Re: [babel] session initialization (was RE: python/babel inline images)

["Mikhail Titov" <mlt@gmx.us>]

> -----Original Message-----
> From: emacs-orgmode-bounces+mlt=gmx.us@gnu.org [mailto:emacs-orgmode-
> bounces+mlt=gmx.us@gnu.org] On Behalf Of Eric Schulte
> Sent: Wednesday, June 06, 2012 2:02 PM
> To: Mikhail Titov
> Cc: emacs-orgmode@gnu.org; 'henry atting'; 'Eric Schulte'
> Subject: Re: [O] [babel] session initialization (was RE: python/babel
inline
> images)
> 
> > Right now I have something like the following in that function
> >
> > 	  (comint-send-string
> > 	   (get-buffer-process (current-buffer))
> > 	  		       "set(0, 'defaultfigurevisible', 'off');\n")
> >
> > I do it there as it does not make sense to call for each block. I was
about
> > to write that ob-R does show stuff but I believe it was in earlier
versions
> > of ob-R.el or something as I've checked and indeed nothing appears on
screen
> > as code being wrapped in a device output block.
> >
> 
> I'm not aware of a way to run code on the start of a session.  I do see
> how this could be a useful addition.

So the fragment above does look legitimate to you? I just add

(format "cd('%s');\n" (file-name-directory (buffer-file-name)))

and problem solved? Well... for sessions. I don't know if it is common to
use non-session based calculations...

> > Also IIRC ob-sh does not change directory though I tried it on Windows
with
> > cmd.exe.
> 
> Granted I only run on linux, but (on linux) ob-sh *does* run in the
> directory of the containing Org-mode file.
> 
> > Worth mentioning that it tangles into dot sh instead of dot bat or dot
> > cmd on that platform. It misses platform specific
> >
> > (defvar org-babel-tangle-lang-exts)
> > (if (string-equal system-type "windows-nt")
> >   (add-to-list 'org-babel-tangle-lang-exts '("sh" . "bat"))
> > )
> >
> 
> OK, could you convert the above into a patch which we could apply to
> ob-sh?

I think there should be more than that. I do sometimes use bash from msys on
Win32 so I'd expect sh as a tangled file name extension in this case. I
believe it can be accomplished as with matlab / octave by adding a new
language cmd that will reuse most of sh. I'll see what I can do.

M.