The following: \starttext
\startMPinitializations input cmarrows; setup_cmarrows(arrow_name = "texarrow"; parameter_file = "cmr6.mf"; macro_name = "nicearrow"); \stopMPinitializations \startMPpage nicearrow (origin -- (1cm*left)); \stopMPpage \stoptext compiles perfectly with ConTeXt MkIV. With LMTX, however, the following happens: metapost > initializing instance 'metafun:1' using format 'metafun' and method 'default' metapost > loading 'metafun' as 'metafun.mpxl' using method 'default' metapost > initializing number mode 'scaled' metapost > message : Loading cmarrows 2006/12/18, v0.9 metafun > log > overloading immutable 'eps' metafun > log > metafun > log > error: Equation cannot be performed (numeric=pair) metafun > log > metapost > log > metapost > log > <to be read again> metapost > log > ; metapost > log > <for((6.58641,1.4944))> z_[incr.n]:=(EXPR0); metapost > log > ENDFOR metapost > log > <argument> ...nt(length(path))of(path),z2,point.ttt.of(path),z9-(0,3rule_thickness#),point.tt.of(path)-3rule_thickness#*(unitvector(direction.tt.of(path))rotated90):z_[incr.n]:=z;endfor metapost > log > ;transform.T... metapost > log > hide->exitif.numeric.begingroup(TEXT0) metapost > log > ;endgroup; metapost > log > mapto->begingroup.hide(numeric.n;n:=0;numeric.x,x_[],y,y_[];for.z=(TEXT2):z_[incr.n]:=z;endfor;transform.T;z_2=z_1transformed.T;z_4=z_3transformed.T;z_6=z_5transformed.T;) metapost > log > T.endgroup metapost > log > nicearrow__sgbxww->...(z0,point(length(EXPR2))of(EXPR2),z2,point.ttt.of(EXPR2),z9-(0,3rule_thickness#),point.tt.of(EXPR2)-3rule_thickness#*(unitvector(direction.tt.of(EXPR2))rotated90)) metapost > log > ;fi.save.f,s... metapost > log > <to be read again> metapost > log > ; metapost > log > <*> nicearrow (origin -- (1cm*left)); metafun > log > metafun > log > I'm sorry, but I don't know how to make such things equal. (See the two expressions just above the error message.) metafun > log > metapost > log > ; metapost > log > What's happening? Is that intended or a bug? Jairo
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