Re: [PATCH v13 4/8] bisect: introduce support for --no-checkout option.

Jon Seymour [off-list ref] writes:

If --no-checkout is specified, then the bisection process uses:

	git update-ref --no-deref HEAD <trial>

at each trial instead of:

	git checkout <trial>
...

Ok.

 int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 {
 	int next_all = 0;
+	int no_checkout = 0;
+	char *bisect_mode=NULL;
 	struct option options[] = {
 		OPT_BOOLEAN(0, "next-all", &next_all,
 			    "perform 'git bisect next'"),
+		OPT_STRING(0, "bisect-mode", &bisect_mode, "mode",
+			    "the bisection mode either checkout or update-ref. defaults to checkout."),

I think this is a regression from naming perspective from the previous
round. You would be either the normal (checkout) mode or no-checkout mode,
and honestly, --no-checkout would be understood by anybody while update-ref
would be understood only by Gitz.