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Re: Creating tables, math and drawings from scheme session


Chronological Thread 
  • From: Giovanni Piredda <address@hidden>
  • To: address@hidden
  • Subject: Re: Creating tables, math and drawings from scheme session
  • Date: Thu, 5 Nov 2020 21:03:02 +0100
I figured out something else:

<extern|(lambda (x) `(concat "Hallo " ,x))|Piet>

(got from https://www.iam.uni-bonn.de/fileadmin/user_upload/gubinelli/texmacs/talk-texmacs-guile-strasbourg-june-2019.pdf) works, while

<extern|(lambda (x) (insert x))|Piet>

crashes TeXmacs 1.99.14 on Linux Ubuntu with the error on terminal

double free or corruption (out)

Still the extern procedure might be the way to insert code in the document, but I am not able to make it work (maybe one of the developers can say something?).

G.

On 05.11.20 20:28, Giovanni Piredda wrote:
I never tried with the insert procedure; I did it through a helper macro, calling the Scheme one through the extern primitive. That worked (for tables and for graphics), but - I am guessing - it does not do what you want, that is having the code inserted in the source code of the document (I do not know if I am guessing correctly!); instead, it inserts the typeset output (text or table or graphics) in the document.

Despite this, I have an idea, which I have not been able to get to immediately work but maybe is good, I explain myself with a not-yet-working code

<assign|insertHere|<\macro|x>
    <extern|(lambda (x) '(insert ,x))|<arg|x>>

Then use as <insertHere|arg> at the insertion point. In my test it seems to me that TeXmacs does not recognize the argument x of the macro as argument to the Scheme function--but I do not know how to fix that.

G.

On 05.11.20 19:38, Михаил Бахтерев wrote:
Greetings!

First of all i would like to thank TeXMacs developers heartily
for the great software.

My question is following.

I would like to generate interactively (in notepad manner) some
math, tables and drawings during some not such a big data
analysis. I've managed to generate expression trees and
drawings, for instance, like this

   (define (frac x)
     (insert `(with "mode" "math" (frac "a" ,x))))

But i cannot put this structure into the document correctly. As
far, as i understand, insert procedure inserts an object at the
cursor position. But the cursor position is right at the next
Scheme] prompt. So the formulae or the drawing are putted, where
next expression should be entered, not at the document itself,
or at the usual position for the result of expression
evaluation.

   Scheme] 1
     1 ; i mean here

Could this behaviour be changed somehow? Is there any way to
place generated construction at the result position (which would
be ideal) or at the document somewhere?

- Michael Bakhterev, respectfully

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