[NTG-context] troubles with \MPinclusions

21 Feb 2019

      Hi,

Why does (1) compile, whereas (2) doesn't?
I can't understand why can MPinclusions store path and not pairs.  

%%%%%%%%%%%% (1) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\setuppapersize[A4,landscape]

\startMPinclusions
u:=1mm ;
%fond
path p ;
p:= (0,0) -- (150u,0) -- (150u,95u) -- (0,95u) -- cycle ;
pair x[] ;
x[0]:= (20u,90u) ;
x[1]:= (40u,90u) ;
x[2]:= (90u,90u) ;
x[3]:= (140u,90u) ;
\stopMPinclusions

\startreusableMPgraphic{test}
draw p ;
\stopreusableMPgraphic

\starttext 
    \reuseMPgraphic{test}
\stoptext

%%%%%%%%%%%% (1) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\setuppapersize[A4,landscape]

\startMPinclusions
u:=1mm ;
%fond
path p ;
p:= (0,0) -- (150u,0) -- (150u,95u) -- (0,95u) -- cycle ;
pair x[] ;
x[0]:= (20u,90u) ;
x[1]:= (40u,90u) ;
x[2]:= (90u,90u) ;
x[3]:= (140u,90u) ;
\stopMPinclusions

\startreusableMPgraphic{test}
draw p ;
for i=0 step 1 until 3 :
    drawdot x[i] ;
endfor ;
\stopreusableMPgraphic

\starttext 
    \reuseMPgraphic{test}

More generaly, which kind of variables cannot be stored in
\startMPinclusions ?

Thanks,

Damien Thiriet