dired omit mode

[Florian Lindner]

Hello,

I'm using this dired configuration, dired+ installed from melpa

(require 'dired+)
(setq dired-dwim-target t)
(setq dired-recursive-deletes 'always)
(setq delete-by-moving-to-trash t)

(add-hook 'dired-mode-hook
          (lambda ()
            ;; Set dired-x buffer-local variables here.  For example:
            (dired-omit-mode 1)
            ))

I want to have dot-files (.*) omitted:

dired-omit-files is a variable defined in `dired-x.el'.
Its value is "^\\.?#\\|^\\.$\\|^\\.\\.$"

Isn't the first regular expression for matching dot-files?

Why are they still displayed when omit-mode ist active?

Another minor question: I've not loaded dired-x. Was it pulled into from 
dired+ ?

Thanks,

Florian