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From: Marc Mientki <mientki@nonet.com>
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Subject: Re: How to call a function on every directory change (in dired)?
Date: Tue, 28 Sep 2010 14:55:03 +0200
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Am 28.09.2010 14:37, schrieb Marc Mientki:
> Maybe is defadvice on dired-find-file a solution??

Yes, I know, I talk to myself. However, this could also be interesting 
to others. So I post my solution:

The advice idea was right! It works:

(defun foo ()
   (message "--> hoho: current directory: %s" (dired-current-directory)))

(defadvice dired-find-file (after foo)
   "Call foo each time on directory entry in dired."
   (foo))

(ad-activate 'dired-find-file)


regards
Marc