Re: [PATCH 4/9] read_early_config(): optionally return the worktree's top-level directory

> On 06/08, Johannes Schindelin wrote:
> 
> > Back to the worktree_dir variable.
> > 
> > I think part of the confusion here is that it may be left alone even
> > when there is a worktree. For example, if we are already in the
> > top-level directory. Or if the worktree somehow points to a different
> > directory than the one containing the .git/ directory.
> > 
> > Therefore, I renamed this variable to `cdup_dir` to reflect the fact
> > that it is only touched if Git determines that it is in a subdirectory
> > of the directory containing the .git/ directory.
> 
> Ok, maybe I'm just not following but just from reading the variable name
> I can't really understand what 'cdup_dir' means.