Bug ? : org-babel and calc : calc-command-flags

Bug ? : org-babel and calc : calc-command-flags

[d.tchin]

Hello,

I tried to use calc with babel but it doesn't work as expected.

I use the following block with simple instruction :
#+begin_src calc 
2*3
#+end_src

I didn't get back any results.

I launch calc and it seems to be called as I have following output
--- Emacs Calculator Mode ---
1:  6
    .


So the instructions seems to be sent to calc. 

I have the following message error message :

executing Calc code block...
calc-push-list: Symbol's value as variable is void: calc-command-flags


I use :
GNU Emacs 22.3.1 (i386-mingw-nt5.1.2600) of 2008-09-06 on SOFT-MJASON
Org-mode version 7.4

Regards

d.tchin

Re: Bug ? : org-babel and calc : calc-command-flags

[Eric Schulte]

Hi d.tchin,

This problem is caused because (as you point out) the calc-command-flags
variable is not defined.  In my Emacs version calc-command-flags is
provided by (require 'calc) which is part of Babel's calc support, this
variable must be part of another package in your distribution.

As a work around you should find which calc package provides the
calc-command-flags variable and manually require that package, which
should resolve this problem.  More generally it may be useful to upgrade
from Emacs 22 if that is an option.

Best -- Eric

d.tchin <d.tchin@voila.fr> writes:

> Hello,
>
> I tried to use calc with babel but it doesn't work as expected.
>
> I use the following block with simple instruction :
> #+begin_src calc 
> 2*3
> #+end_src
>
> I didn't get back any results.
>
> I launch calc and it seems to be called as I have following output
> --- Emacs Calculator Mode ---
> 1:  6
>     .
>
>
> So the instructions seems to be sent to calc. 
>
> I have the following message error message :
>
> executing Calc code block...
> calc-push-list: Symbol's value as variable is void: calc-command-flags
>
>
> I use :
> GNU Emacs 22.3.1 (i386-mingw-nt5.1.2600) of 2008-09-06 on SOFT-MJASON
> Org-mode version 7.4
>
> Regards
>
> d.tchin
>
>
> _______________________________________________
> Emacs-orgmode mailing list
> Please use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode

Re: Bug ? : org-babel and calc : calc-command-flags

[d.tchin]

Eric Schulte <schulte.eric <at> gmail.com> writes:

> 
> Hi d.tchin,
> 

Hi Eric

> This problem is caused because (as you point out) the calc-command-flags
> variable is not defined.  In my Emacs version calc-command-flags is
> provided by (require 'calc) which is part of Babel's calc support, this
> variable must be part of another package in your distribution.
> 

Strange as I can load calc package in emacs. Indeed when I try to 
get information on this variable with C-h v, there is nothing.
I have a look on calc.el and I have the following lines (1428):

(defvar calc-aborted-prefix nil)
(defvar calc-start-time nil)
(defvar calc-command-flags)
(defvar calc-final-point-line)
(defvar calc-final-point-column)

Indeed, when I tried to use C-h v on the two first variable, it match.
But not for the following. The main difference is that the first two 
variable have the nil value and not the following.


> As a work around you should find which calc package provides the
> calc-command-flags variable and manually require that package, which
> should resolve this problem.  More generally it may be useful to upgrade
> from Emacs 22 if that is an option.
> 

I put a (require 'calc) in my .emacs. It is still not working.
I decide to put the following instruction in my .emacs :

(require 'calc) 
(defvar calc-command-flags nil)

Then it works ! 
It seems that there is problem of initialization of this variable.
Shouldn't this variable be initialized by default in calc ?

Thank you for your help.

d.tchin



> Best -- Eric
> 

Re: Re: Bug ? : org-babel and calc : calc-command-flags

[Eric Schulte]

d.tchin <d.tchin@voila.fr> writes:

> Eric Schulte <schulte.eric <at> gmail.com> writes:
>
>> 
>> Hi d.tchin,
>> 
>
> Hi Eric
>
>> This problem is caused because (as you point out) the calc-command-flags
>> variable is not defined.  In my Emacs version calc-command-flags is
>> provided by (require 'calc) which is part of Babel's calc support, this
>> variable must be part of another package in your distribution.
>> 
>
> Strange as I can load calc package in emacs. Indeed when I try to 
> get information on this variable with C-h v, there is nothing.
> I have a look on calc.el and I have the following lines (1428):
>
> (defvar calc-aborted-prefix nil)
> (defvar calc-start-time nil)
> (defvar calc-command-flags)
> (defvar calc-final-point-line)
> (defvar calc-final-point-column)
>
> Indeed, when I tried to use C-h v on the two first variable, it match.
> But not for the following. The main difference is that the first two 
> variable have the nil value and not the following.
>

the use of defvar without giving the variable a value is a trick to
appease the elisp compiler when a variable is used without being
required.  I imagine that the `calc-command-flags' variable is defined
in some other calc file, which the calc authors assumed would already be
loaded by the time calc is required.

>
>
>> As a work around you should find which calc package provides the
>> calc-command-flags variable and manually require that package, which
>> should resolve this problem.  More generally it may be useful to upgrade
>> from Emacs 22 if that is an option.
>> 
>
> I put a (require 'calc) in my .emacs. It is still not working.
> I decide to put the following instruction in my .emacs :
>
> (require 'calc) 
> (defvar calc-command-flags nil)
>
> Then it works ! 

That may be the simplest work-around for now, unless you can find the
calc file that actually does define that variable.

Best -- Eric

> 
> It seems that there is problem of initialization of this variable.
> Shouldn't this variable be initialized by default in calc ?
>
> Thank you for your help.
>
> d.tchin
>
>
>
>> Best -- Eric
>> 
>
>
>
> _______________________________________________
> Emacs-orgmode mailing list
> Please use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode

Re: Bug ? : org-babel and calc : calc-command-flags

[d.tchin]

Eventually I prefer to use the following instruction in the
buffer where I will use calc with babel.


#+begin_src emacs-lisp :results silent
  (require 'ob-calc)
  (defvar calc-command-flags nil)
#+end_src

Thank you for your help. 


d.tchin