From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tyler Smith <tyler@plantarum.ca>
Subject: Re: org alters output of bash code blocks when run with :session
Date: Tue, 13 Mar 2018 13:24:50 -0400
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To: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Cc: Emacs Org-Mode Help <emacs-orgmode@gnu.org>

On Mon, Feb 26, 2018, at 6:27 AM, Nicolas Goaziou wrote:
> Tyler Smith <tyler@plantarum.ca> writes:
> >
> > How do I force the babel session to leave the output alone, and print
> > it verbatim into the org file?
> 
> It may be related to other problems related to prompt in shell sessions.
> See for example
> <http://lists.gnu.org/r/emacs-orgmode/2018-02/msg00081.html>,
> <http://lists.gnu.org/r/emacs-orgmode/2018-01/msg00415.html>, and for
> step forward a solution
> <http://lists.gnu.org/archive/html/emacs-orgmode/2017-04/msg00147.html>.
> 
> Patches welcome!

It looks like ob-shell sets up sessions just by calling `shell`, which means all the user's customizations for shell-mode are automatically applied. This includes setting the prompt (e.g., from .emacs.d/init_bash.sh), as well as the value of `comint-prompt-regexp`.

I can't see any straightforward way to modify ob-shell sessions without also changing regular shell-mode. So I wonder if the easiest way to address this would be to create a new mode derived from shell-mode, ('ob-shell-mode')? That would give us a way to modify the prompt code inside babel without interfering with shell-mode.

If that sounds sensible I can put together a patch for ob-shell.el. Let me know what you think.

Best,

Tyler