From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marco Wahl <marcowahlsoft@gmail.com>
Subject: Re: Default application for org-reveal
Date: Sat, 07 Jan 2017 11:39:37 +0100
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To: emacs-orgmode@gnu.org

Hi,

Florian Lindner <mailinglists@xgm.de> writes:

> 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?

The documentation of `org-open-file' points to variable `org-file-apps'.
You can customize `org-file-apps'.

E.g. the entry

[INS] [DEL] Cons-cell:
            Choice: [Value Menu] Links to a directory
            Choice: [Value Menu] Command: firefox %s

stands for opening directories in firefox.


Ciao

                       Marco