributes to configure server-side checks?

[Jeff King <peff@peff.net>]

On Thu, Sep 22, 2011 at 04:58:56PM -0400, Jeff King wrote:

> That makes some sense to me. As Junio pointed out, there is a catch with
> "diff -R". In that case, I would still think you would use the "second"
> commit, even though we're reversing the diff. So:
> 
>   git diff A B
> 
> would not be exactly equivalent to:
> 
>   git diff -R B A
> 
> in that the second would use attributes from "A" instead of "B".

I misread Junio's comment a bit. Re-reading it, this is exactly the
inconsistency he complained about. However, I consider it somewhat of a
feature. We currently have two ways to express the same thing, and you
arrive at one or the other based on the way you are thinking of the
problem. But we can use that to disambiguate between the two cases; one
is about going from A to B, and one is about inverting the operation of
going from B to A. Right now they're equivalent, but they don't have to
be.

If you read the rest of my message, you will see that I think picking
"first" or "second" arbitrarily like this might be barking up the wrong
tree.  But I just wanted to clarify that point.

-Peff