Re: 'commit -a' safety

On Sat, Apr 24, 2010 at 10:28:48AM -0400, Joey Hess wrote:

Jakub Narebski wrote:

quoted

What you cant recover by undoing commit is the state of index before
accidental 'git commit -a' instead of 'git commit'.

Has a reflog equivilant for the index, to allow resetting it to a
previous state, ever been discussed? 

I don't grok its data structure -- could that be done efficiently?

Updating the index creates blobs, so the file states are definitely
already kept. What is missing is trees that could be referred to by a
log.

Mike