Re: index-pack outside of repository?

> I am tempted to suggest an intermediate step that comes before
> b1ef400eec ("setup_git_env: avoid blind fall-back to ".git"",
> 2016-10-20), which is the attached, and publish that as part of an
> official release.  That way, we'll see what is broken without
> hurting people too much (unless they or their scripts care about
> extra message given to the standard error stream).  I suspect that
> released Git has a slightly larger user base than what is cooked on
> 'next'.
> 
>  environment.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/environment.c b/environment.c
> index 0935ec696e..88f857331e 100644
> --- a/environment.c
> +++ b/environment.c
> @@ -167,8 +167,11 @@ static void setup_git_env(void)
>  	const char *replace_ref_base;
>  
>  	git_dir = getenv(GIT_DIR_ENVIRONMENT);
> -	if (!git_dir)
> +	if (!git_dir) {
> +		if (!startup_info->have_repository)
> +			warning("BUG: please report this at git@vger.kernel.org");
>  		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
> +	}