Re: string parsing/preparation for latex

[David Pirotte <david@altosw.be>]

On Mon, 07 Nov 2005 13:49:01 -0200
"Jose Roberto B. de A. Monteiro" <betoes@sel.eesc.usp.br> wrote:

> Em Seg, 2005-11-07 às 14:53 +0100, David Pirotte escreveu:
> > does anyone understands why this does not return the expected result
> > 
> > 	(define *texu/reserved-characters*
> > 	  ;; % \ { } ~ $ & # ^ _
> > 	  '(
> > 	    #\%		;; comments
> > 	    #\\		;; command(follows by a space)
> > 	    #\{		;; definition of treatment block(main_arg)
> > 	    #\}		
> > 	    #\~		;; indivisible space
> > 	    #\$		;; mathematical mode 
> > 	    #\&		;; tabulation ...
> > 	    #\#		;; symbol of parameter zone
> > 	    #\^		;; exponent
> > 	    #\_		;; index
> > 	    )
> > 	  )
> > 
> > 	(define (texu/prep-str-for-tex str)
> > 	  (let ((str-lst (string->list str))
> > 		(result (list)))
> > 	    (for-each (lambda (chr)
> > 			(if (member chr *texu/reserved-characters*)
> > 			    (set! result (cons chr (cons #\\ result)))
> > 			    (set! result (cons chr result))))
> > 		      str-lst)
> > 	    (reverse-list->string result)
> > 	    ))
> 
> Because you should have this string: ";; % \\ { } ~ $ & # ^ _", with two
> backslashes instead of one... the same for "

but that is not possible, because the string (here simulated) is a user typed in string
 (through a gtk interface programmed in guile-gnome) upon which I have no control. 
I precisly wish to parse it to create a .tex file later processed by latex ...


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