Since fb1bb96 (read-tree: deprecate syntax without tree-ish args,
2010-09-10) not passing --empty caused a spurious warning that was
shown to the user.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These are original scripted implementations, kept primarily for their reference value to any aspiring plumbing users who want to learn how pieces can be fit together.