Jeff King <peff@peff.net> writes:

quoted text
> On Tue, Jan 09, 2007 at 03:46:32PM -0800, Linus Torvalds wrote:
>
>> I would suggest a solution:
>> 
>>  - git checkout will refuse to switch AWAY from a detached head unless the 
>>    SHA1 of the detached head exactly matches some other branch.
>
> What about
>
>   git checkout HEAD~20
>
> I agree that checking out tags will be more common, but it feels like we
> are discouraging this usage by presenting spurious warning messages.

Once the user knows what HEAD~20 means, I think it is safe to
assume that the user knows what the branches are.

"git checkout master" will barf and suggests the user possible
common exits; "checkout -f" if there is nothing of value,
"checkout -b <branch>" or if they want to build on the current
state.

And once the user who knows what the branches are sees such, and
especially with the help from $PS1 hack of bash-completion in
contrib/ section, the user will learn to do "checkout -f" after
wandering around for sightseeing on a detached HEAD, and at that
point the annoying error message will not be even seen.


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