* Missing simple way to call external process in Emacs?
@ 2023-03-11 13:02 Thomas Koch
2023-03-11 14:54 ` Michael Albinus
0 siblings, 1 reply; 2+ messages in thread
From: Thomas Koch @ 2023-03-11 13:02 UTC (permalink / raw)
To: emacs-devel@gnu.org
This is a sidenote from my previous email on continuations passing[1].
[1] https://lists.gnu.org/archive/html/emacs-devel/2023-03/msg00430.html
It seems to me, that shell-command is used a lot from elisp code also in Emacs core, although its docstring says:
"""In Elisp, you will often be better served by calling call-process or
start-process directly, since they offer more control and do not
impose the use of a shell (with its need to quote arguments)."""
Apparently, shell-command is the most convenient way in Emacs core to just run an external process and consume its output. However as https://debbugs.gnu.org/12145 shows it can quickly lead to problems.
Pfuture[2] might be a better alternative, however it is not on Elpa. I put the pfuture author in BCC.
[2] https://github.com/Alexander-Miller/pfuture
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Missing simple way to call external process in Emacs?
2023-03-11 13:02 Missing simple way to call external process in Emacs? Thomas Koch
@ 2023-03-11 14:54 ` Michael Albinus
0 siblings, 0 replies; 2+ messages in thread
From: Michael Albinus @ 2023-03-11 14:54 UTC (permalink / raw)
To: Thomas Koch; +Cc: emacs-devel@gnu.org
Thomas Koch <thomas@koch.ro> writes:
Hi Thomas,
> This is a sidenote from my previous email on continuations passing[1].
>
> [1] https://lists.gnu.org/archive/html/emacs-devel/2023-03/msg00430.html
>
> It seems to me, that shell-command is used a lot from elisp code also
> in Emacs core, although its docstring says:
>
> """In Elisp, you will often be better served by calling call-process or
> start-process directly, since they offer more control and do not
> impose the use of a shell (with its need to quote arguments)."""
>
> Apparently, shell-command is the most convenient way in Emacs core to
> just run an external process and consume its output. However as
> https://debbugs.gnu.org/12145 shows it can quickly lead to problems.
What about `process-lines'? It uses `call-process'.
Best regards, Michael.
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