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Date: Sun, 26 Jun 2022 19:20:17 +0000
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To: Ihor Radchenko <yantar92@gmail.com>
From: Ivar Fredholm <freddyholms@protonmail.com>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>, "bzg@bzg.fr" <bzg@bzg.fr>
Subject: Re: We have asynchronous sessions, why have anything else?
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Hi, Ihor,
I believe the two could be unified if we expand the functionality of the as=
ync filter to look for 'exception' tags. Then each language implementation =
must only put the org-babel src block in a try-except type construction and=
 put the error message into the except block. The async filter will then fi=
nd the error information and report it back to the org-buffer. We could the=
n emulate the synchronous session functionality by adding a filter to the a=
sync-filter which blocks until an 'end' or 'exception' tag is detected. Thi=
s way, all four combinations of session/session-less and synchronous/asynch=
ronous header arguments could be handled by the asynchronous code alone.
Best, Guacho




Sent with Proton Mail secure email.

------- Original Message -------
On Saturday, June 25th, 2022 at 10:28 PM, Ihor Radchenko <yantar92@gmail.co=
m> wrote:


> Ivar Fredholm freddyholms@protonmail.com writes:
>
> > A session-less block can be executed by starting a session with a speci=
al name (say "*none") which always gets killed after block execution is com=
pleted. For interpreter-less languages, we could use the shell as an interp=
reter (for instance, if we wanted to execute C, we could just start a shell=
, and send it the gcc command to compile and execute). Would this not cut d=
own the amount of code that needs to be maintained and uniformize the exist=
ing code?
>
>
> Feel free to compare ob-eval.el and ob-comint.el. Their functionality is
> not equivalent. In particular ob-eval.el has a better handling of
> errors.
>
> If you find a way to unify the two without loosing the functionality, it
> will be welcome.
>
> Best,
> Ihor