Is the sarith package usable in MKIV? For example, I would like to
get the numerical (not string) values of auto.x and auto.y from the
graph package. I expect the following example to work, but it does
not (even if I "input sarith") with MPinclusions.
\usemodule[graph]
\ctxlua{metapost.showlog=true}
\startMPpage
draw begingraph(1in,1in);
setrange((0,0),(1,1));
for n=auto.x:
show Scvnum n; % This is the line that is failing
endfor;
endgraph;
\stopMPpage
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