From mboxrd@z Thu Jan  1 00:00:00 1970
From: Florian Lindner <mailinglists@xgm.de>
Subject: Default application for org-reveal
Date: Fri, 6 Jan 2017 21:50:01 +0100
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To: emacs-orgmode@gnu.org

Hello,

the Org Attach dispatcher offers a key "f" to open the attachment directory not in Emacs.

(defun org-attach-reveal (&optional if-exists)
  "Show the attachment directory of the current task.
This will attempt to use an external program to show the directory."
  (interactive "P")
  (let ((attach-dir (org-attach-dir (not if-exists))))
    (and attach-dir (org-open-file attach-dir))))

On my two systems this is the same a F, it opens in dired. xdg-open . uses dolphin to open inode/directory. How does Emacs/org determine which
application to use? How can I influence it?

Thanks,
Florian

P.S. Why are file associations such a mess on Linux. Emacs? KDE and Thunderbird all use different applications to open the same file...