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From: Ihor Radchenko <yantar92@posteo.net>
To: Jack Kamm <jackkamm@tatersworld.org>
Cc: Matt <matt@excalamus.com>, emacs-orgmode <emacs-orgmode@gnu.org>
Subject: Re: [BUG] shell sessions started outside of Babel broken
Date: Wed, 22 Feb 2023 10:38:43 +0000	[thread overview]
Message-ID: <87pma2c7d8.fsf@localhost> (raw)
In-Reply-To: <87pma31tj7.fsf@gmail.com>

Jack Kamm <jackkamm@tatersworld.org> writes:

> Ihor Radchenko <yantar92@posteo.net> writes:
>
>> What is confusing is that `org-babel-execute-src-block' does not use
>> generic `org-babel-initiate-session'.
>
> I usually find myself confused whenever I am trying to remember
> where org-babel-LANG-initiate-session is run and what it's doing...

AFAIU, org-babel-LANG-initiate-session is ran the first time the session
is started. Its job is setting the comint to work with babel.

org-babel-LANG-prep-session is ran before a code block is executed
within a session. Its purpose is applying header args (like variable
bindings) and performing other immediate preparations to actually
execute the src block.

> In ob-shell's case, when I read the lisp code it seems like
> org-babel-prompt-command would get called every time
> org-babel-execute:shell runs (via org-babel-sh-initiate-session).

No. `org-babel-sh-initiate-session' has
   (or (org-babel-comint-buffer-livep session)
       ...)

So, it does nothing when the session buffer is already present.

> But that's not how the behavior seems when I use it, e.g. if using a
> M-x shell session, the prompt isn't changed after executing a src
> block.

Because `org-babel-comint-buffer-livep' will return t for a buffer
created by M-x shell. It may or may not be a bug.

We can, for example, make `org-babel-comint-buffer-livep' return nil
unless a special buffer-local indicator is set upon evaluating
`org-babel-sh-initiate-session'.

However, it may be tricky in general case because what we have to do
when creating a new session buffer may or may not be the same with what
we have to do when M-x shell buffer exists already.

>> We may, however, allow an extra header arg to set the prompt regexp
>> manually. Would it make sense?
>
> It does feel a little confusing, but I don't have any better ideas at
> the moment.
>
> To clarify -- would the header arg be for setting
> comint-prompt-regexp, org-babel-prompt-command, both, or something
> else?

I imagine that the header arg will be setting comint-prompt-regexp.

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>


  reply	other threads:[~2023-02-22 10:39 UTC|newest]

Thread overview: 72+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-06 19:39 [PATCH] Async evaluation in ob-shell Matt
2023-02-07 11:40 ` Ihor Radchenko
2023-02-09  4:33   ` Matt
2023-02-09 11:24     ` Ihor Radchenko
2023-02-10 22:19       ` Matt
2023-02-11 11:44         ` Ihor Radchenko
2023-02-12 19:32           ` Matt
2023-02-15 15:08             ` Ihor Radchenko
2023-02-16  4:02               ` Matt
2023-02-17 10:44                 ` Ihor Radchenko
2023-02-19 23:14                   ` Matt
2023-02-20 11:24                     ` Ihor Radchenko
2023-02-20 17:24                       ` Matt
2023-02-22 10:30                         ` Ihor Radchenko
2023-03-02  1:36                           ` Matt
2023-03-03 14:52                             ` Ihor Radchenko
2023-03-03 17:53                               ` Matt
2023-03-05 12:15                                 ` Ihor Radchenko
2023-03-06  6:45                                   ` Matt
2023-03-07 12:45                                     ` Ihor Radchenko
2023-03-09 17:36                                       ` Matt
2023-03-10  1:52                                         ` Max Nikulin
2023-03-12 16:28                                         ` Jack Kamm
2023-03-18 10:48                                         ` Ihor Radchenko
2023-03-21 20:29                                           ` Matt
2023-03-22 12:12                                             ` Ihor Radchenko
2023-03-23 11:50                                             ` Ihor Radchenko
2023-03-23 19:35                                               ` Matt
2023-03-24  9:13                                                 ` Ihor Radchenko
2023-03-28  2:53                                                   ` Matt
2023-03-28 10:06                                                     ` Ihor Radchenko
2023-04-17 15:31                                                   ` Matt
2023-04-17 18:55                                                     ` Ihor Radchenko
2023-04-17 18:56                                                       ` Matt
2023-04-17 19:05                                                         ` Ihor Radchenko
2023-03-23  3:25       ` [SUGGESTION] ob-shell async result output should not contains shell prompt Christopher M. Miles
2023-03-23  4:21         ` Matt
2023-03-23 11:12           ` Christopher M. Miles
2023-03-23 16:23             ` Matt
2023-03-24 11:20               ` Ihor Radchenko
2023-03-23 16:26             ` Remove "shell" as a supported Babel language within ob-shell.el (was Re: [SUGGESTION] ob-shell async result output should not contains shell prompt) Matt
2023-03-24  1:53               ` Remove "shell" as a supported Babel language within ob-shell.el Christopher M. Miles
2023-03-24 11:38               ` Remove "shell" as a supported Babel language within ob-shell.el (was Re: [SUGGESTION] ob-shell async result output should not contains shell prompt) Ihor Radchenko
2023-03-25  5:47                 ` Samuel Wales
2023-03-25 18:07                   ` Ihor Radchenko
2023-03-28  2:33                 ` Matt
2023-02-11 20:56 ` [PATCH] Async evaluation in ob-shell jackkamm
2023-02-12 19:02   ` Matt
2023-02-13  3:16     ` Jack Kamm
2023-02-13 17:07       ` [BUG] shell sessions started outside of Babel broken Matt
2023-02-15  6:19         ` Jack Kamm
2023-02-16 12:53           ` Ihor Radchenko
2023-02-19 15:04             ` Jack Kamm
2023-02-20 11:22               ` Ihor Radchenko
2023-02-21  5:23                 ` Jack Kamm
2023-02-22 10:38                   ` Ihor Radchenko [this message]
2023-03-25 16:55               ` Jack Kamm
2023-03-25 16:59                 ` [PATCH] Fix externally started sessions with ob-python Jack Kamm
2023-02-13 20:11       ` [BUG] conda doesn't work in ob-shell sessions Matt
2023-02-15  6:21         ` Jack Kamm
2024-01-18 11:55           ` Ihor Radchenko
2024-01-21 22:48             ` Jack Kamm
2024-01-22  3:42               ` Jack Kamm
2024-01-22 11:59                 ` Ihor Radchenko
2024-01-23  6:09                   ` Jack Kamm
2024-01-24 15:22                     ` Ihor Radchenko
2024-01-25 19:14                       ` Matt
2024-01-25 20:36                         ` Ihor Radchenko
2024-01-26  0:42                       ` Jack Kamm
2024-01-27 10:25                         ` Matt
2024-02-09 16:37                           ` Ihor Radchenko
2024-01-23 18:51               ` Suhail Singh

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