Re: [PATCH] setup_git_directory: Setup cwd properly if worktree is found

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Hi,

On Mon, 12 Nov 2007, Nguyen Thai Ngoc Duy wrote:

> On Nov 12, 2007 6:57 PM, Johannes Schindelin <Johannes.Schindelin@xxxxxx> wrote:
>
> > But what about setup_git_directory_gently()?  If the working tree is 
> > overridden by the config, this function is still bogus, right?
> 
> Hmm.. thinking a little bit more. I guess you're right because 
> GIT_WORK_TREE takes precedence over core.worktree. Maybe some more bits 
> for check_repository_format_version(). Tough decision because, from the 
> value of inside_work_tree, we don't know if we can safely skip 
> overriding inside_work_tree.

I was thinking about adding check_repository_format_version() and a check 
for inside_work_tree < 0 with obvious handling in two places, probably as 
a function:  first, when we have a gitdirenv but no work_tree_env, and 
second, at the end of _gently() when we found a git dir but only if 
work_tree_env was not set.

> > As far as I see, setup_git_directory_gently() only works correctly 
> > when core.worktree is _not_ set, unless GIT_WORK_TREE is set (which is 
> > supposed to override the config setting).  Note: I treat GIT_WORK_TREE 
> > the same as --work-tree, since at that time they are identical.
> >
> > Maybe the config stuff has to move into _gently()?
> 
> Well, it could be a bit more complicated because you need to know
> GIT_DIR first before reading config. I'd rather not move as _gently()
> is complicated already.

AFAICT it is not a question of complexity, but of correctness.  Wouldn't 
you agree that the prefix _gently() returns is wrong if we don't fix it?

Besides, it might be needed anyway if we are serious about the version 
check.  This check, however, would have to be done _whenever_ we found a 
git directory, not only when work_tree_env is NULL.

But we could break down _gently() quite nicely.  ATM it both handles the 
cases when gitdirenv was set, and when it was unset.  Even if those are 
really two pretty different situations.

Ciao,
Dscho
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