On Wednesday 2007 January 10 09:33, Junio C Hamano wrote: > > If the detached HEAD matches another branch what did we need a detached > > HEAD for in the first place? > > > > Seems that this check will in practice always be true. A detached HEAD > > by definition doesn't match some other branch. > > You are forgetting this: > > git checkout v1.0.0 No I'm not. Linus's suggested check is "git checkout will refuse to switch AWAY from a detached head unless the SHA1 of the detached head exactly matches some other branch." My question is what use is that? In exactly the situation you describe HEAD doesn't match a branch. git checkout v1.0.0 HEAD after that doesn't match any branch so the next "git checkout" will find that HEAD doesn't match any branch and will refuse to switch away. Why? A checkout in this case isn't dangerous at all. Of course I could still be misunderstanding. If Linus meant "refuse to switch AWAY from a detached HEAD unless the hash of the detached head exactly matches some other ref", I would be less confused. Andy -- Dr Andy Parkins, M Eng (hons), MIEE andyparkins@xxxxxxxxx - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html