On Mon, 8 Jul 2013 11:41:09 -0700 (PDT)
Andy From <andyf...@gmail.com> wrote:

> I wonder if there's been any work on providing SHA-1 tab completion
> for any command (e.g. show or diff) ?
> Completion works fine for e.g. branches but it might be a convenience 
> feature to also be able to complete on SHA-1.
> Maybe there would be some performance drawbacks on this and there's
> been some discussion on this already...

A question like this should be directed to the main Git list
(git at vger.kernel.org, see [1]) which is dedicated to discussing of
the Git development.

But really let's just look at the problem: there's no single registry
of object names which would facilitate their quick lookups.  So full
support of SHA-1 completions appears to be infeasible to implement.

On the other hand, the completion function could run
`git for-each-ref ...` and try to complete through the list of returned
SHA-1 names of those references.  That would only include SHA-1 names
of all the branches, tags, notes etc but supposedly that would be okay
for most practical uses.

1. http://vger.kernel.org/vger-lists.html#git

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