3

I use emacs 24.4.1 on ubuntu 15.04. Somehow xdg-open doesnot work if i run it from emacs. For example, if i run "xdg-open 1.pdf" or "gvfs-open 1.pdf" in eshell they do not work. At the same time, "evince 1.pdf" works perfectly.

3

The previous two answers didn't work for me:

  • (setq process-connection-type nil) broke org-plot/gnuplot
  • setsid xdg-open ... worked for a while, but then it stopped for some reason.

Now I use setsid -w, which supposedly makes setsid wait until the called program finishes.

If someone would need it, I use this with AUCTeX (and I found this question while trying to fix AUCTeX behavior on Arch linux), and my TeX-command-list is set to

(quote
 ( 
  ;; ...
  ("View" "setsid -w xdg-open %s.pdf" TeX-run-command t t :help "Run Text viewer")
  ;; ...
  )

It seems to work fine for now...

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3

Using setsid xdg-open 1.pdf works for me. The problem seems to be that gvfs-open and xdg-open return before their children are done working. Emacs might kill their controlling terminal when this happens, killing the children, and stopping evince from opening properly. setsid sets a new controlling terminal that emacs won't close.

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  • To make it work I had to include -w (wait): setsid -w xdg-open 1.pdf – Francesquini Mar 10 '19 at 21:34
1

This may be a problem with using ptys for subprocess communication. Try setting process-connection-type to nil to use pipes instead.

In your .emacs

;; Use pipes for subprocess communication
(setq process-connection-type nil)

I use the publishing functions from org mode and without this change, none of the generated files get opened via xdg-open, despite no error messages.

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  • Thanks, it worked! Is there some documentation containing some explanation for this? – Emil Vatai Jan 11 '17 at 10:27
  • This method does work, but might cause problems for other applications (for me it ruined calling gnuplot from org-mode), so it's not an optimal solution! I have Michael Hoffmans solution in my .emacs now (for the view command in Auctex). We'll see how it works. – Emil Vatai Feb 16 '17 at 5:28
  • To reproduce the error mentioned above: try running org-plot/gnuplot with the cursor/point on a table with and without process-connection-type set to nil, for more details see first subsection of this page. – Emil Vatai Feb 16 '17 at 6:43
0

xdg-open work in sync mode: (shell-command "xdg-open .") , but not in async mode: (async-shell-command "xdg-open .") .

it seem like xdg-open spawn child process to open file then exit. before child process open file, xdg-open exit, so shell exit, too. shell exit kill all child process.

so just make shell life little more: (async-shell-command "xdg-open . ; sleep 1") (async-shell-command will append & after sleep 1 ; anyway, shell will still wait background process & finish.)

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