Re: Command-line interface thoughts

On 06/09/2011 08:38 PM, Junio C Hamano wrote:

Michael Haggerty [off-list ref] writes:

quoted

Wouldn't the four trees described above contain information equivalent
to the contents of the index?

In the same sense that you can re-create the state in the index by running
the merge again between HEAD and MERGE_HEAD, yes, they probably do, but is
that a useful question to ask?

The questions is obviously not useful if the only answer is the one that
you give.

But it seems to me that the four pseudo-trees NEXT, OURS, THEIRS, and
BASE are a complete and self-consistent alternative representation of
the information contained in the index.  If this is true, then I claim
that this representation would be much easier to understand and remember
than the index stages (with its highly mnemonic names 0, 1, 2, and 3!)
and the irregular myriad of commands and options currently needed to
access it.

I think this mega-thread served its purpose. It started to explore "will
it make it easier to understand and explain if we use these tokens to name
trees that do not exist in reality?" which is a worthy thing to do.  The
conclusion appears to be "well we do not even know what exactly these
tokens mean in certain situations."

Why do you reach that conclusion?  Are you claiming that the proposed
definitions of the four pseudo-trees upthread are incorrect or
insufficiently defined?

We are about to introduce git at my company, and this is one of the
points that makes me cringe when I think of explaining it to developers
(let alone non-developers).  Even here on the git mailing list, where
most people are numbed to the git UI, there has been a lot of confusion
about how to get needed information from the index.  And I truly believe
that the commands currently needed to access the information in the
index are so nonuniform that half of the participants in this discussion
will have to look them up *again* the next time they need them.

Please throw us struggling users a bone :-)

Michael

-- 
Michael Haggerty
mhagger@alum.mit.edu
http://softwareswirl.blogspot.com/