GNU bug report logs - #44824
27.1; Org export as pdf and open file does not open it

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From: Maxim Nikulin <m.a.nikulin <at> gmail.com>
Cc: 44824 <at> debbugs.gnu.org
Subject: bug#44824: 27.1; Org export as pdf and open file does not open it
Date: Wed, 27 Jan 2021 19:14:21 +0700

On 27/01/2021 10:36, Lars Ingebrigtsen wrote:
> 
>> Executing the command "xdg-open /path/to/file.pdf" in a terminal
>> (Konsole) works.

The problem may be related to SIGHUP sent to children due to pty created 
by emacs and closed as soon as the handler exits:

https://orgmode.org/list/ru4d75$11sc$1 <at> ciao.gmane.io/

As a workaround you could try to set another handler for PDF files in 
mailcap, e.g. okular directly without xdg-open wrapper. Handler should 
not try to launch actual application in background with immediate exit.

Currently start-process elisp function is used internally in 
org-open-file. Low level (make-process :connection-type 'pipe ...) 
should allow to avoid pty+SIGHUP problem. Maybe there are some 
consequences of such change that I am not aware of.

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