From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Charles C. Berry" <ccberry@ucsd.edu>
Subject: Re: Bug: :session doesn't honor :verbatim [8.2.10 (release_8.2.10 @
 /usr/local/share/emacs/26.0.50/lisp/org/)]
Date: Sun, 16 Apr 2017 10:19:11 -0700
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References: <877f2kwxmv.fsf@detlef> <878tn0r53m.fsf@tils.net>
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To: Tilmann Singer <tils@tils.net>
Cc: emacs-orgmode@gnu.org, Michael Albinus <michael.albinus@gmx.de>

On Sun, 16 Apr 2017, Tilmann Singer wrote:

> Let me add that when not specifying ":results verbatim", the presence of
> the % sign in the output also triggers table formatting:
>
> #+BEGIN_SRC sh :session *session*
> echo "a%b"
> #+END_SRC
>
> #+RESULTS:
> |   |
> | b |
>

The extra line looks like a bug in babel. The session will show:

echo "a%b"
bash-3.2$ a%b

as the first two lines in the buffer.

--

Michael might get some relief by altering `shell-prompt-pattern' whose 
default value is

"^[^#$%>\n]*[#$%>] *"

is tricked by the embedded `%' in the output lines

If you know the prompt will not contain `%', you could delete that.

Changing the asterisk to a plus might work (untested) or maybe adding a 
blank in the first (negated) char class (also untested). Or if you know 
what the prompt will be literally, use that: "^My-prompt-[$] *"

[snip]

HTH,

Chuck