Am 09.10.2011 22:01, schrieb Meer, H. van der:
I have this question on the implementation of metapost.
The following program ends in an error:
\startMPpage
picture v;
draw origin--(1cm,1cm);
v = currentpicture;
clearit;
draw (1cm,0)--(0,1cm);
currentpicture := currentpicture + v;
use
addto currentpicture also v;
\stopMPpage
The error is: ! Not implemented: (picture)+(picture).
Yet Knuth's metafont book in Chapter 13 tells me, quote: Pictures can be
added or subtracted;
Is the current metafont implementation lacking this feature? Will it be
implemented in the near future?
Just another notation, that's all.
Best wishes, Peter
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