The dir /usr/share/zsh is created without reason or permission
I never installed zsh but I have the dir /usr/share/zsh on my pc.
I think some package added that without asking.
I feel this isn’t good. I don’t want to have anything to do with zsh and
any thing like this should not be present from other packages IMO.
(from redmine: issue id 6848, created on 2017-02-12)