On Fri, Dec 06, 2013 at 03:25:56PM -0800, Jonathan Nieder wrote:

> >   commit=$(git rev-parse HEAD)
> >
> > I'm tempted to say that people who did that are stupid and wrong (and
> > ugly, too). They should probably be using "--verify" in this case. But
> > it has been that way for a long time, and there are two instances in our
> > test scripts that are broken by the patch.
> 
> Wouldn't the same thing happen for $(git rev-parse HEAD^..HEAD) when
> there is a 'HEAD^..HEAD' file, too?  --verify doesn't support that.

True, but they can use "rev-parse HEAD^..HEAD --", which is probably a
better alternative to --verify.

> I think it's a nice idea to provide this functionality for people who
> need it, which would mean protected by an option (--check-ambiguity or
> something).  I don't think it's a good change to do it
> unconditionally.

I don't think it's worth making it conditional. Literally nobody has
asked for it. I was mostly trying to harmonize "rev-parse" and the rest
of the revision parser. If that's not worth doing, I'd just as soon drop
it (and people using "--" properly already get the right behavior).

-Peff
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