Subject: Minimum git commit abbrev length (Was Re: -tip: origin tree build failure (was: [GIT PULL] ext4 update) for 2.6.37)

From: Ted Ts'o <[email-masked]>
Date: Thu, 28 Oct 2010 13:27:25 -0400

On Thu, Oct 28, 2010 at 07:17:01PM +0200, Ingo Molnar wrote:
> > Linus Torvalds <[email-masked]> wrote:
> > Yes. Except for the kernel the default git commit abbreviation is
> > borderline too short. Seven hex-chars can easily alias with a few
> > more pulls from me: git will not give aliases at the time it gives
> > a shorthand, but a month or two later the abbreviated commit may
> > no longer be unique.
> > 
> > So I suggest using --abbrev=12 or similar.
> 
> ok. A helper script i use does this:
> 
>    git log --pretty=format:"%h: %s" $@
> 
> I have added --abbrev=12. Might make sense to lengthen the %h
> default in upstream Git as well?

Maybe the right thing to do is add a git config option which allows
for a configurable minimum git commit abbreviation length?

      		   	       	      - Ted