From: Jeff King <peff@peff.net>
Date: Wed, 20 Jul 2016 16:06:36 GMT
Subject: Re: [PATCH v1 4/6] Expanded branch header for Porcelain Status V2
Message-ID: <20160720160635.GC24902@sigill.intra.peff.net>
In-Reply-To: <1468966258-11191-5-git-send-email-jeffhost@microsoft.com>

On Tue, Jul 19, 2016 at 06:10:56PM -0400, Jeff Hostetler wrote:

> +	} else {
> +		/*
> +		 * TODO All of various print routines allow for s->branch to be null.
> +		 * TODO When can this happen and what should we report here?
> +		 */
> +		fprintf(s->fp, " %s", "(unknown)");
> +	}

IIRC, it happens when HEAD points to a broken ref. So something like:

  git init
  echo broken >.git/refs/heads/master

would cause resolving HEAD to return NULL.

-Peff