On Tue, Apr 30, 2013 at 2:35 AM, Felipe Contreras
[off-list ref] wrote:

So HEAD@{0}~0^0 is too much to type, but we can remove '^0', and we can
remove '~0', and we can remove 'HEAD', but we can't remove '{0}'?

This patch allows 'HEAD@' to be the same as 'HEAD@{0}', and similarly with
'master@'.

So we can type '@' instead of 'HEAD@', or rather 'HEAD'. So now we can
use 'git show @~1', and all that goody goodness.

This patch also allows funny things like @{-1}@ (wanted to try the
cute syntax @{u}@ but too lazy to setup upstream)

$ ./git rev-parse @{-1}
7e6a0cc47da79dd22c0338aee8750fda92ced5d9
$ ./git rev-parse @{-1}@
7e6a0cc47da79dd22c0338aee8750fda92ced5d9
$ ./git rev-parse @{-1}@{0}
@{-1}@{0}
fatal: ambiguous argument '@{-1}@{0}': unknown revision or path not in
the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
--
Duy