f7c766fb9e
1b7a3ea99a
See http://www.zsh.org/mla/workers/2014/msg00501.html for details. At time of writing, some RedHat and CentOS still have 4.3.10 as the most up-to-date zsh in their package managers, so this should allow wd to work on those systems properly.
continuating #1923