Hi Taco,
Thank you for your help. I specify that this extension works perfectly by
compiling the following file.

input mp-scratch;

Scratchversion:=3;

beginfig(1);
  draw Drapeau;
  draw Repeter("4");
  draw Avancer("100");
  draw Tournerd("90");
  draw FinBlocRepeter;
  endfig;
end


But what you are proposing unfortunately does not work.
Fabrice

Le mar. 1 sept. 2020 à 14:25, Taco Hoekwater <taco@elvenkind.com> a écrit :

> Hi,
>
> I think you need this:
>
> \startMPinclusions
>   input mp-scratch;
> \stopMPinclusions
>
> \startMPcode
>   Scratchversion:=3;
>   ….
>
> If that also doesn’t work, perhaps attach the log file / terminal output
> to a new message.
>
> Best wishes,
> Taco
>
> > On 1 Sep 2020, at 13:07, Fabrice Couvreur <fabrice1.couvreur@gmail.com>
> wrote:
> >
> > Hello
> > Is it possible to import a metapost extension into a file compiled with
> the lmtx engine ?
> > I tried unsuccessfully with this example :
> >
> > %%%% begin test.tex
> >
> > \starttext
> > \startMPcode
> >   input mp-scratch;
> >
> >     Scratchversion:=3;
> >
> > draw Drapeau;
> > draw Repeter("4");
> > draw Avancer("50");
> > draw Tournerd("90");
> > draw FinBlocRepeter;
> >
> > \stopMPcode
> > \stoptext
> >
> > %%%% end test.tex
> >
> > Thanks
> > Fabrice
> >
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> ___________________________________________________________________________________
>
> Taco Hoekwater
> Elvenkind BV
>
>
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
>
> ___________________________________________________________________________________
>