Function parse_next_arg

builtin/update-ref.c:117–149

* Wrapper around parse_arg which skips the next delimiter. */

 * Wrapper around parse_arg which skips the next delimiter.
 */
static char *parse_next_arg(const char **next)
{
	struct strbuf arg = STRBUF_INIT;

	if (line_termination) {
		/* Without -z, consume SP and use next argument */
		if (!**next || **next == line_termination)
			return NULL;
		if (**next != ' ')
			die("expected SP but got: %s", *next);
	} else {
		/* With -z, read the next NUL-terminated line */
		if (**next)
			return NULL;
	}
	/* Skip the delimiter */
	(*next)++;

	if (line_termination) {
		/* Without -z, use the next argument */
		*next = parse_arg(*next, &arg);
	} else {
		/* With -z, use everything up to the next NUL */
		strbuf_addstr(&arg, *next);
		*next += arg.len;
	}

	if (arg.len)
		return strbuf_detach(&arg, NULL);

	strbuf_release(&arg);
	return NULL;
}

/*
 * The value being parsed is <old-oid> (as opposed to <new-oid>; the