+cc Duy who knows about worktree,
+cc Eric Wong, who knows about git-svn

On Wed, Oct 12, 2016 at 7:45 AM, Mathieu Arnold <m...@freebsd.org> wrote:
> Hi,
> I'm a FreeBSD ports developer, and while our main repository is in
> Subversion, some of us use git-svn a lot for development.
> I discovered git worktree earlier this week, and I found it a great
> asset to be able to have more than one branch of my worktree accessible
> at the same time...
> Anyway, back to my problem, the way git-svn works, is that it looks for
> a directory named "svn" in its gitdir and if it is not present, decide
> the repository is using git-svn version 1 (whatever that is) and goes to
> parse all the revisions to recreate the svn directory.
> So I can only use git svn commands in my main worktree, the one with the
> real gitdir.
> To fix that, all I had to do is to add a symlink named svn in each
> worktree's gitdir and pointing to ../../svn.

For some definition of fix. ;)
Sure it fixes your local setup now, but would we want to use that as well here?
My gut reaction:

* not all platforms know symlinks
* IIRC there is some worktree magic that tells you the "main" dir,
  so if that was used in git-svn instead it should "just work".

> I think all that needs to happen is that when adding a new worktree, if
> the main git directory has a "svn" directory, add a symlink to it in the
> worktree's gitdir.
> --
> Mathieu Arnold

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