mailing-list for TeXmacs Users

[Kostas Oikonomou <address@hidden>]

Henri,

I see in progs/convert/latex/latex-tools.scm a definition

(tm-define (latex-use-package-command doc)
  (:synopsis "Return the usepackage command for @doc")
  (set! latex-uses-table (make-ahash-table))
  (latex-use-which-package doc)
  (let* ((l1 (map car (ahash-table->list latex-uses-table)))
         (l2 (sort l1 latex-use-package-compare))
         (l3 (map force-string l2))
         (l4 (list-intersperse l3 ","))
         (s  (apply string-append l4)))
    (if (== s "") "" (string-append "\\usepackage{" s "}\n"))))

If I understand it correctly, this returns the \usepackage command (as a 
string) that TeXmacs inserts in the LaTeX document when it creates it. 
So that solves half of the problem.

Since I know almost no Scheme, how would I call this function 
"latex-use-package-command" from code inside my modified tmtex.scm?
If I knew that, I could figure out how to parse the \usepackage string 
and see if it contains "amsmath".

                        Kostas

Henri Lesourd wrote:

> First approach: look at the code, and find exactly the
>  variable (or the combination of variables) which prompts
>  inserting the amsmath package ;
>
> Second approach (probably easier): just before the output
>  of the exporter (which is an s-expression) is sent back
>  to the function which writes the actual LaTeX code, scan
>  this output, and (set-cdr!)-ize it to insert amsmath in
>  the list of included packages (if it's what you want) ;