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From: Eric Schulte <schulte.eric@gmail.com>
To: Alan Schmitt <alan.schmitt@polytechnique.org>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>
Subject: Re: Patch for asynchronous export of ocaml code
Date: Fri, 03 May 2013 09:57:48 -0600	[thread overview]
Message-ID: <87vc6wxeqw.fsf@gmail.com> (raw)
In-Reply-To: m2k3nh77cy.fsf@polytechnique.org

This looks great, please apply this patch.

Thanks,

Alan Schmitt <alan.schmitt@polytechnique.org> writes:

> Hello,
>
> It is not currently possible to asynchronously export the results of the
> evaluation an ocaml babel block because the evaluation needs to start a toplevel
> and thus asks the user what program to run. This of course blocks the
> asynchronous export.
>
> The attached patch adds a custom variable to specify the name of the command
> to run, and directly calls the tuareg function that starts the toplevel given
> the command.
>
> For some context, here is the code that starts the caml session.
>
> #+BEGIN_SRC emacs-lisp
> (defvar tuareg-interactive-buffer-name)
> (defun org-babel-prep-session:ocaml (session params)
>   "Prepare SESSION according to the header arguments in PARAMS."
>   (require 'tuareg)
>   (let ((tuareg-interactive-buffer-name (if (and (not (string= session "none"))
>                                                  (not (string= session "default"))
>                                                  (stringp session))
>                                             session
>                                           tuareg-interactive-buffer-name)))
>     (save-window-excursion
>       (if (fboundp 'tuareg-run-caml) (tuareg-run-caml) (tuareg-run-ocaml))
>       (get-buffer tuareg-interactive-buffer-name))))
> #+END_SRC
>
> And this is the code from tuareg that is run.
>
> #+BEGIN_SRC emacs-lisp
> ;;;###autoload
> (defun tuareg-run-ocaml ()
>   "Run an OCaml toplevel process. I/O via buffer `*ocaml-toplevel*'."
>   (interactive)
>   (tuareg-run-process-if-needed)
>   (display-buffer tuareg-interactive-buffer-name))
>
> (defun tuareg-run-process-if-needed (&optional cmd)
>   "Run an OCaml toplevel process if needed, with an optional command name.
> I/O via buffer `*ocaml-toplevel*'."
>   (if cmd
>       (setq tuareg-interactive-program cmd)
>     (unless (comint-check-proc tuareg-interactive-buffer-name)
>       (setq tuareg-interactive-program
>             (read-shell-command "OCaml toplevel to run: "
>                                 tuareg-interactive-program))))
>   (unless (comint-check-proc tuareg-interactive-buffer-name)
>     (let ((cmdlist (tuareg-args-to-list tuareg-interactive-program))
>           (process-connection-type nil))
>       (set-buffer (apply (function make-comint) "ocaml-toplevel"
>                          (car cmdlist) nil (cdr cmdlist)))
>       (tuareg-interactive-mode)
>       (sleep-for 1))))
> #+END_SRC
>
> With this patch (and setting `org-confirm-babel-evaluate' to nil), I'm able to
> export documents requiring the evaluation of caml code asynchronously.
>
> Alan
>
>

-- 
Eric Schulte
http://cs.unm.edu/~eschulte

next prev parent reply	other threads:[~2013-05-06 16:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-02 15:02 Patch for asynchronous export of ocaml code Alan Schmitt
2013-05-03 15:57 ` Eric Schulte [this message]
2013-05-07  7:57   ` Alan Schmitt
2013-05-07 12:18   ` Alan Schmitt
2013-05-07 12:52     ` Eric Schulte
2013-05-06  6:22 ` Alan Schmitt

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