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Re: [Orgmode] Re: Updating CONSTANTS in LaTeX mode


From: Carsten Dominik
Subject: Re: [Orgmode] Re: Updating CONSTANTS in LaTeX mode
Date: Sun, 12 Dec 2010 13:26:10 +0100

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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