Re: [long] worktree setup cases

[Enrico Weigelt <weigelt@metux.de>]

* Junio C Hamano <gitster@pobox.com> wrote:

> If you set GIT_DIR, we do no discovery, so git will work only from the
> root level of the working tree (or bare repository operation) if you do
> not tell us where the working tree is.

Well, we could look at config whether it's an non-bare repo and then
lookup worktree via core.worktree (which would default to "../").


BTW: the whole discovery process IMHO should start w/ looking for 
the gitdir. Could be done this way:

a) explicitly given (via GIT_DIR or --git-dir), take this one.
b) else: recursively scan for a valid .git dir from cwd upstairs to /

Once we've found gitdir, we can look for the worktree. Again:

a) explicitly given, then take it
b) bare repo: dont have any, bail out
c) non-bare repo: look up via core.worktree (w/ default to $GIT_DIR/../)
 
> Shouldn't all of these 16 be the same, if the repository is bare?  What is
> your definition of bareness?  core.bare?  In any case we should say "you
> are using a bare repository, there is no working tree" and cwd shouldn't
> change in these cases.  They are all bare and there is no working tree.

ACK. In a bare repo, the worktree lookup will fail per definition, so
worktree operations can only run with having it explicitly given.


cu
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