From: Shawn O. Pearce <spearce@spearce.org>
Date: Sun, 24 Feb 2008 10:32:23 GMT
Subject: Re: [PATCH 5/6] Teach git-describe --exact-match to avoid expensive tag searches
Message-ID: <20080224103223.GI8410@spearce.org>
In-Reply-To: <m3skzibqjo.fsf@localhost.localdomain>

Jakub Narebski <jnareb@gmail.com> wrote:
> "Shawn O. Pearce" <spearce@spearce.org> writes:
> 
> >  A common idiom is to run git-describe twice:
> > 
> >   if test $(git describe $commit) = $(git describe --abbrev=0 $commit)
> >   ...
> 
> Wouldn't it be easier to use?
> 
>     if test $(git rev-parse $(git describe --abbrev=0 $commit)^0) = $commit
> 
> But this is also one unnecessary, although not as costly, call to git
> command.

Yea, that's the other way I've done this in a script before.  But
its obtuse and non-obvious.  --exact-match is a little easier to
figure out.  :-)

-- 
Shawn.