If HARD is non-nil, the file is opened in another window.
Otherwise, the ztree window is used to find the file."
(when (and (stringp node) (file-readable-p node))
If HARD is non-nil, the file is opened in another window.
Otherwise, the ztree window is used to find the file."
(when (and (stringp node) (file-readable-p node))