Re: [RFC PATCH v2] prefix_path: show gitdir when arg is outside repo

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Hi,

Emily Shaffer wrote:

> When developing a script, it can be painful to understand why Git thinks
> something is outside the current repo, if the current repo isn't what
> the user thinks it is. Since this can be tricky to diagnose, especially
> in cases like submodules or nested worktrees, let's give the user a hint
> about which repository is offended about that path.
>
> Signed-off-by: Emily Shaffer <emilyshaffer@xxxxxxxxxx>
> ---
>  pathspec.c | 3 ++-
>  setup.c    | 3 ++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/pathspec.c b/pathspec.c
> index 128f27fcb7..166d255642 100644
> --- a/pathspec.c
> +++ b/pathspec.c
> @@ -439,7 +439,8 @@ static void init_pathspec_item(struct pathspec_item *item, unsigned flags,
>  		match = prefix_path_gently(prefix, prefixlen,
>  					   &prefixlen, copyfrom);
>  		if (!match)
> -			die(_("%s: '%s' is outside repository"), elt, copyfrom);
> +			die(_("%s: '%s' is outside repository at '%s'"), elt,
> +			    copyfrom, absolute_path(get_git_work_tree()));

This is producing segfaults when run by magit.  Reproduction recipe:

	cd .git
	git ls-files ..

Expected result:

	fatal: ..: '..' is outside repository

Actual result:

	Segmentation fault

Does this need an extra case to handle when there is no work tree?

Thanks,
Jonathan

>  	}
>  
>  	item->match = match;
> diff --git a/setup.c b/setup.c
> index 12228c0d9c..4ea7a0b081 100644
> --- a/setup.c
> +++ b/setup.c
> @@ -121,7 +121,8 @@ char *prefix_path(const char *prefix, int len, const char *path)
>  {
>  	char *r = prefix_path_gently(prefix, len, NULL, path);
>  	if (!r)
> -		die(_("'%s' is outside repository"), path);
> +		die(_("'%s' is outside repository at '%s'"), path,
> +		    absolute_path(get_git_work_tree()));
>  	return r;
>  }
>  



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