From: Jonathan Nieder <jrnieder@gmail.com>
Date: Mon, 04 Oct 2010 05:11:48 GMT
Subject: Re: RFC: checkout/temporary branch switch restoring modification times
Message-ID: <20101004051148.GG24884@burratino>
In-Reply-To: <4CA95B18.5090008@cockos.com>

Hi,

Justin Frankel wrote:

> git cop master
> ; build
> git cop some-branch-that-affects-lots-of-files
> ; edit some things, commit
> git cop master
> ; build (fast, nothing changed)

Interesting.  I guess the intended use is that you only ever build
on the master branch?

Have you ever tried the contrib/workdir/git-new-workdir script?
I find it fits the use case well for me:

 git clone $repo
 cd repo
 make
 # oh, shoot! I need to try something out real quick.
 cd ..
 git new-workdir repo repo2 origin/master
 cd repo2
 git am patch-to-test
 make
 # okay, back to what I was doing...
 cd ../repo

Maybe it could be helpful for you, too?

Limitations:

 - requires a file system with support for symbolic links
   (I think Pierre Habouzit and Junio discussed changing
   that);

 - workdirs share refs.  If you update master in one
   workdir and another workdir also has master checked
   out, the new changes will appear as staged changes.

 - workdirs do not share HEAD.  "git gc" from one
   workdir can completely trash another if it has a
   detached HEAD pointing to a commit that is not part
   of any local or remote branch.