On 22/05/2022 11:37, Ihor Radchenko wrote:
I have a problem with the following commits:
869b7a21b org-open-file: Avoid make-process for Emacs 24 compatibility
5db61eb0f org.el: Avoid xdg-open silent failure
They both set process-connection-type to nil/'pipe. Somehow, this change
breaks org-open-file for me when org-open-file calls xdg-open and xdg is
confugured to open the file with emacsclient. I only see a flicker and
the file does not open. Sometimes, Emacs even crashes.
I can not reproduce a problem, however I tried to factor-out xdg-open.
Emacs-27.1, a minimal LXC container, so "&" to simulate kde-open5
starting process in background. On the other hand I consider behavior
when emacsclient is called from emacs as confusing due to requirement of
C-x # to notify emacs about completion.
---- >8 ----
#+begin_src elisp
(push '("\\.txt\\'" . "emacsclient %s &") org-file-apps)
#+end_src
[[file:some.txt]]
---- 8< ----
Nothing happens if emacs server is not started, but error handling was
sacrificed for compatibility with old emacs versions.
Do you see the same problem for a function from mailcap.el in the
development emacs version?
Eli Zaretskii suspected some compatibility issue, but he successfully
resisted my attempts to pull some details from him. I know how to create
a MIME handler that will cause 100% CPU consumption by Emacs for pipe
processes, but he does not consider it as a real problem.
If I change the process type back to default tty value, things work
again as expected.
You might try `call-process' with 0 as DESTINATION (attention! not nil!).
See #+begin_comment snippet from the following patch (this part was not
committed since Robert convinced me that it is confusing):
Max Nikulin to emacs-orgmode. [PATCH v3] Fix FAQ entry about mailto
links. Mon, 14 Feb 2022 20:22:14 +0700.
https://list.orgmode.org/9437ade2-af18-f97e-8790-a2df27c90...@gmail.com
I do not know a way to reliably launch external MIME handler from Emacs.
All means I am aware of have some caveats.
