On Mon, Jun 07, 2010 at 08:26:53AM +0200, Johannes Sixt wrote:
> > Is there a reason to use the magic "amend" and "normal" words, if
> > scripts are just going to end up changing them back into HEAD~1 and HEAD
> > anyway?
>
> pre-commit might act differently when a commit is amended, the most likely
> reason I can think of is to always allow to amend. When you have only a
> SHA1, you can get that information only with an additional process.
Actually, I meant to provide the hook with the literal words "HEAD~1"
and "HEAD", not the sha1. So they are effectively magic words, but they
also happen to be useful for directly feeding to git commands.
It also extends naturally to indicating a merge commit ("HEAD" or
"HEAD~1" followed by some other ref). I don't know if that is useful or
not, but it seems like the same realm of information as whether or not
we are amending.
-Peff
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