Re: [PATCH 4/4] parse-options: simplify parse_options_dup()

René Scharfe [off-list ref] writes:

Simplify parse_options_dup() by making it a trivial wrapper of
parse_options_concat() by making use of the facts that the latter
duplicates its input as well and that appending an empty set is a no-op.
...
+	struct option no_options[] = { OPT_END() };
+
+	return parse_options_concat(o, no_options);

Can't say if this is tricky or cute, but I like it ;-)

Will queue all four.  Thanks.