From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bastien <bzg@gnu.org>
Subject: bug#14605: Problem with export an .org file to .pdf does not open
 pdf file
Date: Sat, 17 Aug 2013 14:31:45 +0200
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To: Petr Hracek <phracek@redhat.com>
Cc: 14605-done@debbugs.gnu.org

Hi Petr,

Petr Hracek <phracek@redhat.com> writes:

> "External applications for opening `file:path' items in a document.
> Org-mode uses system defaults for different file types, but
> you can use this variable to set the application for a given file
> extension.  The entries in this list are cons cells where the car identifies
> files and the cdr the corresponding command.  Possible values for the
> file identifier are
>  \"string\"    A string as a file identifier can be interpreted in
> different
>                ways, depending on its contents:
>
>                - Alphanumeric characters only:
>                  Match links with this file extension.
>                  Example: (\"pdf\" . \"evince %s\")
>                           to open PDFs with evince.
>
> What does it mean system defaults?

It means mailcap.  Org relies on mailcap.el behind the scene.

> What command is used for getting default programs?
> xdg-mine or another?

Nope, mailcap.

> Thank you in advance

Best,

-- 
 Bastien