Re: Re: Updating CONSTANTS in LaTeX mode

[Carsten Dominik <carsten.dominik@gmail.com>]

Hi Seweryn,

nice patch, thanks, I have included it with very minor modifications
(mainly anchoring the match to the left margin with spaces).

Thanks!

- Carsten

On Dec 11, 2010, at 11:06 PM, Seweryn wrote:

> Carsten Dominik <carsten.dominik <at> gmail.com> writes:
>
>>
>>
>> On Dec 11, 2010, at 6:03 PM, Carsten Dominik wrote:
>>
>>>
>>> On Dec 11, 2010, at 4:05 PM, Seweryn wrote:
>>>
>>>> Hello,
>>>>
>>>> Is it possible to have locally defined CONSTANTS in .tex buffer?
>>>> What is the
>>>> command to update the list of known CONSTANTS since $pi works but I
>>>> cannot
>>>> insert $x to the list of CONSTANTS. See example below
>>>>
>>>> \begin{comment}
>>>> #+CONSTANTS: x=458.0
>>>> #+ORGTBL: SEND test1 orgtbl-to-latex :splice t :lend ""
>>>> | 3.1415927 | #ERROR |
>>>> #+TBLFM: @1$1=$pi::@1$2=$x
>>>> % $
>>>> \end{comment}
>>>>
>>>> I would appreciate a hint.
>>>
>>> This works for me.  Put you must do `C-c C-c' in the CONSTANTS line
>>> to make changes known to Org-mode.  Or kill the buffer and revisit
>>> the file,
>>> that will also make CONSTANTS known.
>>>
>>
>> I am sorry, I did not read this carefully.  No, this is currently
>> not possible in tex and other non-org-mode files.
>>
>
> For sure, there is a better way to implement it, but for now I  
> modified orgtbl-
> ctrl-c-ctrl-c function to update org-table-formula-constants-local.  
> This
> variable is updated when hitting C-c C-c when being on #+TBLFM line.
>
> (defun orgtbl-ctrl-c-ctrl-c (arg)
>  "If the cursor is inside a table, realign the table.
> If it is a table to be sent away to a receiver, do it.
> With prefix arg, also recompute table."
>  (interactive "P")
>  (let ((pos (point)) action consts-str consts cst)
>    (save-excursion
>      (beginning-of-line 1)
>      (setq action (cond ((looking-at "[ \t]*#\\+ORGTBL:.*\n[ \t]*|")  
> (match-
> end 0))
> 			 ((looking-at "[ \t]*|") pos)
> 			 ((looking-at "[ \t]*#\\+TBLFM:") 'recalc))))
>    (cond
>     ((integerp action)
>      (goto-char action)
>      (org-table-maybe-eval-formula)
>      (if arg
> 	  (call-interactively 'org-table-recalculate)
> 	(org-table-maybe-recalculate-line))
>      (call-interactively 'org-table-align)
>      (when (orgtbl-send-table 'maybe)
> 	(run-hooks 'orgtbl-after-send-table-hook)))
>     ((eq action 'recalc)
> 	  (save-excursion
> 	(goto-char (point-min))
> 	(while (re-search-forward "#\\+CONSTANTS: \\(.*\\)" nil t)
> 	  (setq const-str (substring-no-properties (match-string 1)))
> 	  (setq consts (append consts (org-split-string const-str "[ \t]+")))
> 	  (when consts
> 		(let (e)
> 		  (while (setq e (pop consts))
> 		(if (string-match "^\\([a-zA-Z0][_a-zA-Z0-9]*\\)=\\(.*\\)" e)
> 	(push (cons (match-string 1 e) (match-string 2 e)) cst)))
> 			  (setq org-table-formula-constants-local cst)))))
>      (save-excursion
> 	(beginning-of-line 1)
> 	(skip-chars-backward " \r\n\t")
> 	(if (org-at-table-p)
> 	    (org-call-with-arg 'org-table-recalculate t))))
>     (t (let (orgtbl-mode)
> 	  (call-interactively (key-binding "\C-c\C-c")))))))
>
> Cheers,
> Seweryn
>
>
>
>
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