du command completion is broken after latest zsh update: it doesn't try to substitude files and directories any more, e.g. typing `du <space> <tab>` prints `-` and tries command line flag completion, while it should do file/directory completion, roughly like `ls <space> <tab>` would do.
Yeah I figured out and I am working on it
A commit references this bug: Author: bapt Date: Mon Jun 15 12:36:14 UTC 2015 New revision: 389703 URL: https://svnweb.freebsd.org/changeset/ports/389703 Log: Fix du(1) completion PR: 200768 Obtained from: ZSH upstream Changes: head/shells/zsh/Makefile head/shells/zsh/files/patch-Completion_Unix_Command___du