Do not put explicit dot in $cdpath, since it causes problems on Cygwin due to an underlying zsh bug.

lib/completion.zsh

@@ -34,7 +34,6 @@ fi
 
 # disable named-directories autocompletion
 zstyle ':completion:*:cd:*' tag-order local-directories directory-stack path-directories
-cdpath=(.)
 
 # Use caching so that commands like apt and dpkg complete are useable
 zstyle ':completion::complete:*' use-cache 1