Hi,

compiling example with quadriliterals and \startMPdefinitions{solvers}
\stopMPdefinitions from MetaFun manual, regardless of the code that is
commented out inside MPdefintions environment, gives:

! You can't use `\relax' after \the.

system          > tex > error on line 30 in file solvers.tex: You can't use
` ...

20     %  z1=0.5[z11,z13] ; z2=0.5[z21,z23] ;
21     %  z3=0.5[z31,z33] ; z4=0.5[z41,z43] ;
22     %  draw z1--z3 dashed evenly ; draw z2--z4 dashed evenly ;
23     %  z0=whatever[z1,z3]=whatever[z2,z4] ;
24     %  mark_rt_angle (z1,z0,z2);
25     %  if show_labels>0:
26     %  draw_problem_labels ;
27     %  fi;
28     %  endgroup ;
29     %  enddef ;
30 >>  \stopMPdefinitions
31
32     \starttext
33     %a
34     \stoptext

<recently read> \@MPF@::solvers

\dostartMPdefinitions ...er {\the \MPinstancetoks
                                                  #2}
l.30 \stopMPdefinitions

Is this a bug?

Vedran