Re: git complains packed-refs is not a directory when used with GIT_DIR and GIT_WORK_TREE envvars.

[Jeff King <peff@peff.net>]

On Tue, Mar 27, 2018 at 07:30:24PM +0200, Duy Nguyen wrote:

> On Tue, Mar 27, 2018 at 07:09:36PM +0200, Duy Nguyen wrote:
> > I would rather have something like ref_store_reinit() in the same
> > spirit as the second call of set_git_dir() in setup_work_tree. It is
> > hacky, but it works and keeps changes to minimal (so that it could be
> > easily replaced later).
> 
> So in the name of hacky and dirty things, it would look something like
> this. This passed your test case. The test suite is still running
> (slow laptop) but I don't expect breakages there.

I think this is the right direction. I mentioned in my last reply that
it would be nice for this to be a bit more generic, in case we need to
use it again (and also just to keep the module boundaries sane).

This part confused me at first:

> +void make_main_ref_store_use_absolute_paths(void)
> +{
> +	files_force_absolute_paths(get_main_ref_store());
> +}
> +
> +void make_main_ref_store_use_relative_paths(const char *cwd)
> +{
> +	files_make_relative_paths(get_main_ref_store(), cwd);
> +}

since I thought you were actually turning things into absolute paths.
But your procedure is basically "turn absolute, then after chdir, turn
them back relative".

I think it might be clearer if a single call is given both the old and
new paths. That requires the caller of chdir() storing getcwd() before
it moves, but I don't think that should be a big deal.

-Peff