Re: [PATCH 1/1] stash apply: report status correctly even in a worktree's subdirectory

[Johannes Schindelin <Johannes.Schindelin@gmx.de>]

Hi Junio,

On Fri, 4 Oct 2019, Junio C Hamano wrote:

> "Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
> writes:
>
> > diff --git a/builtin/stash.c b/builtin/stash.c
> > index b5a301f24d..a1e2e7ae7e 100644
> > --- a/builtin/stash.c
> > +++ b/builtin/stash.c
> > @@ -497,6 +497,8 @@ static int do_apply_stash(const char *prefix, struct stash_info *info,
> >  		 */
> >  		cp.git_cmd = 1;
> >  		cp.dir = prefix;
> > +		argv_array_pushf(&cp.env_array, GIT_WORK_TREE_ENVIRONMENT"=%s",
> > +				 absolute_path(get_git_work_tree()));
> >  		argv_array_push(&cp.args, "status");
> >  		run_command(&cp);
> >  	}
>
> Nicely spotted.  Exporting GIT_WORK_TREE alone without GIT_DIR feels
> a bit disturbing, at least to me, though.

You're absolutely right! Of course, the problem this patch fixes is
_because_ `GIT_DIR` is defined, but I should make sure that I don't
introduce the reverse problem ;-)

> I wondered if this misbehaves when the end user has GIT_WORK_TREE
> environment exported, but in such a case, get_git_work_tree() would
> return that directory, and by re-exporting it to the child process,
> we would honor the end user's intention, so all is good, I think.

Yes, that'd my understanding, too. It won't hurt to re-define that
variable, but it hurts not to define it at all.

Ciao,
Dscho

>
> Thanks.
>
> > diff --git a/t/t3908-stash-in-worktree.sh b/t/t3908-stash-in-worktree.sh
> > new file mode 100755
> > index 0000000000..2b2b366ef9
> > --- /dev/null
> > +++ b/t/t3908-stash-in-worktree.sh
> > @@ -0,0 +1,27 @@
> > +#!/bin/sh
> > +#
> > +# Copyright (c) 2019 Johannes E Schindelin
> > +#
> > +
> > +test_description='Test git stash in a worktree'
> > +
> > +. ./test-lib.sh
> > +
> > +test_expect_success 'setup' '
> > +	test_commit initial &&
> > +	git worktree add wt &&
> > +	test_commit -C wt in-worktree
> > +'
> > +
> > +test_expect_success 'apply in subdirectory' '
> > +	mkdir wt/subdir &&
> > +	(
> > +		cd wt/subdir &&
> > +		echo modified >../initial.t &&
> > +		git stash &&
> > +		git stash apply >out
> > +	) &&
> > +	grep "\.\.\/initial\.t" wt/subdir/out
> > +'
> > +
> > +test_done
>